initial project code commit

2026-04-22 13:15:55 +03:00
parent e624299842
commit 9dcc2f9473
69 changed files with 7387 additions and 0 deletions
--- a/artproducts/src/.DS_Store
+++ b/artproducts/src/.DS_Store
--- a/artproducts/src/artproducts/.DS_Store
+++ b/artproducts/src/artproducts/.DS_Store
--- a/artproducts/src/artproducts/enspectrum.py
+++ b/artproducts/src/artproducts/enspectrum.py
@@ -0,0 +1,284 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+import os
+
+import numpy as np
+
+from regions import Regions
+from astropy.io import fits
+
+from arttools.telescope import Teldef
+
+from artproducts.version import __version__
+
+
+class EnergySpectrum(object):
+
+    def __init__(self, events, make_individual=False):
+        self._events = events
+        self._start  = events.tstart
+        self._stop   = events.tstop
+
+        self._phadata  = {}
+        self._phameta  = {}
+
+        self._make_individual = make_individual
+
+    def create(self, region):
+
+        all_phadata = {
+            'pha'  : [], 
+            'bins' : [], 
+            'edges': [],
+            'gti'  : []
+        }
+
+        self._phameta['all'] = {
+            'exposure': 0.0,
+            'deadtime': 0.0,
+            'livetime': 0.0,
+            'events'  : 0,
+            'selected': 0,
+            'filter'  : None
+        }
+
+        for telname, evtdata in self._events:
+            phadata, phameta = self._make_pha(evtdata, region)
+
+            self._phadata[telname] = phadata
+            self._phameta[telname] = phameta
+
+            for key in ['pha', 'bins', 'edges', 'gti']:
+                all_phadata[key].append(phadata[key])
+
+            for key in ['exposure', 'deadtime', 'livetime', 'events', 'selected']:
+                self._phameta['all'][key] += phameta[key]
+
+            self._phameta['all']['projection'] = phameta['projection']
+            self._phameta['all']['filter'    ] = phameta['filter'    ]
+
+        all_bins  = all_phadata['bins' ][0]
+        all_edges = all_phadata['edges'][0]
+        all_pha   = np.sum(all_phadata['pha'], axis=0)
+        all_gti   = np.prod(all_phadata['gti'])
+
+        self._phadata['all'] = {
+            'pha'  : all_pha  ,
+            'bins' : all_bins ,
+            'edges': all_edges,
+            'gti'  : all_gti
+        }
+
+    def _make_pha(self, evtdata, region):
+        data       = evtdata['events'    ]
+        projection = evtdata['projection']
+
+        gti        = data.gti
+        exp, deadt, livet \
+                   = self._make_timekeys(data, gti)
+        mask, filter_expr \
+                   = self._make_mask(data, region, projection)
+
+        times      = np.array(data.events.column('TIME'))
+
+        bins       = np.linspace(0.1, 65., 650)
+        pha, edges = np.histogram(times[mask], bins=bins)
+
+        phadata    = {
+            'pha'  : pha  , 
+            'bins' : bins , 
+            'edges': edges,
+            'gti'  : gti
+        }
+
+        phameta    = {
+            'projection': projection,
+            'exposure'  : exp  ,
+            'deadtime'  : deadt,
+            'livetime'  : livet,
+            'events'    : len(times),
+            'selected'  : len(times[mask]),
+            'filter'    : filter_expr
+        }
+
+        return phadata, phameta
+
+    def _make_timekeys(self, evtdata, gti):
+        exposure = gti.exposure
+
+        deadtime = 0
+        for gtistart, gtistop in gti.array:
+            deadtime += evtdata.deadtime(gtistart, gtistop)
+
+        livetime = exposure - deadtime
+
+        return exposure, deadtime, livetime
+
+    def _make_goodevt_mask(self, evtdata, grade=9, flag=0):
+        maskexpr = '(GRADE < {grade}) && (FLAG == {flag})'
+        maskexpr = maskexpr.format(grade=grade, flag=flag)
+
+        grademask = evtdata.events.column('GRADE') <  grade
+        flagmask  = evtdata.events.column('FLAG' ) == flag
+
+        return np.all([grademask, flagmask], axis=0), maskexpr
+
+    def _make_mask(self, evtdata, region, projection):
+        goodmask, goodexpr \
+            = self._make_goodevt_mask(evtdata)
+        
+        regionmask = region.mask(projection,
+            np.array(evtdata.events.column('RA' )),
+            np.array(evtdata.events.column('DEC')))
+
+        expr = '{}'.format(goodexpr)
+
+        return np.all([goodmask, regionmask], axis=0), expr
+
+    def _write_pha(self, name, dstfname, arffile=None, rmffile=None, backfile=None, backscale=None):
+        if not name in self._phadata:
+            return False
+
+        mjdref = 51543.875
+
+        phadata = self._phadata[name]
+        phameta = self._phameta[name]
+
+        hdu = fits.PrimaryHDU()
+
+        a1 = np.arange(649)
+        a2 = np.array(phadata['pha'])
+        a3 = np.zeros(a1.size)
+        a4 = np.ones (a1.size)
+
+        c1 = fits.Column(name='CHANNEL' , format='1J', unit=''     , array=a1)
+        c2 = fits.Column(name='COUNTS'  , format='1J', unit='count', array=a2)
+        c3 = fits.Column(name='QUALITY' , format='1I', unit=''     , array=a3)
+        c4 = fits.Column(name='GROUPING', format='1I', unit=''     , array=a4)
+
+        cols = fits.ColDefs([c1, c2, c3, c4])
+
+        hdu1 = fits.BinTableHDU.from_columns(cols)
+        hdu1.name = 'SPECTRUM'
+        hdu1.header['MISSION' ] = 'SRG'
+        hdu1.header['TELESCOP'] = 'ART-XC'
+        hdu1.header['INSTRUME'] = name
+        hdu1.header['EXPOSURE'] = phameta['exposure'] - phameta['deadtime']
+
+        hdu1.header['AREASCAL'] = 1.
+
+        if backfile is not None:
+            hdu1.header['BACKFILE'] = backfile
+        
+        if backscale is not None:
+            hdu1.header['BACKSCAL'] = backscale
+        else:
+            hdu1.header['BACKSCAL'] = 1.
+
+        hdu1.header['CORRFILE'] = '' 
+        hdu1.header['CORRSCAL'] = -1
+
+        if arffile is not None:
+            hdu1.header['ANCRFILE'] = arffile
+
+        if rmffile is not None:
+            hdu1.header['RESPFILE'] = rmffile
+
+        hdu1.header['HDUCLASS'] = 'OGIP'
+        hdu1.header['HDUCLAS1'] = 'SPECTRUM'
+        hdu1.header['HDUVERS' ] = '1.2.1'
+
+        hdu1.header['POISSERR'] = True
+
+        hdu1.header['CHANTYPE'] = 'PI'
+        hdu1.header['DETCHANS'] = 649
+        hdu1.header['TLMIN1'  ] = 0
+        hdu1.header['TLMAX1'  ] = 648
+
+        hdu2 = phadata['gti'].make_hdu(mjdref)
+
+        hdulist = fits.HDUList([hdu, hdu1, hdu2])
+        hdulist.writeto(dstfname, overwrite=True, checksum=True)
+
+        return True
+
+    def write(self, dstfname, respfiles=None, backfiles=None, backscale=None):
+        written = {
+            'files': []
+        }
+
+        allfname = dstfname.format('_all')
+        backname = None
+        if backfiles is not None:
+            if 'all' in backfiles:
+                backname = backfiles['all']
+
+        arffile = None
+        rmffile = None
+
+        if respfiles is not None:
+            if 'all' in respfiles['arf']:
+                arffile = respfiles['arf']['all']
+
+            if 'all' in respfiles['rmf']:
+                rmffile = respfiles['rmf']['all']
+
+        # def _write_pha(self, name, dstfname, arffile=None, respfile=None, backfile=None, backscale=None):
+
+        if self._write_pha(
+                'all',
+                allfname,
+                arffile=arffile,
+                rmffile=rmffile,
+                backfile=backname,
+                backscale=backscale):
+
+            written['all'  ] = os.path.basename(allfname)
+            written['files'].append(allfname)
+
+        if not self._make_individual:
+            return written
+
+        for telname in Teldef.telnames:
+
+            print(telname)
+
+            telfname = dstfname.format(telname)
+            backname = None
+            if backfiles is not None:
+                if telname in backfiles:
+                    backname = backfiles[telname]
+
+            arffile = None
+            rmffile = None
+
+            if respfiles is not None:
+                if telname in respfiles['arf']:
+                    arffile = respfiles['arf'][telname]
+
+                if telname in respfiles['rmf']:
+                    rmffile = respfiles['rmf'][telname]
+
+            if self._write_pha(
+                    telname,
+                    telfname,
+                    arffile=arffile,
+                    rmffile=rmffile,
+                    backfile=backname,
+                    backscale=backscale):
+
+                written[telname] = os.path.basename(telfname)
+                written['files'].append(telfname)
+
+        return written
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/eventspack.py
+++ b/artproducts/src/artproducts/eventspack.py
@@ -0,0 +1,128 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+
+import numpy as np
+
+from arttools.wcs import Wcs
+from arttools.events import Events
+from arttools.telescope import Teldef
+
+
+class  Calculate(object):
+
+    def __init__(self, method, parameters, datafields=None):
+        self._method     = method
+        self._parameters = parameters
+        self._datafields = datafields
+
+        self._result = {
+            'all': 0
+        }
+
+    @property
+    def result(self):
+        return self._result
+
+    def apply(self, telname, data):
+        params = [data[p] for p in self._parameters]
+
+        value = self._method(*params)
+
+        self._result[telname]  = value
+        self._result['all'  ] += value
+
+
+class EventsPack(object):
+
+    def __init__(self, evtdir):
+        self._evtdir = evtdir
+
+        self._epoch0 = 0
+        self._tstart = 0
+        self._tstop  = 0
+        self._count  = 0
+
+        self._data = {}
+
+    def __iter__(self):
+        return iter(self._data.items())
+
+    @property
+    def empty(self):
+        return not self._data
+
+    @property
+    def count(self):
+        return self._count
+
+    @property
+    def epoch0(self):
+        return self._epoch0
+
+    @property
+    def tstart(self):
+        return self._tstart
+    
+    @property
+    def tstop(self):
+        return self._tstop
+
+    def _event_files(self, stem):
+        for telname in Teldef.telnames:
+            evtfile = '{}{}_cl.fits'.format(stem, telname)
+            yield self._evtdir.pathfor(evtfile)
+
+    def read(self, stem, epoch0):
+        starts = []
+        stops  = []
+
+        count  = 0
+
+        for eventfile in self._event_files(stem):
+            events = Events(eventfile).read()
+
+            if events.empty: 
+                continue
+
+            starts.append(events.tstart)
+            stops.append(events.tstop)
+
+            count += events.size
+
+            projection = Wcs.from_eventfile(eventfile)
+
+            self._data[events.telname] = {
+                'events'    : events,
+                'projection': projection.get()
+            }
+
+        self._tstart = np.max(starts)
+        self._tstop  = np.min(stops )
+
+        if epoch0 is not None:
+            self._epoch0 = epoch0
+        else:
+            self._epoch0 = self._tstart
+
+        self._count = count
+
+        return self
+
+    def call(self, callee):
+        for telname in Teldef.telnames:
+            if telname not in self._data:
+                continue
+
+            callee.apply(telname, self._data[telname])
+
+        return callee.result
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/eventswcs.py
+++ b/artproducts/src/artproducts/eventswcs.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+
+import warnings
+warnings.simplefilter('ignore')
+
+import numpy as np
+
+from astropy.io import fits
+
+from arttools.wcs import Wcs
+from arttools.fstools import Dir
+
+from arttools.gti import Gti
+from arttools.events import Events
+
+from artproducts.version import __version__
+
+
+class EventsWcs(object):
+
+    def __init__(self, srcfile, wcs):
+        self._wcs        = wcs
+        self._projection = Wcs.from_file(wcs)
+        self._eventfile  = Events(srcfile)
+
+    @property
+    def file(self):
+        return self._eventfile
+
+    @property
+    def tstart(self): 
+        return self._eventfile.tstart
+
+    @property
+    def tstop(self): 
+        return self._eventfile.tstop
+
+    @property
+    def gti(self):
+        return self._eventfile.gti
+
+    def deadtime(self, start, stop):
+        return self._eventfile.deadtime(start, stop)
+
+    def _wcs_mask(self, x, y):
+        xsize = int(self._projection.get().wcs.crpix[0]*2 + 1)
+        ysize = int(self._projection.get().wcs.crpix[1]*2 + 1)
+
+        asize = x * ysize + xsize
+
+        wcs_mask = np.all([x > 0, y > 0, asize < xsize * ysize], axis=0)
+
+        return wcs_mask
+
+    def prepare(self, fitwcs=False, usergti=None):
+        self._eventfile.read()
+
+        ra       = np.array(self._eventfile.events.column('RA'  ))
+        dec      = np.array(self._eventfile.events.column('DEC' ))
+        times    = np.array(self._eventfile.events.column('TIME'))
+        evt_gti  = self._eventfile.gti
+
+        self._x  = np.zeros_like(ra )
+        self._y  = np.zeros_like(dec)
+
+        self._x, self._y \
+                 = self._projection.world2pix(ra, dec)
+
+        if fitwcs:
+            wcs_mask = self._wcs_mask(self._x, self._y)
+        else:
+            wcs_mask = np.full_like(times, True)
+
+        wcs_gti  = Gti.from_mask(times, wcs_mask).normalize(edge_delta=10.)
+        
+        gti      = evt_gti * wcs_gti
+
+        if usergti is not None:
+            self._gti = gti * Gti.from_hduname(usergti, 'stdgti')
+        else:
+            self._gti = gti
+
+        self._mask = self._gti.mask(times)
+
+    def read(self):
+        self._eventfile.read()
+
+    def write(self, dstfile, creator=''):
+        
+        pos    = 13
+        keys   = ['X', 'Y']
+        layout = {
+            'X': {'format': '1D', 'unit': ''},
+            'Y': {'format': '1D', 'unit': ''},
+        }
+        data   = {
+            'X': self._x,
+            'Y': self._y
+        }
+
+        self._eventfile.modify_and_write_cl(dstfile, creator, keys, layout, data, pos, self._mask, self._gti)
+
+        with fits.open(dstfile, mode='update') as dsthdul:
+            dsthdul['EVENTS'].header.update(self._projection.get().to_header())
+            dsthdul['EVENTS'].header['MJDREF'] = (self._eventfile.mjdref, 'MJD corresponding to SC clock start 2000.0 MSK')
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/histograms.py
+++ b/artproducts/src/artproducts/histograms.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+
+
+class Hist(object):
+
+    def __init__(self, vstart, vstop):
+        pass
+
+
+class TimeHist(object):
+
+    def __init__(self, epoch0, start, stop, binsize):
+        pass
+
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/image.py
+++ b/artproducts/src/artproducts/image.py
@@ -0,0 +1,149 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+# import warnings
+# warnings.simplefilter('ignore')
+
+import numpy as np
+
+from astropy.io import fits
+
+from arttools.wcs import Wcs
+from arttools.fstools import Dir
+from arttools.events import Events
+
+from artproducts.version import __version__
+
+from artproducts.eventwcs import EventWcs
+
+
+class Image(object):
+
+    def __init__(self, eventfiles, wcs):
+        self._wcs        = wcs
+        self._projection = Wcs.from_file(wcs)
+        self._eventfiles = eventfiles
+
+        self._elow       = 0
+        self._ehigh      = 0
+
+        self._mjdref     = 0
+        self._exposure   = 0
+        self._deadtime   = 0
+        self._tstart     = 0
+        self._tstop      = 0
+        self._onsource   = 0
+
+    def make(self, elow, ehigh):
+        self._image = self._make_image()
+        self._elow  = elow
+        self._ehigh = ehigh
+
+        image_exp   = []
+        image_deadt = []
+        image_start = []
+        image_stop  = []
+
+        for evtfile in self._eventfiles:
+            events = EventWcs(evtfile, self._wcs)
+            events.read()
+
+            self._mjdref = events.file.mjdref
+            self._image  = self._events_to_image(events, elow, ehigh, self._image)
+
+            start = events.tstart
+            stop  = events.tstop
+
+            image_exp.append(events.gti.exposure)
+            image_deadt.append(events.deadtime(start, stop))
+            image_start.append(start)
+            image_stop.append(stop)
+
+        self._exposure = np.sum(image_exp  )
+        self._deadtime = np.sum(image_deadt)
+        self._tstart   = np.min(image_start)
+        self._tstop    = np.max(image_stop )
+        self._onsource = self._tstop - self._tstart
+
+        print('onsource [sec] = {}'.format(self._onsource))
+        print('exposure [sec] = {} (average per head {})'.format(self._exposure, self._exposure / 7.))
+        print('deadtime [sec] = {} (average per head {})'.format(self._deadtime, self._deadtime / 7.))
+        print('tstart   [sec] = {}'.format(self._tstart  ))
+        print('tstop    [sec] = {}'.format(self._tstop   ))
+
+    def write(self, dstfile):
+        fits.PrimaryHDU(
+            data=self._image, 
+            header=self._projection.get().to_header()
+        ).writeto(dstfile, overwrite=True, checksum=True)
+
+        gtistart = self._tstart 
+        gtistop  = self._tstop
+        deadtime = self._deadtime
+        exposure = self._exposure - self._deadtime
+        onsource = self._onsource
+
+        with fits.open(dstfile, mode='update') as hdul:
+            hdul[0].header['MJDREF'  ] = (self._mjdref, '[d] MJDREF')
+            hdul[0].header['TSTART'  ] = (gtistart    , '[sec]'     )
+            hdul[0].header['TSTOP'   ] = (gtistop     , '[sec]'     )
+            hdul[0].header['ONSOURCE'] = (onsource    , '[sec]'     )
+            hdul[0].header['EXPOSURE'] = (exposure    , '[sec]'     )
+            hdul[0].header['E_LOW'   ] = (self._elow  , '[keV]'     )
+            hdul[0].header['E_HIGH'  ] = (self._ehigh , '[keV]'     )
+
+        print('written: {}'.format(dstfile))
+
+    def _make_mask(self, events, elow, ehigh):
+        en    = events.file.events.column('ENERGY')
+        grade = events.file.events.column('GRADE' )
+        flag  = events.file.events.column('FLAG'  )
+
+        mask  = np.all([
+                en    >= elow ,
+                en    <= ehigh,
+                grade <  9    ,
+                flag  == 0
+            ], axis=0)
+
+        return mask
+
+    def _make_image(self):
+        xsize = int(self._projection.get().wcs.crpix[0]*2 + 1)
+        ysize = int(self._projection.get().wcs.crpix[1]*2 + 1)
+        image = np.zeros((ysize, xsize), dtype=np.double)
+
+        return image
+
+    def _events_to_image(self, events, elow, ehigh, image):
+        times = np.array(events.file.events.column('TIME'))
+        ra    = np.array(events.file.events.column('RA'  ))
+        dec   = np.array(events.file.events.column('DEC' ))
+
+        xsize = int(self._projection.get().wcs.crpix[0]*2 + 1)
+        ysize = int(self._projection.get().wcs.crpix[1]*2 + 1)
+
+        x, y  = self._projection.world2pix(ra, dec)
+
+        asize    = x * ysize + xsize
+        xy_mask  = np.all([x > 0, y > 0, asize < xsize * ysize], axis=0)        
+
+        evt_mask = events.gti.mask(times)
+        img_mask = self._make_mask(events, elow, ehigh)
+
+        masklist = [evt_mask, img_mask, xy_mask]
+        mask     = np.all(masklist, axis=0)
+
+        np.add.at(image, (x[mask], y[mask]), 1)
+
+        return image
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/lightcurve.py
+++ b/artproducts/src/artproducts/lightcurve.py
@@ -0,0 +1,327 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+import os
+
+import numpy as np
+
+from astropy.io import fits
+
+from regions import Regions
+
+from arttools.gti import Gti
+from arttools.wcs import Wcs
+
+from arttools.telescope import Teldef
+
+from artproducts.version import __version__
+
+class Lightcurve(object):
+
+    def __init__(self, events, binsize, make_individual=False):
+        self._events  = events
+        self._epoch0  = events.epoch0
+        self._start   = events.tstart
+        self._stop    = events.tstop
+        self._binsize = binsize
+
+        self._lcdata  = {}
+        self._lcmeta  = {}
+
+        self._make_inividual = make_individual
+
+    @property
+    def meta(self):
+        return self._lcmeta
+
+    @property
+    def get(self):
+        return self._lcdata
+    
+    def create(self, region, elow, ehigh):
+
+        all_lcdata = {
+            'time'    : [],
+            'count'   : [],
+            'error'   : [],
+            'exposure': [],
+            'flag'    : [],
+            'gti'     : []
+        }
+
+        self._lcmeta['all'] = {
+            'exposure': 0.0,
+            'deadtime': 0.0,
+            'livetime': 0.0,
+            'elow'    : elow ,
+            'ehigh'   : ehigh,
+            'events'  : 0,
+            'selected': 0,
+            'filter'  : None
+        }
+
+        for telname, evtdata in self._events:
+
+            lcdata, lcmeta = self._make_lcurve(evtdata, region, elow, ehigh)
+            
+            self._lcdata[telname] = lcdata
+            self._lcmeta[telname] = lcmeta
+
+            for key in ['time', 'count', 'error', 'exposure', 'flag', 'gti']:
+                all_lcdata[key].append(lcdata[key])
+
+            for key in ['exposure', 'deadtime', 'livetime', 'events', 'selected']:
+                self._lcmeta['all'][key] += lcmeta[key]
+
+            self._lcmeta['all']['filter'] = lcmeta['filter']
+
+
+        all_time     = all_lcdata['time'][0]
+        all_count    = np.sum(all_lcdata['count'], axis=0)
+        all_error    = np.sqrt(np.sum(np.power(all_lcdata['error'], 2.), axis=0))
+        
+        all_exposure = np.sum(all_lcdata['exposure'], axis=0)
+
+        all_flag     = np.zeros_like(all_lcdata['flag'][0], dtype=int)
+        one_mask     = np.any([ff == 1 for ff in all_lcdata['flag']], axis=0)
+        two_mask     = np.any([ff == 2 for ff in all_lcdata['flag']], axis=0)
+
+        all_flag[one_mask] = 1
+        all_flag[two_mask] = 2
+
+        all_gti      = np.prod(all_lcdata['gti'])
+
+        self._lcdata['all'] = {
+            'time'    : all_time,
+            'count'   : all_count,
+            'error'   : all_error,
+            'exposure': all_exposure,
+            'flag'    : all_flag,
+            'gti'     : all_gti
+        }
+
+    def _make_bins(self):
+        dt    = self._start - self._epoch0
+        steps = np.ceil(dt / self._binsize)
+        t0    = self._epoch0 + self._binsize * steps
+
+        edges = np.arange(t0, self._stop, self._binsize)
+        bins  = (edges[  :-1] + edges[ 1:  ]) / 2.
+
+        return edges, bins
+
+    def _make_flag(self, edges, bins, gti):
+        flag           = np.ones_like(bins, dtype=int)
+
+        edge_intervals = zip(edges[:-1], edges[1:])
+        edge_intervals = Gti([*edge_intervals])
+
+        index = 0
+        for interval in edge_intervals.array:
+            interval_gti = Gti(interval) * gti
+            flag[index]  = 2 if np.diff(interval) > interval_gti.exposure else 0
+
+            index += 1
+        
+        return flag
+
+    def _make_lcurve(self, evtdata, region, elow, ehigh):
+        data        = evtdata['events'    ]
+        proj        = evtdata['projection']
+
+        edges, bins = self._make_bins()
+
+        gti         = data.gti * Gti([self._start, self._stop])
+        exp, deadt, livet \
+                    = self._make_timekeys(data, gti)
+        mask, filter_expr \
+                    = self._make_mask(data, region, proj, elow, ehigh)
+        
+        times       = np.array(data.events.column('TIME'))
+        counts, _   = np.histogram(times[mask], bins=edges)
+        errors      = np.sqrt(counts)
+
+        binexp      = np.diff(edges)
+        bindeadt, _ = data.bindeadtime(edges, bins)
+
+        flag        = self._make_flag(edges, bins, gti)
+
+        exposure    = binexp - bindeadt
+
+        lcdata      = {
+            'time'    : bins,
+            'count'   : counts,
+            'error'   : errors,
+            'exposure': exposure,
+            'flag'    : flag,
+            'gti'     : gti
+        }
+
+        lcmeta      = {
+            'exposure': exp  ,
+            'deadtime': deadt,
+            'livetime': livet,
+            'elow'    : elow ,
+            'ehigh'   : ehigh,
+            'events'  : len(times),
+            'selected': len(times[mask]),
+            'filter'  : filter_expr
+        }
+
+        return lcdata, lcmeta
+
+    def _make_timekeys(self, evtdata, gti):
+        exposure = gti.exposure
+
+        deadtime = 0
+        for gtistart, gtistop in gti.array:
+            deadtime += evtdata.deadtime(gtistart, gtistop)
+
+        livetime = exposure - deadtime
+
+        return exposure, deadtime, livetime
+
+    def _make_goodevt_mask(self, evtdata, grade=9, flag=0):
+        maskexpr = '(GRADE < {grade}) && (FLAG == {flag})'
+        maskexpr = maskexpr.format(grade=grade, flag=flag)
+
+        grademask = evtdata.events.column('GRADE') <  grade
+        flagmask  = evtdata.events.column('FLAG' ) == flag
+
+        return np.all([grademask, flagmask], axis=0), maskexpr
+
+    def _make_energy_mask(self, evtdata, elow, ehigh):
+        maskexpr = '(ENERGY >= {elow} && ENERGY <= {ehigh})'
+        maskexpr = maskexpr.format(elow=elow, ehigh=ehigh)
+
+        return np.all([
+            evtdata.events.column('ENERGY') >= elow ,
+            evtdata.events.column('ENERGY') <= ehigh
+            ], axis = 0), maskexpr
+
+    def _make_mask(self, evtdata, region, projection, elow, ehigh):
+        goodmask, goodexpr \
+            = self._make_goodevt_mask(evtdata)
+        
+        enmask, enexpr \
+            = self._make_energy_mask(evtdata, elow, ehigh)
+
+        regionmask = region.mask(projection,
+            np.array(evtdata.events.column('RA' )),
+            np.array(evtdata.events.column('DEC')))
+
+        expr = '{} && {}'.format(goodexpr, enexpr)
+
+        return np.all([goodmask, enmask, regionmask], axis=0), expr
+
+    def _write_curve(self, name, dstfname, backfile=None):
+        if not name in self._lcdata:
+            return False
+
+        mjdref = 51543.875
+
+        lcdata = self._lcdata[name]
+        lcmeta = self._lcmeta[name]
+
+        time   = lcdata['time' ]
+        rate   = lcdata['count'] / lcdata['exposure']
+        error  = lcdata['error'] / lcdata['exposure']
+        flag   = lcdata['flag' ]
+        gti    = lcdata['gti'  ]
+
+        # # --- DEBUG ---
+        # import matplotlib.pyplot as plt
+
+        # plt.title(name)
+        # # plt.plot(lcdata['time'], rate)
+        # # plt.errorbar(lcdata['time'], rate, yerr=error)
+        # # plt.plot(lcdata['time'], lcdata['count'])
+        # plt.errorbar(lcdata['time'], lcdata['count'], yerr=lcdata['error'])
+        # # plt.plot(hkdata['times'][1:], countdiff)
+        # # plt.plot(edges[1:], fracexp)
+        # plt.show()
+        # # --- 
+
+        hdu = fits.PrimaryHDU()
+
+        # --- STDGTI HDU ---
+        a1 = np.array(time )
+        a2 = np.array(rate )
+        a3 = np.array(error)
+        a4 = np.array(flag )
+
+        c1 = fits.Column(name='TIME' , format='1D', unit='sec'       , array=a1)
+        c2 = fits.Column(name='RATE' , format='1E', unit='counts/sec', array=a2)
+        c3 = fits.Column(name='ERROR', format='1E', unit=''          , array=a3)
+        c4 = fits.Column(name='FLAG' , format='1I', unit=''          , array=a4)
+        
+        cols = fits.ColDefs([c1, c2, c3, c4])
+
+        hdu1 = fits.BinTableHDU.from_columns(cols)
+        hdu1.name = 'RATE'
+        hdu1.header['ORIGIN'  ] = 'IKI RAS'
+        hdu1.header['CREATOR' ] = 'artproducts v.{}'.format(__version__)
+        hdu1.header['TELESCOP'] = 'SRG/ART-XC'
+        hdu1.header['INSTRUME'] = name
+        hdu1.header['MJDREF'  ] = mjdref
+        hdu1.header['TSTART'  ] = (self._start       , '[sec]')
+        hdu1.header['TSTOP'   ] = (self._stop        , '[sec]')
+        hdu1.header['EXPOSURE'] = (lcmeta['exposure'], '[sec]')
+        hdu1.header['DEADTIME'] = (lcmeta['deadtime'], '[sec]')
+        hdu1.header['LIVETIME'] = (lcmeta['livetime'], '[sec]')
+        hdu1.header['E_LOW'   ] = (lcmeta['elow'    ], '[keV]')
+        hdu1.header['E_HIGH'  ] = (lcmeta['ehigh'   ], '[keV]')
+        hdu1.header['BIN'     ] = (self._binsize     , '[sec]')
+        hdu1.header['TIMEDEL' ] = (self._binsize     , '[sec]')
+
+        if backfile is not None:
+            hdu1.header['BACKFILE'] = backfile
+
+        hdu2 = gti.make_hdu(mjdref)
+
+        # --- make FITS file ---
+        hdulist = fits.HDUList([hdu, hdu1, hdu2])
+        hdulist.writeto(dstfname, overwrite=True, checksum=True)
+
+        return True
+
+    def write(self, dstfname, backfiles=None):
+        written = {
+            'files': []
+        }
+        
+        allfname = dstfname.format('_all')
+        backname = None
+        if backfiles is not None:
+            if 'all' in backfiles:
+                backname = backfiles['all']
+
+        if self._write_curve('all', allfname, backname):
+            written['all'  ] = os.path.basename(allfname)
+            written['files'].append(allfname)
+
+        if not self._make_inividual:
+            return written
+
+        for telname in Teldef.telnames:
+            telfname = dstfname.format(telname)
+            backname = None
+            if backfiles is not None:
+                if telname in backfiles:
+                    backname = backfiles[telname]
+
+            if self._write_curve(telname, telfname, backname):
+                written[telname] = os.path.basename(telfname)
+                written['files'].append(telfname)
+
+        return written
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/products.py
+++ b/artproducts/src/artproducts/products.py
@@ -0,0 +1,486 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+import os
+import sys
+import shutil
+import argparse
+
+import numpy as np
+
+from arttools.cmd import Command, ExecutionResult
+from arttools.task import (
+    Task, TaskError, TaskArgs, TaskCmds
+)
+from arttools.errors import Error
+from arttools.fstools import Dir
+from arttools.argparse import KvAction
+
+from arttools.errors import RegionsError
+
+from artpipeline.caldb import CaldbInfo
+from artpipeline.caldb import CaldbOrientation
+from artpipeline.orientation import Orientation
+
+from artproducts.version import __version__
+
+from artproducts.eventswcs import EventsWcs
+from artproducts.regions import Region
+
+from artproducts.eventspack import EventsPack, Calculate
+
+from artproducts.responces import Arf
+from artproducts.responces import Rmf
+
+from artproducts.image import Image
+from artproducts.lightcurve import Lightcurve
+from artproducts.enspectrum import EnergySpectrum
+
+
+class Args(TaskArgs):
+
+    def __init__(self):
+        super().__init__()
+
+    def read_env(self):
+        if not 'ARTCALDB' in os.environ:
+            raise TaskError('ARTCALDB not found (environment variable not set?)')
+
+        self.caldbdir = os.environ['ARTCALDB']
+
+    def read_cfg(self, cfgfile):
+        pass
+
+    def read_args(self):
+        argparser = argparse.ArgumentParser()
+        argparser.add_argument(
+            'stem',
+            action=KvAction, 
+            help='newfile creation stem')
+        argparser.add_argument(
+            'srcdir',
+            action=KvAction,
+            help='input directory')
+        argparser.add_argument(
+            'dstdir',
+            action=KvAction,
+            help='output directory')
+        argparser.add_argument(
+            'tmpdir',
+            action=KvAction,
+            help='temporary directory')
+        argparser.add_argument(
+            '--prepare-skytile',
+            default=False,
+            action='store_true',
+            help='input files stem')
+        argparser.add_argument(
+            '--fit-to-wcs',
+            default=False,
+            action='store_true',
+            help='process only wcs-bound events')
+        argparser.add_argument(
+            '--wcs', 
+            default=None,
+            action=KvAction,
+            help='WCS region')
+        argparser.add_argument(
+            '--srcra', 
+            default=None,
+            action=KvAction,
+            help='source position RA')
+        argparser.add_argument(
+            '--srcdec', 
+            default=None,
+            action=KvAction,
+            help='source position Dec')
+        argparser.add_argument(
+            '--srcreg',
+            default=None,
+            action=KvAction,
+            help='source region')
+        argparser.add_argument(
+            '--bkgreg',
+            default=None,
+            action=KvAction,
+            help='background region')
+        argparser.add_argument(
+            '--elow', 
+            default=4.,
+            action=KvAction,
+            help='low energy bound')
+        argparser.add_argument(
+            '--ehigh', 
+            default=12.,
+            action=KvAction,
+            help='high energy bound')
+        argparser.add_argument(
+            '--binsize', 
+            default=1.,
+            action=KvAction,
+            help='time series bin size')
+        argparser.add_argument(
+            '--epoch0', 
+            default=None,
+            action=KvAction,
+            help='zero epoch for light curves')
+        argparser.add_argument(
+            '--orient', 
+            default=None,
+            action=KvAction,
+            help='orientation file')
+        argparser.add_argument(
+            '--usergti',
+            type=str,
+            default=None,
+            help='user gti file',
+            action=KvAction)
+        argparser.add_argument(
+            '--make-individual',
+            default=False,
+            action='store_true',
+            help='make individual products for each telescope')
+        args = argparser.parse_args()
+
+        self.stem    = args.stem
+
+        self.srcdir  = Dir(args.srcdir)
+        self.dstdir  = Dir(args.dstdir)
+
+        self.tmpdir  = Dir(args.tmpdir) / str(self.pid)
+        self.tmpdst  = self.tmpdir / 'dst'
+
+        self.prepare = args.prepare_skytile
+        self.fitwcs  = args.fit_to_wcs
+        self.wcs     = args.wcs
+        self.srcreg  = args.srcreg
+        self.bkgreg  = args.bkgreg
+        self.srcra   = args.srcra
+        self.srcdec  = args.srcdec
+        self.elow    = float(args.elow   )
+        self.ehigh   = float(args.ehigh  )
+        self.binsize = float(args.binsize)
+
+        self.epoch0  = None
+        if args.epoch0 is not None:
+            self.epoch0 = float(args.epoch0)
+        
+        self.orifile = args.orient
+        self.usergti = args.usergti
+
+        self.make_individual = args.make_individual
+
+    def print(self):
+        print('Input parameters:')
+        print('  stem       = {}'.format(self.stem           ))
+        print('  srcdir     = {}'.format(self.srcdir.get()   ))
+        print('  dstdir     = {}'.format(self.dstdir.get()   ))
+        print('  tmpdir     = {}'.format(self.tmpdir.get()   ))
+        print('  prepare    = {}'.format(self.prepare        ))
+        print('  fitwcs     = {}'.format(self.fitwcs         ))
+        print('  wcs        = {}'.format(self.wcs            ))
+        print('  srcra      = {}'.format(self.srcra          ))
+        print('  srcdec     = {}'.format(self.srcdec         ))
+        print('  srcreg     = {}'.format(self.srcreg         ))
+        print('  bkgreg     = {}'.format(self.bkgreg         ))
+        print('  elow       = {}'.format(self.elow           ))
+        print('  ehigh      = {}'.format(self.ehigh          ))
+        print('  binsize    = {}'.format(self.binsize        ))
+        print('  epoch0     = {}'.format(self.epoch0         ))
+        print('  orient     = {}'.format(self.orifile        ))
+        print('  usergti    = {}'.format(self.usergti        ))
+        print('  individual = {}'.format(self.make_individual))
+        print()
+        
+    def check(self):
+        if not self.srcdir.exists():
+            raise TaskError('<srcdir> not found')
+
+        self.dstdir.check()
+        self.tmpdir.check(clean=True)
+        self.tmpdst.check(clean=True)
+
+
+class Products(Task):
+
+    def __init__(self):
+        super().__init__()
+
+        self._name = 'artproducts v.{}'.format(__version__)
+
+        print('*** {}'.format(self._name))
+
+        self._args = Args()
+
+    def initialize(self):
+        self._args.read()
+        self._args.print()
+        self._args.check()
+
+        self._imgdir = self._args.dstdir / 'img'
+        self._phadir = self._args.dstdir / 'pha'
+        self._lcdir  = self._args.dstdir / 'lc'
+
+    def finalize(self):
+        self._args.tmpdir.delete()
+
+    def runmain(self):
+        if self._args.prepare:
+            self._evtdir = self._args.dstdir / 'events'
+            self._prepare()
+        else:
+            if self._args.orifile is None:
+                raise TaskError('<orient> file not set')
+
+            if not os.path.exists(self._args.orifile):
+                raise TaskError('<orient> file not found')
+
+            if self._args.srcra is None or self._args.srcdec is None:
+                raise TaskError('<srcra>/<srcdec> not set')
+
+            self._evtdir = self._args.srcdir
+            self._products()
+
+        print('*** artproducts v.{} finished'.format(__version__))
+
+    def _prepare(self):
+        self._evtdir.check(clean=True)
+        self._imgdir.check(clean=True)
+        self._phadir.check(clean=True)
+        self._lcdir.check(clean=True)
+
+        evtfiles  = []
+
+        print('Preprocessing event files:')
+
+        for telname in Teldef.telnames:
+            evtfile = ''.join((self._args.stem, telname, '_cl.fits'))
+            evtdst  = self._evtdir.pathfor(evtfile)
+
+            evtlist = EventsWcs(self._args.srcdir.pathfor(evtfile), self._args.wcs)
+            evtlist.prepare(self._args.fitwcs, self._args.usergti)
+
+            evtlist.write(evtdst, creator=self._name)
+            print('written: {}'.format(evtdst))
+
+            evtfiles.append(evtdst)
+
+        print()
+        print('Make image:')
+
+        imgfile = ''.join((self._args.stem, '_all.img'))
+        imgdst  = self._imgdir.pathfor(imgfile)
+
+        image   = Image(evtfiles, self._args.wcs)
+        image.make(self._args.elow, self._args.ehigh)
+
+        image.write(imgdst)
+
+    def _products(self):
+        cdbinfo = CaldbInfo(self._args.caldbdir).get()
+        print('CALDB info: version={}, path={}'.format(cdbinfo['CALDBVER'], cdbinfo['CALDBDIR']))
+
+        self._orient \
+                = Orientation(
+                    CaldbOrientation(self._args.caldbdir, 'GYRO'))
+
+        oridata = self._orient.read(self._args.orifile)
+
+        print()
+        print('Reading events...')
+
+        events = EventsPack(self._evtdir).read(self._args.stem, self._args.epoch0)
+        if events.empty:
+            raise TaskError('event files empty')
+
+        print(' GTI = [{}, {}]'.format(events.tstart, events.tstop))
+        print(' epoch0 = {}'.format(events.epoch0))
+        print(' total events = {}'.format(events.count))
+
+        print()
+        print('Reading regions...')
+
+        srcreg = Region(self._args.srcreg)
+        bkgreg = Region(self._args.bkgreg)
+
+        srcarea = events.call(Calculate(srcreg.area, ['projection']))
+        bkgarea = events.call(Calculate(bkgreg.area, ['projection']))
+
+        areascale = 1.
+
+        if bkgarea['all'] > 0:
+            backscale = srcarea['all'] / bkgarea['all']
+        else: 
+            backscale = srcarea['all']
+
+        print(' source area = {}'.format(srcarea['all']))
+        print(' background area = {}'.format(bkgarea['all']))
+
+        print(' area scale = {}'.format(areascale))
+        print(' back scale = {}'.format(backscale))
+
+        print()
+        print('Making lightcurves...')
+        self._make_lcurves(events, self._args.binsize, srcreg, bkgreg)
+
+        print()
+        print('Making energy spectra...')
+        self._make_enspectra(events, oridata, srcreg, bkgreg, areascale, backscale)
+
+
+    def _make_lcurves(self, events, binsize, srcreg, bkgreg):
+
+        dstdir = self._args.dstdir / 'lc'
+        dstdir.check()
+        
+        print('background:')
+        lcurvebkgfile = ''.join((self._args.stem, '{}', '_bkg.lc'))
+        lcurvebkgfile = dstdir.pathfor(lcurvebkgfile)
+
+        lcurvebkg = Lightcurve(events, binsize, make_individual=self._args.make_individual)
+        lcurvebkg.create(bkgreg, self._args.elow, self._args.ehigh)
+
+        meta = lcurvebkg.meta['all']
+
+        total    = meta['events']
+        selected = meta['selected']
+        per      = np.round((selected / total) * 100, 2)
+
+        print(' filter = {}'.format(meta['filter']))
+        print(' selected events = {} of {} ({}%)'.format(selected, total, per))
+
+        writtenbkg = lcurvebkg.write(lcurvebkgfile)
+
+        print('written:')
+        for item in writtenbkg['files']:
+            print(' {}'.format(item))
+
+        print('source:')
+        lcurvesrcfile = ''.join((self._args.stem, '{}', '_src.lc'))
+        lcurvesrcfile = dstdir.pathfor(lcurvesrcfile)
+        
+        lcurvesrc = Lightcurve(events, binsize, make_individual=self._args.make_individual)
+        lcurvesrc.create(srcreg, self._args.elow, self._args.ehigh)
+
+        meta     = lcurvesrc.meta['all']
+
+        total    = meta['events']
+        selected = meta['selected']
+        per      = np.round((selected / total) * 100, 2)
+
+        print(' filter = {}'.format(meta['filter']))
+        print(' selected events = {} of {} ({}%)'.format(selected, total, per))
+
+        writtensrc = lcurvesrc.write(lcurvesrcfile, writtenbkg)
+
+        print('written:')
+        for item in writtensrc['files']:
+            print(' {}'.format(item))
+
+    def _make_responses(self, events, oridata, srcreg):
+
+        dstdir = self._args.dstdir / 'pha'
+        dstdir.check()
+        
+        dstarffile = ''.join((self._args.stem, '{}', '.arf'))
+        dstarffile = dstdir.pathfor(dstarffile)
+
+        arf = Arf(self._args.caldbdir, self._orient, make_individual=self._args.make_individual)
+        arf.create(events, oridata, srcreg, self._args.srcra, self._args.srcdec)
+
+        print('Warning: average ARF responce will *NOT* be generated (use external procedure)')
+        
+        arfwritten = arf.write(dstarffile)
+
+        print('written arf responces:')
+        if not arfwritten['files']:
+            print('<none>')
+        else:
+            for arfitem in arfwritten['files']:
+                print(arfitem)
+
+        dstdir = self._args.dstdir / 'pha'
+        dstdir.check()
+        
+        dstrmffile = ''.join((self._args.stem, '{}', '.rmf'))
+        dstrmffile = dstdir.pathfor(dstrmffile)
+        
+        rmf = Rmf(self._args.caldbdir, make_individual=self._args.make_individual)
+        rmf.create()
+
+        print('Warning: average RMF responce will *NOT* be generated (use external procedure)')
+        
+        rmfwritten = rmf.write(dstrmffile)
+
+        print('written rmf responces:')
+        if not rmfwritten['files']:
+            print('<none>')
+        else:
+            for rmfitem in rmfwritten['files']:
+                print(rmfitem)
+
+        return arfwritten, rmfwritten
+
+    def _make_enspectra(self, events, oridata, srcreg, bkgreg, areascale, backscale):
+
+        # responces
+        arffiles, rmffiles = self._make_responses(events, oridata, srcreg)
+
+        responces = {
+            'arf': arffiles,
+            'rmf': rmffiles
+        } 
+
+        # background spectra
+        enspecbkgfile = ''.join((self._args.stem, '{}', '_bkg.pha'))
+        enspecbkgfile = (self._args.dstdir / 'pha').pathfor(enspecbkgfile)
+
+        spectrumbkg = EnergySpectrum(events, make_individual=self._args.make_individual)
+        spectrumbkg.create(bkgreg)
+        writtenbkg = spectrumbkg.write(enspecbkgfile)
+
+        print('written background pha:')
+        if not writtenbkg['files']:
+            print('<none>')
+        else:
+            for phaitem in writtenbkg['files']:
+                print(phaitem)
+
+        # source spectra
+        enspecsrcfile = ''.join((self._args.stem, '{}', '_src.pha'))
+        enspecsrcfile = (self._args.dstdir / 'pha').pathfor(enspecsrcfile)
+
+        spectrumsrc = EnergySpectrum(events, make_individual=self._args.make_individual)
+        spectrumsrc.create(srcreg)
+        writtensrc = spectrumsrc.write(enspecsrcfile, responces, writtenbkg, backscale)
+
+        print('written source pha:')
+        if not writtensrc['files']:
+            print('<none>')
+        else:
+            for phaitem in writtensrc['files']:
+                print(phaitem)
+
+
+def main():
+    try:
+        Products().run()
+    except RegionsError as e:
+        print('error: regions:', e)
+    except TaskError as e:
+        print('error: task execution:', e)
+    except Exception as e:
+        print('error: unknown:', e)
+
+    # Products().run()
+
+
+if __name__ == '__main__':
+    pass
+
--- a/artproducts/src/artproducts/regions.py
+++ b/artproducts/src/artproducts/regions.py
@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021-2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+from regions import Regions
+from regions import CompoundSkyRegion
+from regions.shapes.circle import CircleSkyRegion
+from regions.shapes.annulus import CircleAnnulusSkyRegion
+
+from astropy.coordinates import SkyCoord
+
+from arttools.errors import RegionsError
+
+class Region(object):
+
+    def __init__(self, regfile):
+        self._regfile = regfile
+
+        # -- read regions
+        self._reglist = Regions.read(self._regfile)
+        self._regunit = self._reglist[0].center.info.unit
+
+        # --- check 
+        if not self._reglist:
+            raise RegionsError('no regions found')
+
+        for region in self._reglist:
+            region_allowed = \
+                isinstance(region, (CircleSkyRegion, CircleAnnulusSkyRegion))
+
+            if not region_allowed:
+                raise RegionsError('unsupported region: {}'.format(type(region)))
+
+        # -- make union region
+
+        self._region = self._reglist[0]
+        for region in self._reglist[1:]:
+            self._region = self._region.union(region)
+
+    def area(self, projection):
+        area = 0
+        for region in self._reglist:
+            area += region.to_pixel(projection).area
+
+        return area
+
+    def mask(self, projection, ra, dec):
+
+        radec = SkyCoord(ra, dec, unit=self._regunit, frame='fk5')
+
+        return self._region.contains(radec, projection)
+
+        # masks = []
+        # for r in self._regions:
+        #     pass
+
+            # rmask = r.contains(radec, projection)
+            # masks.append(rmask) 
+
+        # return np.any(masks, axis=0)
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/responces.py
+++ b/artproducts/src/artproducts/responces.py
@@ -0,0 +1,316 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2026 IKI RAS (http://iki.rssi.ru/)
+# Space Research Institute of the Russian Academy of Science 
+# 
+# This file is part of the M. Pavlinsky SRG/ART-XC software project.
+# -----------------------------------------------------------------------------
+
+import os
+import shutil
+
+import numpy as np
+
+from astropy.io import fits
+
+from arttools.fstools import Dir
+from arttools.telescope import Teldef
+
+from artpipeline.caldb import Caldb
+from artpipeline.caldb import CaldbTelescope
+
+
+class Arf(object):
+
+    EBINS = np.array([4  , 5  , 6, 8, 10, 14, 18  , 25])
+    EECF  = np.array([4.5, 5.5, 7, 9, 12, 16, 21.5    ])
+
+    PCORR = {
+        'T1': [-5.53812028e-06,  5.44531758e-04, -1.85116554e-02,  2.49542143e-01, -4.78704144e-02],
+        'T2': [-9.23161584e-06,  8.50470939e-04, -2.71210316e-02,  3.46807627e-01, -5.10534726e-01],
+        'T3': [-6.39175857e-06,  6.37572616e-04, -2.21113466e-02,  3.02875927e-01, -3.00549874e-01],
+        'T4': [-3.79975811e-06,  3.78351940e-04, -1.38558825e-02,  2.11893093e-01,  5.14311717e-02],
+        'T5': [-8.51754314e-06,  8.25307741e-04, -2.78721554e-02,  3.75886273e-01, -6.00306320e-01],
+        'T6': [-5.44416755e-06,  5.33468306e-04, -1.81215482e-02,  2.45438278e-01, -1.13582748e-01],
+        'T7': [-7.31913644e-06,  6.80886499e-04, -2.23323962e-02,  2.98891459e-01, -3.07578086e-01]
+    }
+
+    ECF_R3 = {
+        'T1': [0.8405893291928408, 0.8578133072455523, 0.8518679621578527, 0.8435798995261736, 0.8289480999358520, 0.7258092846885180, 0.6826893958459460],
+        'T2': [0.7616948204797905, 0.7551934086121032, 0.7265351319204454, 0.7101925259375811, 0.6654367283015024, 0.5911152050970271, 0.6112236775368495],
+        'T3': [0.8291727938992725, 0.8257931679150124, 0.8188083629048590, 0.8057277406342708, 0.7642634099905733, 0.6574702032925820, 0.6553824446937162],
+        'T4': [0.8587518633143223, 0.8629811713390994, 0.8603473794365152, 0.8509428156196533, 0.8255339443817531, 0.7794067227678055, 0.7313918593446697],
+        'T5': [0.8710124678275055, 0.8724032722913310, 0.8690978752281667, 0.8561072162925373, 0.8341782730242377, 0.7799308511134618, 0.6982241619541473],
+        'T6': [0.8621286963648814, 0.8566493477571664, 0.8479740523247319, 0.8344740169388141, 0.8119985053434914, 0.7497446386004684, 0.6533235819021327],
+        'T7': [0.8361233953579142, 0.8314687457264499, 0.8167286887863530, 0.8073078896029924, 0.7795029443860121, 0.6759143436928101, 0.6415284037194291]
+    }
+
+    ECF_R5 ={
+        'T1': [0.8674891551004330, 0.8822134383381507, 0.8788946213372089, 0.8744636104265867, 0.8597222695685300, 0.7557929438315966, 0.7189331472867164],
+        'T2': [0.7936437182568867, 0.7891579186682454, 0.7674259998254548, 0.7589714843682488, 0.7158317895510184, 0.6411584008631043, 0.6751573402559861],
+        'T3': [0.8582713402059252, 0.8542245360657326, 0.8490572253823582, 0.8385523961057851, 0.7992921226502082, 0.7082381667579745, 0.7148249035011437],
+        'T4': [0.8858430082172500, 0.8867274026307359, 0.8870164916860136, 0.8793272870044280, 0.8561885232880430, 0.8040219587253561, 0.7604390487299408],
+        'T5': [0.8930065538441408, 0.8950301833952440, 0.8942787134906093, 0.8854633646996730, 0.8671659219235113, 0.8201161803780476, 0.7338377592101047],
+        'T6': [0.8876123076470380, 0.8835789100530228, 0.8807700953185790, 0.8736529044505901, 0.8565833527159418, 0.7983704564521831, 0.7009986224989362],
+        'T7': [0.8694210354890501, 0.8620577130319129, 0.8498935555726601, 0.8429003979100774, 0.8204142620537092, 0.7239238390896476, 0.6748621998062087]
+    }
+
+    def __init__(self, caldbpath, orient, make_individual=False):
+        self._caldbdir   = Dir(caldbpath)
+        self._orient     = orient
+
+        self._make_individual = make_individual
+
+        srcvigndir  = self._caldbdir / 'ext' / 'vign'
+        self._srcvignfile = srcvigndir.pathfor('art-xc_vignea_full_q200.fits')
+
+        srcarfdir   = self._caldbdir / 'ext' / 'arf'
+        self._srcarffile  = srcarfdir.pathfor('artxc_arf_20191030_v004.arf')
+
+        self._arcmin2deg =  1. / 60.
+        self._pix2arcmin = 45. / 60.
+
+        self._respdata = {}
+        self._respmeta = {}
+
+    def _read_src_vign(self, vignfile):
+        hdul     = fits.open(vignfile)
+        mapshape = hdul['All events'   ].data[0][1].shape
+        vignmaps = hdul['All events'   ].data
+        vignxoff = hdul['Offset angles'].data['X']
+        vignyoff = hdul['Offset angles'].data['Y']
+
+        return {
+            'vignmaps': vignmaps,
+            'mapshape': mapshape,
+            'xoff'    : vignxoff,
+            'yoff'    : vignyoff
+        }
+
+    def _read_src_arf(self, arffile):
+        hdul  = fits.open(arffile)
+        elow  = hdul[1].data['ENERG_LO']
+        ehigh = hdul[1].data['ENERG_HI']
+        resp  = hdul[1].data['SPECRESP']
+
+        return {
+            'elow'    : elow , 
+            'ehigh'   : ehigh, 
+            'specresp': resp
+        }
+
+    def _calc_detxy(self, telname, evtdata, oridata, ra, dec):
+        evttimes = np.array(evtdata.events.column('TIME'), dtype=np.double)
+
+        evtra    = np.full(shape=evttimes.shape, fill_value=ra , dtype=np.double)
+        evtdec   = np.full(shape=evttimes.shape, fill_value=dec, dtype=np.double)
+
+        detx, dety \
+                 = self._orient.calc_rawxy(
+                    oridata['time'],
+                    oridata['quat'],
+                    evttimes       ,
+                    evtra          ,
+                    evtdec         ,
+                    telname
+                )
+
+        return np.median(detx).astype(int), np.median(dety).astype(int)
+
+    def _calc_offset(self, telname, x, y):
+        telcaldb   = \
+            CaldbTelescope(
+                Caldb(self._caldbdir.get(), telname))
+
+        oapixdist  = np.hypot(
+            float(x) - telcaldb.oaxis()['X'],
+            float(y) - telcaldb.oaxis()['Y'])
+        oaoffset   = oapixdist * self._pix2arcmin
+
+        return oaoffset
+
+    def _make_masks(self, mapshape, xoff, yoff, offset):
+        tolerance = 0.1
+
+        xoff      = Teldef.F * np.tan(np.deg2rad(xoff * self._arcmin2deg))
+        yoff      = Teldef.F * np.tan(np.deg2rad(yoff * self._arcmin2deg))
+
+        cxy       = np.array(np.meshgrid(xoff, yoff)).T.reshape(-1, 2)
+        cx        = cxy.T[0]
+        cy        = cxy.T[1]
+        
+        offsetmap = np.rad2deg(np.arctan(
+            np.hypot(cx, cy) / Teldef.F)) / self._arcmin2deg
+
+        cenmask   = np.abs(offsetmap - 0.    ) <= tolerance
+        offmask   = np.abs(offsetmap - offset) <= tolerance
+
+        return cenmask.reshape(mapshape), offmask.reshape(mapshape)
+
+    def _make_vign_resp(self, vigndata, offset):
+        cenmask, offmask \
+                 = self._make_masks(
+                    vigndata['mapshape'], 
+                    vigndata['xoff'    ], 
+                    vigndata['yoff'    ], 
+                    offset              )
+
+        energies = vigndata['vignmaps']['E'      ]
+        effareas = vigndata['vignmaps']['EFFAREA']
+
+        scales   = []
+        for ea in effareas:
+            scales.append(np.mean(ea[offmask]) / np.mean(ea[cenmask]))
+
+        return energies, scales
+
+    def _make_arf_resp(self, telname, arfdata, vignscale):
+        arfen    = (arfdata['elow'] + arfdata['ehigh']) / 2.
+        arfresp  =  arfdata['specresp'] / 7.
+
+        vignen   = vignscale[0]
+        vignresp = vignscale[1]
+
+        scaled   = np.interp(arfen, vignen, vignresp)
+
+        newresp  = arfresp * scaled
+
+        # --- polycorr ---
+        pcorr    = self.PCORR[telname]
+        newresp  = newresp * np.polyval(pcorr, arfen)
+        # ---
+
+        # --- ecfcorr ---
+        ecf      = np.array(self.ECF_R3[telname])
+        newresp  = newresp * np.interp(arfen, self.EECF, ecf)
+        # ---
+
+        return newresp
+
+    def create(self, events, oridata, srcreg, srcra, srcdec):
+
+        srcarfdata  = self._read_src_arf(self._srcarffile)
+        srcvigndata = self._read_src_vign(self._srcvignfile)
+
+        for telname, evtdata in events:
+            events     = evtdata['events'    ]
+            projection = evtdata['projection']
+
+            detx, dety = self._calc_detxy(
+                telname,
+                events ,
+                oridata,
+                srcra  ,
+                srcdec
+            )
+
+            offset     = self._calc_offset(telname, detx, dety)
+            es, vs     = self._make_vign_resp(srcvigndata, offset)
+            arfresp    = self._make_arf_resp(telname, srcarfdata, (es, vs))
+
+            self._respdata[telname] = arfresp
+            self._respmeta[telname] = {
+                'ra'    : srcra ,
+                'dec'   : srcdec,
+                'detx'  : detx  ,
+                'dety'  : dety  ,
+                'offset': offset
+            }
+
+            logstr = '{}: ra = {}, dec = {}, x = {}, y = {}, offset = {}'.format(
+                    telname, srcra, srcdec, detx, dety, offset
+                )
+
+            print(logstr)
+
+    def _write_resp(self, telname, srcfile, dstfile):
+
+        if not os.path.exists(srcfile):
+            return False
+
+        if telname not in self._respdata:
+            return False
+
+        if os.path.exists(dstfile):
+            os.remove(dstfile)
+
+        shutil.copy(srcfile, dstfile)
+
+        with fits.open(dstfile, mode='update') as hdul:
+            hdul[1].data["SPECRESP"] = self._respdata[telname]
+            hdul.flush()
+
+        return True
+
+    def write(self, dstarf):
+
+        written = {
+            'files': []
+        }
+
+        if not self._make_individual:
+            return written
+
+        for telname in Teldef.telnames:
+            if telname not in self._respdata:
+                continue
+
+            dstarfname = dstarf.format(telname)
+
+            if not self._write_resp(telname, self._srcarffile, dstarfname):
+                continue
+
+            written[telname] = os.path.basename(dstarfname)
+            written['files'].append(dstarfname)
+
+        return written
+
+
+class Rmf(object):
+
+    def __init__(self, caldbpath, make_individual=False):
+
+        self._caldbdir        = Dir(caldbpath)
+        self._make_individual = make_individual
+
+        srcrmfdir   = self._caldbdir / 'ext' / 'rmf'
+        self._srcrmffile  = srcrmfdir.pathfor('artxc_rmf_{}_20191030_v003.rmf')
+
+    def create(self):
+        pass
+
+    def _write_resp(self, telname, srcfile, dstfile):
+        if not os.path.exists(srcfile):
+            return False
+
+        if os.path.exists(dstfile):
+            os.remove(dstfile)
+
+        shutil.copy(srcfile, dstfile)
+
+        return True
+
+    def write(self, dstrmf):
+        written = {
+            'files': []
+        }
+
+        if not self._make_individual:
+            return written
+
+        for telname in Teldef.telnames:
+            srcrmfname = self._srcrmffile.format(telname)
+            dstrmfname = dstrmf.format(telname)
+
+            if not self._write_resp(telname, srcrmfname, dstrmfname):
+                continue
+
+            written[telname] = os.path.basename(dstrmfname)
+            written['files'].append(dstrmfname)
+
+        return written
+
+
+if __name__ == '__main__':
+    pass
--- a/artproducts/src/artproducts/version.py
+++ b/artproducts/src/artproducts/version.py
@@ -0,0 +1 @@
+__version__ = '2.0.0'