test_ctobssim.py
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#! /usr/bin/env python
# ==========================================================================
# This scripts performs unit tests for the ctobssim tool.
#
# Copyright (C) 2014-2016 Juergen Knoedlseder
#
# 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
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# ==========================================================================
import gammalib
import ctools
# ============================ #
# Test class for ctobssim tool #
# ============================ #
class Test(gammalib.GPythonTestSuite):
"""
Test class for ctobssim tool.
"""
# Constructor
def __init__(self):
"""
Constructor.
"""
# Call base class constructor
gammalib.GPythonTestSuite.__init__(self)
# Set members
self.model_name = "data/crab.xml"
self.caldb = "irf"
self.irf = "cta_dummy_irf"
# Return
return
# Set test functions
def set(self):
"""
Set all test functions.
"""
# Set test name
self.name("ctobssim")
# Append tests
self.append(self.test_functional, "Test ctobssim functionality")
self.append(self.test_container, "Test ctobssim on observation container")
# Return
return
# Test ctobssim functionnality
def test_functional(self):
"""
Test ctobssim functionnality.
"""
# Set-up ctobssim
sim = ctools.ctobssim()
sim["inmodel"] = self.model_name
sim["outevents"] = "events.fits"
sim["caldb"] = self.caldb
sim["irf"] = self.irf
sim["ra"] = 83.63
sim["dec"] = 22.01
sim["rad"] = 10.0
sim["tmin"] = 0.0
sim["tmax"] = 1800.0
sim["emin"] = 0.1
sim["emax"] = 100.0
# Run tool
self.test_try("Run ctobssim")
try:
sim.run()
self.test_try_success()
#except Exception as e:
# msg = "Exception occured in ctobssim: %s." % (e,)
except:
msg = "Exception occured in ctobssim."
self.test_try_failure(msg)
# Retrieve observation and check content
obs = gammalib.GCTAObservation(sim.obs()[0])
pnt = obs.pointing()
evt = obs.events()
self.test_assert(obs.instrument() == "CTA", "Observation not a CTA observation")
self.test_value(sim.obs().size(), 1, "There is not a single observation")
self.test_value(obs.ontime(), 1800.0, 1.0e-6, "Ontime is not 1800 sec")
self.test_value(obs.livetime(), 1710.0, 1.0e-6, "Livetime is not 1710 sec")
self.test_value(pnt.dir().ra_deg(), 83.63, 1.0e-6, "ROI Right Ascension is not 83.63 deg")
self.test_value(pnt.dir().dec_deg(), 22.01, 1.0e-6, "ROI Declination is not 22.01 deg")
self.test_value(evt.size(), 4119, "Number of events is not 4119")
# Save events
self.test_try("Save events")
try:
sim.save()
self.test_try_success()
#except Exception as e:
# msg = "Exception occured in saving events: %s." % (e,)
except:
msg = "Exception occured in saving events."
self.test_try_failure(msg)
# Test ctobssim on observation container
def test_container(self):
"""
Test ctobssim on observation container.
"""
# Set-up observation container
obs = self.set_obs(4)
# Set-up ctobssim
sim = ctools.ctobssim(obs)
sim["outevents"] = "sim_events.xml"
sim["inmodel"] = self.model_name
# Run tool
self.test_try("Run ctobssim")
try:
sim.run()
self.test_try_success()
#except Exception as e:
# msg = "Exception occured in ctobssim: %s." % (e,)
except:
msg = "Exception occured in ctobssim."
self.test_try_failure(msg)
# Retrieve observation and check content
self.test_value(sim.obs().size(), 4, "There are not 4 observations")
# Save events
self.test_try("Save events")
try:
sim.save()
self.test_try_success()
#except Exception as e:
# msg = "Exception occured in saving events: %s." % (e,)
except:
msg = "Exception occured in saving events."
self.test_try_failure(msg)
# Setup observation container
def set_obs(self, number):
"""
Setup observation container.
"""
# Initialise empty observation container
obs = gammalib.GObservations()
# Initialise first time and identifier
tstart = 0.0
offset = -float(number)/2.0
# Loop over number of observations
for i in range(number):
id = "%6.6d" % i
obs_cta = self.set_one_obs(id, offset)
offset += 1.0
tstart += 1830.0
obs.append(obs_cta)
# Return observation container
return obs
# Setup one observation
def set_one_obs(self, id, offset, \
tstart=0.0, duration=1800.0, deadc=0.95, \
emin=0.1, emax=100.0, rad=5.0, \
irf="cta_dummy_irf", caldb="dummy"):
"""
Setup one observation for test purposes.
"""
# Allocate CTA observation
obs_cta = gammalib.GCTAObservation()
# Set calibration database
db = gammalib.GCaldb()
if (gammalib.dir_exists(self.caldb)):
db.rootdir(self.caldb)
else:
db.open("cta", self.caldb)
# Set pointing direction
pntdir = gammalib.GSkyDir()
pntdir.radec_deg(83.63, 22.01+offset)
pnt = gammalib.GCTAPointing()
pnt.dir(pntdir)
obs_cta.pointing(pnt)
# Set ROI
roi = gammalib.GCTARoi()
instdir = gammalib.GCTAInstDir()
instdir.dir(pntdir)
roi.centre(instdir)
roi.radius(rad)
# Set GTI
gti = gammalib.GGti()
gti.append(gammalib.GTime(tstart), gammalib.GTime(tstart+duration))
# Set energy boundaries
ebounds = gammalib.GEbounds(gammalib.GEnergy(emin, "TeV"), \
gammalib.GEnergy(emax, "TeV"))
# Allocate event list
events = gammalib.GCTAEventList()
events.roi(roi)
events.gti(gti)
events.ebounds(ebounds)
obs_cta.events(events)
# Set instrument response
obs_cta.response(self.irf, db)
# Set ontime, livetime, and deadtime correction factor
obs_cta.ontime(duration)
obs_cta.livetime(duration*deadc)
obs_cta.deadc(deadc)
obs_cta.id(id)
# Return CTA observation
return obs_cta