/***********************************************************************//**
* @brief Test binned observation handling
***************************************************************************/
void TestGCTAObservation::test_binned_obs(void)
{
// Set filenames
const std::string file1 = "test_cta_obs_binned.xml";
// Declare observations
GObservations obs;
GCTAObservation run;
// Load binned CTA observation
test_try("Load unbinned CTA observation");
try {
run.load_binned(cta_cntmap);
run.response(cta_irf,cta_caldb);
test_try_success();
}
catch (std::exception &e) {
test_try_failure(e);
}
// Test XML loading
test_try("Test XML loading");
try {
obs = GObservations(cta_bin_xml);
obs.save(file1);
test_try_success();
}
catch (std::exception &e) {
test_try_failure(e);
}
// Exit test
return;
}
/***********************************************************************//**
* @brief Test binned optimizer
***************************************************************************/
void TestGCTAOptimize::test_binned_optimizer(void)
{
// Declare observations
GObservations obs;
GCTAObservation run;
// Load binned CTA observation
test_try("Load binned CTA observation");
try {
run.load_binned(cta_cntmap);
run.response(cta_irf,cta_caldb);
obs.append(run);
test_try_success();
}
catch (std::exception &e) {
test_try_failure(e);
}
// Load models from XML file
obs.models(cta_model_xml);
// Perform LM optimization
double fit_results[] = {83.6331, 0,
22.0145, 0,
5.616410411e-16, 1.904730785e-17,
-2.481781246, -0.02580905077,
300000, 0,
1, 0,
2.933677595, 0.06639644824,
6.550723074e-05, 1.945714239e-06,
-1.833781187, -0.0161464076,
1000000, 0,
1, 0};
test_try("Perform LM optimization");
try {
GOptimizerLM opt;
opt.max_iter(100);
obs.optimize(opt);
test_try_success();
for (int i = 0, j = 0; i < obs.models().size(); ++i) {
GModel* model = obs.models()[i];
for (int k = 0; k < model->size(); ++k) {
GModelPar& par = (*model)[k];
std::string msg = "Verify optimization result for " + par.print();
test_value(par.real_value(), fit_results[j++], 5.0e-5, msg);
test_value(par.real_error(), fit_results[j++], 5.0e-5, msg);
}
}
}
catch (std::exception &e) {
test_try_failure(e);
}
// Exit test
return;
}
/***********************************************************************//**
* @brief Setup observation container
*
* @exception GException::no_cube
* No event cube found in CTA observation.
*
* This method sets up the observation container for processing. There are
* two cases:
*
* If there are no observations in the actual observation container, the
* method will check in "infile" parameter. If this parameter is "NONE" or
* empty, the task parameters will be used to construct a model map.
* Otherwise, the method first tries to interpret the "infile" parameter as
* a counts map, and attemps loading of the file in an event cube. If this
* fails, the method tries to interpret the "infile" parameter as an
* observation definition XML file. If this also fails, an exception will
* be thrown.
*
* If observations exist already in the observation container, the method
* will simply keep them.
*
* Test if all CTA observations contain counts maps.
*
* Finally, if no models exist so far in the observation container, the
* models will be loaded from the model XML file.
***************************************************************************/
void ctmodel::setup_obs(void)
{
// If there are no observations in the container then try to build some
if (m_obs.size() == 0) {
// If no input filename has been specified, then create a model map
// from the task parameters
if ((m_infile == "NONE") || (gammalib::strip_whitespace(m_infile) == "")) {
// Set pointing direction
GCTAPointing pnt;
GSkyDir skydir;
skydir.radec_deg(m_ra, m_dec);
pnt.dir(skydir);
// Setup energy range covered by model
GEnergy emin(m_emin, "TeV");
GEnergy emax(m_emax, "TeV");
GEbounds ebds(m_enumbins, emin, emax);
// Setup time interval covered by model
GGti gti;
GTime tmin(m_tmin);
GTime tmax(m_tmax);
gti.append(tmin, tmax);
// Setup skymap
GSkymap map = GSkymap(m_proj, m_coordsys,
m_xref, m_yref, -m_binsz, m_binsz,
m_nxpix, m_nypix, m_enumbins);
// Create model cube from sky map
GCTAEventCube cube(map, ebds, gti);
// Allocate CTA observation
GCTAObservation obs;
// Set CTA observation attributes
obs.pointing(pnt);
obs.ontime(gti.ontime());
obs.livetime(gti.ontime()*m_deadc);
obs.deadc(m_deadc);
// Set event cube in observation
obs.events(cube);
// Append CTA observation to container
m_obs.append(obs);
// Signal that no XML file should be used for storage
m_use_xml = false;
} // endif: created model map from task parameters
// ... otherwise try to load information from the file
else {
// First try to open the file as a counts map
try {
// Allocate CTA observation
GCTAObservation obs;
// Load counts map in CTA observation
obs.load_binned(m_infile);
// Append CTA observation to container
m_obs.append(obs);
// Signal that no XML file should be used for storage
m_use_xml = false;
}
// ... otherwise try to open as XML file
catch (GException::fits_open_error &e) {
// Load observations from XML file. This will throw
// an exception if it fails.
m_obs.load(m_infile);
// Signal that XML file should be used for storage
m_use_xml = true;
}
} // endelse: loaded information from input file
} // endif: there was no observation in the container
// If there are no models associated with the observations then
// load now the model definition from the XML file
if (m_obs.models().size() == 0) {
m_obs.models(GModels(m_srcmdl));
}
// Check if all CTA observations contain an event cube and setup response
// for all observations
for (int i = 0; i < m_obs.size(); ++i) {
// Is this observation a CTA observation?
GCTAObservation* obs = dynamic_cast<GCTAObservation*>(m_obs[i]);
// Yes ...
if (obs != NULL) {
// Throw an exception if this observation does not contain
// an event cube
if (dynamic_cast<const GCTAEventCube*>(obs->events()) == NULL) {
throw GException::no_cube(G_SETUP_OBS);
}
// Set response if it isn't set already
if (obs->response().aeff() == NULL) {
// Set calibration database. If specified parameter is a
// directory then use this as the pathname to the calibration
// database. Otherwise interpret this as the instrument name,
// the mission being "cta"
GCaldb caldb;
if (gammalib::dir_exists(m_caldb)) {
caldb.rootdir(m_caldb);
}
else {
caldb.open("cta", m_caldb);
}
// Set reponse
obs->response(m_irf, caldb);
} // endif: observation already has a response
} // endif: observation was a CTA observation
} // endfor: looped over all observations
// Return
return;
}