test_ctbin.py
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#! /usr/bin/env python
# ==========================================================================
# This scripts performs unit tests for the ctbin 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 os
import gammalib
import ctools
# ========================= #
# Test class for ctbin tool #
# ========================= #
class Test(gammalib.GPythonTestSuite):
"""
Test class for ctbin tool.
This test class makes unit tests for the ctbin tool by using it from
the command line and from Python.
"""
# Constructor
def __init__(self):
"""
Constructor.
"""
# Call base class constructor
gammalib.GPythonTestSuite.__init__(self)
# Set members
self._events_name = "data/crab_events.fits"
# Return
return
# Set test functions
def set(self):
"""
Set all test functions.
"""
# Set test name
self.name("ctbin")
# Append tests
self.append(self._test_ctbin_cmd, "Test ctbin on command line")
self.append(self._test_ctbin_python, "Test ctbin from Python")
# Return
return
# Test ctbin on command line
def _test_ctbin_cmd(self):
"""
Test ctbin on the command line.
"""
# Set ctbin tool
noout = " &>/dev/null"
ctbin = "../src/ctbin/ctbin"
if os.system("type "+ctbin+noout) != 0:
ctbin = "ctbin"
# Setup ctbin command
cmd = ctbin+' inobs="'+self._events_name+'"'+ \
' outcube="cntmap_cmd1.fits"'+\
' emin=0.1 emax=100.0 enumbins=20 ebinalg="LOG"'+ \
' nxpix=200 nypix=200 binsz=0.02 coordsys="CEL"'+ \
' xref=83.63 yref=22.01 proj="CAR"'+noout
# Execute ctbin, make sure we catch any exception
try:
rc = os.system(cmd)
except:
pass
# Check if execution was successful
self.test_assert(rc == 0,
"Successful ctbin execution on command line")
# Load counts cube and check content.
evt = gammalib.GCTAEventCube("cntmap_cmd1.fits")
self._test_cube(evt, 5542)
# Setup ctbin command
cmd = ctbin+' inobs="events_that_do_not_exist.fits"'+ \
' outcube="cntmap_cmd2.fits"'+\
' emin=0.1 emax=100.0 enumbins=20 ebinalg="LOG"'+ \
' nxpix=200 nypix=200 binsz=0.02 coordsys="CEL"'+ \
' xref=83.63 yref=22.01 proj="CAR"'+noout
# Execute ctbin, make sure we catch any exception
try:
rc = os.system(cmd)
except:
pass
# Check if execution failed
self.test_assert(rc != 0,
"Failure of ctbin execution on command line")
# Return
return
# Test ctbin from Python
def _test_ctbin_python(self):
"""
Test ctbin from Python.
"""
# Set-up ctbin
bin = ctools.ctbin()
bin["inobs"] = self._events_name
bin["outcube"] = "cntmap.fits"
bin["ebinalg"] = "LOG"
bin["emin"] = 0.1
bin["emax"] = 100.0
bin["enumbins"] = 20
bin["nxpix"] = 200
bin["nypix"] = 200
bin["binsz"] = 0.02
bin["coordsys"] = "CEL"
bin["proj"] = "CAR"
bin["xref"] = 83.63
bin["yref"] = 22.01
# Run ctbin tool
bin.run()
# Check content of observation and cube
self._test_observation(bin, 5542)
self._test_cube(bin.cube(), 5542)
# Test copy constructor
cpy_bin = bin.copy()
# Check content of observation and cube
self._test_observation(cpy_bin, 5542)
self._test_cube(cpy_bin.cube(), 5542)
# Run copy of ctbin tool again
cpy_bin.run()
# Check content of observation and cube. We expect now an empty
# event cube as on input the observation is binned, and any binned
# observation will be skipped, hence the counts cube should be
# empty.
self._test_observation(cpy_bin, 0)
self._test_cube(cpy_bin.cube(), 0)
# Clear and run copy of ctbin again
#cpy_bin.clear()
#cpy_bin.run()
#RuntimeError: *** ERROR in GXmlAttribute::value(std::string): Invalid XML attribute value: *** ERROR in GPythonTestSuite::test: <type 'exceptions.RuntimeError'>
#*** ERROR in GApplicationPars::operator[](std::string&): Invalid argument. Parameter "debug" has not been found in parameter file.
#Please specify a valid parameter name.
# Save counts cube
bin.save()
# Load counts cube and check content.
evt = gammalib.GCTAEventCube("cntmap.fits")
self._test_cube(evt, 5542)
# Prepare observation container for stacked analysis
cta = gammalib.GCTAObservation(self._events_name)
obs = gammalib.GObservations()
cta.id("0001")
obs.append(cta)
cta.id("0002")
obs.append(cta)
cta.id("0003")
obs.append(cta)
# Set-up ctbin using an observation container
bin = ctools.ctbin(obs)
bin["outcube"] = "cntmap.fits"
bin["ebinalg"] = "LOG"
bin["emin"] = 0.1
bin["emax"] = 100.0
bin["enumbins"] = 20
bin["nxpix"] = 200
bin["nypix"] = 200
bin["binsz"] = 0.02
bin["coordsys"] = "CEL"
bin["proj"] = "CAR"
bin["xref"] = 83.63
bin["yref"] = 22.01
# Run ctbin tool
bin.run()
# Check content of observation and cube (need multiplier=3 since
# three identical observations have been appended)
self._test_observation(bin, 5542, multiplier=3)
self._test_cube(bin.cube(), 5542, multiplier=3)
# Set-up ctbin using an observation container
bin = ctools.ctbin(obs)
bin["outcube"] = "cntmap2.fits"
bin["ebinalg"] = "LOG"
bin["emin"] = 0.1
bin["emax"] = 100.0
bin["enumbins"] = 20
bin["nxpix"] = 200
bin["nypix"] = 200
bin["binsz"] = 0.02
bin["coordsys"] = "CEL"
bin["proj"] = "CAR"
bin["xref"] = 83.63
bin["yref"] = 22.01
# Execute ctbin tool
bin.execute()
# Load counts cube and check content.
evt = gammalib.GCTAEventCube("cntmap2.fits")
self._test_cube(evt, 5542, multiplier=3)
# Clear tool
#bin.clear()
#what(): *** ERROR in GApplicationPars::write(std::string&): Unable to open parameter file "pfiles/".
# Check content of observation and cube
#self.test_value(bin.obs().size(), 0, "There is no observation")
#self.test_value(bin.cube().size(), 0, "0 event bins")
#self.test_value(bin.cube().number(), 0, "0 events")
# Return
return
# Check observation
def _test_observation(self, ctbin, nevents, multiplier=1):
"""
Test content of an observation.
Args:
ctbin: ctbin instance
nevents: Expected number of events
Kwargs:
multiplier: Observation multiplier
"""
# Test observation container
obs = gammalib.GCTAObservation(ctbin.obs()[0])
pnt = obs.pointing()
self.test_value(ctbin.obs().size(), 1,
"There is one observation")
self.test_assert(obs.instrument() == "CTA",
"Observation is CTA observation")
self.test_value(obs.ontime(), 1800.0*multiplier, 1.0e-6,
"Ontime is 1800 sec")
self.test_value(obs.livetime(), 1710.0*multiplier, 1.0e-6,
"Livetime is 1710 sec")
self.test_value(pnt.dir().ra_deg(), 83.63, 1.0e-6,
"Pointing Right Ascension is 83.63 deg")
self.test_value(pnt.dir().dec_deg(), 22.01, 1.0e-6,
"Pointing Declination is 22.01 deg")
# Test event cube
self._test_cube(obs.events(), nevents, multiplier=multiplier)
# Return
return
# Check event cube
def _test_cube(self, cube, nevents, multiplier=1):
"""
Test content of event cube."
Args:
cube: Event cube
nevents: Expected number of events.
Kwargs:
multiplier: Event number multiplier
"""
# Test event cube
self.test_value(cube.size(), 800000, "800000 event bins")
self.test_value(cube.number(), nevents*multiplier,
str(nevents*multiplier)+" events")
# Return
return