Don't forget to activate environment: `source <MY PATH>/venv/bin/activate`

The script number indicates the sequence of execution. The results are placed in `ridge/products/`.

The corresponding shell scripts run Python code with different parameters.

### 01_bgdmodel.py

Calibrates IBIS/ISGRI background model

### 01_crabmodel.py

Calibrates Crab detector count rate model.

### 02_grxe_resid.py

Calculates difference between detector count rate and that predicted by background model in mCrab units for `GAL` (Galaxy), `BKG` (Extragalactic), or `ALL` (all-sky) regions.

### 02_grxe_map.py

Makes the map of the residuals in mCrab units (not covered in the paper).

### 03_grxe_spec.py

Extract spectrum of selected sky region, e.g.:

```./03_grxe_spec.py GC``` or  ```./03_grxe_spec.py M81```

If you do not specify the sky region, the script makes spectra for all regions.

Sky regions are defined in ```config.py```.

Spectra are stored in `./products/Spec`. After spectra files are ready, go to directory `./products/Spec` and run ```perl ../../scripts/do_pha_igr_v3_mCrab.pl M81.spec```.