Correct handling of flux for diffuse cube models in csspec (#2954)

Jürgen Knödlseder
1 parent f0bb0f8b
Showing 4 changed files with 15 additions and 2 deletions
ChangeLog
NEWS
cscripts/csspec.py
doc/source/admin/release_history/1.6.2.rst
@@ -4,6 +4,7 @@
         ================================
         Improve documentation and tutorials (#2962)
+        Correct handling of flux for diffuse cube models in csspec (#2954)
         Fix OpenMP issue in ctbin when using energy bounds from file (#2912)
         Fix multi-instrument handling in csbkgmodel (#2862)
@@ -255,7 +255,8 @@ None
 csspec - Generates Spectral Energy Distribution
 -----------------------------------------------
-None
+If a diffuse cube sky model is used the script now correctly multiplies the
+result with the diffuse cube sky model spectrum (#2954).
 cssrcdetect - Detects sources in sky map
@@ -2,7 +2,7 @@
 # ==========================================================================
 # Generates a spectrum.
 #
-# Copyright (C) 2014-2018 Michael Mayer
+# Copyright (C) 2014-2019 Michael Mayer
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -729,6 +729,15 @@ class csspec(ctools.csobservation):
             else:
                 e_flux = 0.0
+            # If the source model is a cube then multiply-in the cube
+            # spectrum
+            if source.spatial().classname() == 'GModelSpatialDiffuseCube':
+                dir          = gammalib.GSkyDir()
+                source.spatial().set_mc_cone(dir, 180.0)
+                norm         = source.spatial().spectrum().eval(elogmean)
+                fitted_flux *= norm
+                e_flux      *= norm
+
             # Convert differential flux and flux error to nuFnu
             elogmean2          = elogmean.MeV() * elogmean.MeV()
             result['flux']     = fitted_flux * elogmean2 * gammalib.MeV2erg
@@ -12,6 +12,8 @@ The following bugs were fixed:
 * [`2962 <https://cta-redmine.irap.omp.eu/issues/2962>`_] -
   Improve documentation and tutorials
+* [`2954 <https://cta-redmine.irap.omp.eu/issues/2954>`_] -
+  Correct handling of flux for diffuse cube models in csspec
 * [`2912 <https://cta-redmine.irap.omp.eu/issues/2912>`_] -
   Fix OpenMP issue in ctbin when using energy bounds from file
 * [`2862 <https://cta-redmine.irap.omp.eu/issues/2862>`_] -