test_ctpsfcube.py
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#! /usr/bin/env python
# ==========================================================================
# This scripts performs unit tests for the ctpsfcube tool.
#
# Copyright (C) 2014-2020 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 os
import gammalib
import ctools
from testing import test
# ============================= #
# Test class for ctpsfcube tool #
# ============================= #
class Test(test):
"""
Test class for ctpsfcube tool
"""
# Constructor
def __init__(self):
"""
Constructor
"""
# Call base class constructor
test.__init__(self)
# Return
return
# Set test functions
def set(self):
"""
Set all test functions
"""
# Set test name
self.name('ctpsfcube')
# Append tests
self.append(self._test_cmd, 'Test ctpsfcube on command line')
self.append(self._test_python, 'Test ctpsfcube from Python')
# Return
return
# Test ctpsfcube on command line
def _test_cmd(self):
"""
Test ctpsfcube on the command line.
"""
# Set tool name
ctpsfcube = self._tool('ctpsfcube')
# Setup ctpsfcube command
cmd = ctpsfcube+' inobs="'+self._events+'"'+ \
' incube="NONE"'+ \
' outcube="ctpsfcube_cmd1.fits"'+ \
' caldb="'+self._caldb+'" irf="'+self._irf+'"'+ \
' ebinalg="LOG" emin=1.0 emax=100.0 enumbins=5'+ \
' nxpix=20 nypix=20 binsz=0.2'+ \
' coordsys="CEL" proj="CAR" xref=83.63 yref=22.01'+ \
' amax=0.3 anumbins=10'+ \
' logfile="ctpsfcube_cmd1.log" chatter=1'
# Check if execution was successful
self.test_assert(self._execute(cmd) == 0,
'Check successful execution from command line')
# Check result file
self._check_result_file('ctpsfcube_cmd1.fits')
# Setup ctpsfcube command
cmd = ctpsfcube+' inobs="event_file_that_does_not_exist.fits"'+ \
' incube="NONE"'+ \
' outcube="ctpsfcube_cmd2.fits"'+ \
' caldb="'+self._caldb+'" irf="'+self._irf+'"'+ \
' ebinalg="LOG" emin=1.0 emax=100.0 enumbins=5'+ \
' nxpix=20 nypix=20 binsz=0.2'+ \
' coordsys="CEL" proj="CAR" xref=83.63 yref=22.01'+ \
' amax=0.3 anumbins=10'+ \
' logfile="ctpsfcube_cmd2.log" debug=yes chatter=1'
# Check if execution failed
self.test_assert(self._execute(cmd, success=False) != 0,
'Check invalid input file when executed from command line')
# Check ctpsfcube --help
self._check_help(ctpsfcube)
# Return
return
# Test ctpsfcube from Python
def _test_python(self):
"""
Test ctpsfcube from Python
"""
# Allocate ctpsfcube
psfcube = ctools.ctpsfcube()
# Check that empty ctpsfcube tool holds a PSF cube that has no energy
# bins
self._check_cube(psfcube.psfcube(), nenergies=0)
# Check that saving does not nothing
psfcube['outcube'] = 'ctpsfcube_py0.fits'
psfcube['logfile'] = 'ctpsfcube_py0.log'
psfcube.logFileOpen()
psfcube.save()
self.test_assert(not os.path.isfile('ctpsfcube_py0.fits'),
'Check that no PSF cube has been created')
# Check that clearing does not lead to an exception or segfault
psfcube.clear()
# Now set ctpsfcube parameters
psfcube['inobs'] = self._events
psfcube['incube'] = 'NONE'
psfcube['caldb'] = self._caldb
psfcube['irf'] = self._irf
psfcube['ebinalg'] = 'POW'
psfcube['emin'] = 1.0
psfcube['emax'] = 100
psfcube['enumbins'] = 5
psfcube['ebingamma'] = 1.0
psfcube['nxpix'] = 10
psfcube['nypix'] = 10
psfcube['binsz'] = 0.4
psfcube['coordsys'] = 'CEL'
psfcube['proj'] = 'CAR'
psfcube['xref'] = 83.63
psfcube['yref'] = 22.01
psfcube['amax'] = 0.3
psfcube['anumbins'] = 10
psfcube['outcube'] = 'ctpsfcube_py1.fits'
psfcube['logfile'] = 'ctpsfcube_py1.log'
psfcube['chatter'] = 2
# Run ctpsfcube tool
psfcube.logFileOpen() # Make sure we get a log file
psfcube.run()
psfcube.save()
# Check result file
self._check_result_file('ctpsfcube_py1.fits')
# Copy ctpsfcube tool
cpy_psfcube = psfcube.copy()
# Check PSF cube of ctpsfcube copy
self._check_cube(cpy_psfcube.psfcube())
# Execute copy of ctpsfcube tool again, now with a higher chatter
# level than before
cpy_psfcube['emin'] = 0.2
cpy_psfcube['emax'] = 150.0
cpy_psfcube['outcube'] = 'ctpsfcube_py2.fits'
cpy_psfcube['logfile'] = 'ctpsfcube_py2.log'
cpy_psfcube['addbounds'] = True
cpy_psfcube['chatter'] = 3
cpy_psfcube.logFileOpen() # Needed to get a new log file
cpy_psfcube.execute()
# Check result file
self._check_result_file('ctpsfcube_py2.fits', nenergies=8)
# Now clear copy of ctpsfcube tool
cpy_psfcube.clear()
# Check that the cleared copy has also cleared the PSF cube
self._check_cube(cpy_psfcube.psfcube(), nenergies=0)
# Get mixed observation container
obs = self._obs_mixed()
# Set-up ctpsfcube from observation container and input counts
# cube
psfcube = ctools.ctpsfcube(obs)
psfcube['incube'] = self._cntcube
psfcube['caldb'] = self._caldb
psfcube['irf'] = self._irf
psfcube['amax'] = 0.3
psfcube['anumbins'] = 10
psfcube['addbounds'] = True
psfcube['outcube'] = 'ctpsfcube_py3.fits'
psfcube['logfile'] = 'ctpsfcube_py3.log'
psfcube['chatter'] = 4
# Execute ctpsfcube tool
psfcube.logFileOpen() # Make sure we get a log file
psfcube.execute()
# Check result file
self._check_result_file('ctpsfcube_py3.fits')
# Return
return
# Check result file
def _check_result_file(self, filename, nenergies=6):
"""
Check result file
Parameters
----------
filename : str
PSF cube file name
nenergies : int, optional
Number of energy bins
"""
# Open PSF cube
cube = gammalib.GCTACubePsf(filename)
# Check cube
self._check_cube(cube, nenergies=nenergies)
# Return
return
# Check PSF cube
def _check_cube(self, cube, nenergies=6):
"""
Check PSF cube
Parameters
----------
cube : `~gammalib.GCTACubePsf`
PSF cube
nenergies : int, optional
Number of energy bins
"""
# Check dimensions
self.test_value(len(cube.energies()), nenergies,
'Check number of energy maps')
# Return
return