diff --git a/conf/params.py b/uds/config.py
similarity index 100%
rename from conf/params.py
rename to uds/config.py
diff --git a/uds/utils.py b/uds/utils.py
new file mode 100644
index 0000000..ac23e0f
--- /dev/null
+++ b/uds/utils.py
@@ -0,0 +1,40 @@
+import os
+import sys
+import numpy as np
+from astropy.io import fits
+from astropy import wcs
+from astropy.wcs import WCS
+from astropy.io.fits import update
+from astropy.io.fits import getdata
+import glob
+
+from astropy.table import QTable, Table, Column
+from astropy import units as u
+
+from astropy.coordinates import SkyCoord # High-level coordinates
+from astropy.coordinates import ICRS, Galactic, FK4, FK5 # Low-level frames
+from astropy.coordinates import Angle, Latitude, Longitude # Angles
+
+
+import statistics
+import shutil
+
+def create_folder(folder):
+    if not (os.path.exists(folder)):
+        os.makedirs(folder)
+
+def remove_file(filename):
+    if(os.path.isfile(filename)==True):
+        os.remove(filename)            
+
+def do_evtool_esass(events,outfile):
+   cmd=["evtool",
+        "eventfiles=\'{}\'".format((" ").join(events)),
+        "outfile=%s" %(outfile),
+        "image=yes",
+        "flag=0x2000",
+        "pattern=15"
+        ]
+   # run the command
+   print((" ").join(cmd))
+   os.system((" ").join(cmd))