ctbin.cpp
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/***************************************************************************
* ctbin - CTA data binning tool *
* ----------------------------------------------------------------------- *
* copyright (C) 2010-2011 by Jurgen Knodlseder *
* ----------------------------------------------------------------------- *
* *
* 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/**
* @file ctbin.cpp
* @brief CTA data binning tool implementation
* @author J. Knodlseder
*/
/* __ Includes ___________________________________________________________ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include "ctbin.hpp"
#include "GTools.hpp"
/* __ Debug definitions __________________________________________________ */
/* __ Coding definitions _________________________________________________ */
/*==========================================================================
= =
= Constructors/destructors =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Void constructor
***************************************************************************/
ctbin::ctbin(void) : GApplication(CTBIN_NAME, CTBIN_VERSION)
{
// Initialise members
init_members();
// Write header into logger
log_header();
// Return
return;
}
/***********************************************************************//**
* @brief Command line constructor
*
* @param[in] argc Number of arguments in command line.
* @param[in] argv Array of command line arguments.
***************************************************************************/
ctbin::ctbin(int argc, char *argv[]) :
GApplication(CTBIN_NAME, CTBIN_VERSION, argc, argv)
{
// Initialise members
init_members();
// Write header into logger
log_header();
// Return
return;
}
/***********************************************************************//**
* @brief Destructor
***************************************************************************/
ctbin::~ctbin(void)
{
// Free members
free_members();
// Return
return;
}
/*==========================================================================
= =
= Operators =
= =
==========================================================================*/
/*==========================================================================
= =
= Public methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Run gtbin application
***************************************************************************/
void ctbin::run(void)
{
// Get parameters
get_parameters();
// Write parameters into logger
if (logTerse()) {
log_parameters();
log << std::endl;
}
// Bin data
bin();
// Write separator into logger
if (logTerse())
log << std::endl;
// Return
return;
}
/***********************************************************************//**
* @brief Get application parameters
*
* Get all task parameters from parameter file or (if required) by querying
* the user.
***************************************************************************/
void ctbin::get_parameters(void)
{
// Get parameters
m_evfile = par("evfile")->value();
m_outfile = par("outfile")->value();
m_emin = par("emin")->real();
m_emax = par("emax")->real();
m_enumbins = par("enumbins")->integer();
m_proj = par("proj")->value();
m_coordsys = par("coordsys")->value();
m_xref = par("xref")->real();
m_yref = par("yref")->real();
m_binsz = par("binsz")->real();
m_nxpix = par("nxpix")->integer();
m_nypix = par("nypix")->integer();
// Return
return;
}
/***********************************************************************//**
* @brief Bin the data
***************************************************************************/
void ctbin::bin(void)
{
// Load events as unbinned data
GCTAObservation obs;
obs.load_unbinned(m_evfile);
// Setup energy range covered by data
GEnergy emin;
GEnergy emax;
GEbounds ebds;
emin.TeV(m_emin);
emax.TeV(m_emax);
ebds.setlog(emin, emax, m_enumbins);
obs.ebounds(ebds);
// Log observation
if (logTerse()) {
log << std::endl;
log.header1("Observation");
log << obs << std::endl;
}
// Create skymap
GSkymap map = GSkymap(m_proj, m_coordsys,
m_xref, m_yref, m_binsz, m_binsz,
m_nxpix, m_nypix, m_enumbins);
// Initialise binning statistics
int num_outside_map = 0;
int num_outside_ebds = 0;
int num_in_map = 0;
// Fill sky map
GCTAEventList* events = (GCTAEventList*)obs.events();
for (GCTAEventList::iterator event = events->begin(); event != events->end(); ++event) {
// Determine sky pixel
GCTAInstDir* inst = (GCTAInstDir*)&(event->dir());
GSkyDir dir = inst->skydir();
GSkyPixel pixel = map.dir2xy(dir);
// Skip if pixel is out of range
if (pixel.x() < -0.5 || pixel.x() > (m_nxpix-0.5) ||
pixel.y() < -0.5 || pixel.y() > (m_nypix-0.5)) {
num_outside_map++;
continue;
}
// Determine energy bin. Skip if we are outside the energy range
int index = obs.ebounds().index(event->energy());
if (index == -1) {
num_outside_ebds++;
continue;
}
// Fill event in skymap
map(pixel, index) += 1.0;
num_in_map++;
} // endfor: looped over all events
// Log binning results
if (logTerse()) {
log << std::endl;
log.header1("Binning");
log << parformat("Events in list");
log << obs.events()->size() << std::endl;
log << parformat("Events in map");
log << num_in_map << std::endl;
log << parformat("Events outside map area");
log << num_outside_map << std::endl;
log << parformat("Events outside energy bins");
log << num_outside_ebds << std::endl;
}
// Log observation
if (logTerse()) {
log << std::endl;
log.header1("Counts map");
log << map << std::endl;
}
// Save counts map
GFits file;
map.write(&file);
obs.ebounds().write(&file);
obs.gti().write(&file);
file.saveto(m_outfile, clobber());
// Return
return;
}
/*==========================================================================
= =
= Private methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Initialise class members
***************************************************************************/
void ctbin::init_members(void)
{
// Initialise members
m_evfile.clear();
m_outfile.clear();
m_emin = 0.0;
m_emax = 0.0;
m_enumbins = 0;
m_proj.clear();
m_coordsys.clear();
m_xref = 0.0;
m_yref = 0.0;
m_binsz = 0.0;
m_nxpix = 0;
m_nypix = 0;
// Set logger properties
log.date(true);
// Return
return;
}
/***********************************************************************//**
* @brief Delete class members
***************************************************************************/
void ctbin::free_members(void)
{
// Free members
// Return
return;
}