src/common/MPulseLengths.cpp

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/********************************************************************\

Name:         MPulseLengths
Created by:   Andrew Edmonds

Contents:     A module to fill a histogram of the pulse lengths from each channel

\********************************************************************/

/* Standard includes */
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <map>
#include <utility>
#include <sstream>

/* MIDAS includes */
#include "midas.h"

/* ROOT includes */
#include <TH2.h>

/* AlCap includes */
#include "TOctalFADCIsland.h"
#include "TOctalFADCBankReader.h"
#include "TGlobalData.h"
#include "TSetupData.h"
#include "TPulseIsland.h"

using std::string;
using std::map;
using std::vector;
using std::pair;

/*-- Module declaration --------------------------------------------*/
INT  MPulseLengths_init(void);
INT  MPulseLengths(EVENT_HEADER*, void*);
double GetClockTickForChannel(string bank_name);

extern HNDLE hDB;
extern TGlobalData* gData;
extern TSetupData* gSetup;

static vector<TOctalFADCBankReader*> fadc_bank_readers;
static TH2I* average_length_histogram;
map <std::string, TH1I*> length_histograms_map;

ANA_MODULE MPulseLengths_module =
{
        "MPulseLengths",                    /* module name           */
        "Andrew Edmonds",              /* author                */
        MPulseLengths,                      /* event routine         */
        NULL,                          /* BOR routine           */
        NULL,                          /* EOR routine           */
        MPulseLengths_init,                 /* init routine          */
        NULL,                          /* exit routine          */
        NULL,                          /* parameter structure   */
        0,                             /* structure size        */
        NULL,                          /* initial parameters    */
};

INT MPulseLengths_init()
{
  // This histogram has the pulse lengths on the X-axis and the number of pulses on the Y-axis
  // One histogram is created for each detector
  
  std::map<std::string, std::string> bank_to_detector_map = gSetup->fBankToDetectorMap;
  for(std::map<std::string, std::string>::iterator mapIter = bank_to_detector_map.begin(); 
      mapIter != bank_to_detector_map.end(); mapIter++) { 

    std::string bankname = mapIter->first;
    std::string detname = gSetup->GetDetectorName(bankname);
    std::string histname = "h" + detname + "_Lengths";
    std::string histtitle = "Plot of the pulse lengths for the " + detname + " detector";
    TH1I* hDetLengths = new TH1I(histname.c_str(), histtitle.c_str(), 100,0,100);
    hDetLengths->GetXaxis()->SetTitle("Pulse Lengths [N Samples]");
    hDetLengths->GetYaxis()->SetTitle("Arbitrary Unit");
    hDetLengths->SetBit(TH1::kCanRebin);

    length_histograms_map[bankname] = hDetLengths;
  }

  std::string histname = "hAvgPulseLengthsPerChannel";
  std::string histtitle = "Plot of the average pulse lengths per event for the each channel";
  average_length_histogram = new TH2I(histname.c_str(), histtitle.c_str(), 1,0,1, 5000,0,5000);
  average_length_histogram->GetXaxis()->SetTitle("Bank Name");
  average_length_histogram->GetYaxis()->SetTitle("MIDAS Event Number");
  average_length_histogram->SetBit(TH1::kCanRebin);

  return SUCCESS;
}

INT MPulseLengths(EVENT_HEADER *pheader, void *pevent)
{
        // Get the event number
        int midas_event_number = pheader->serial_number;

        // Some typedefs
        typedef map<string, vector<TPulseIsland*> > TStringPulseIslandMap;
        typedef pair<string, vector<TPulseIsland*> > TStringPulseIslandPair;
        typedef map<string, vector<TPulseIsland*> >::iterator map_iterator;

        // Fetch a reference to the gData structure that stores a map
        // of (bank_name, vector<TPulseIsland*>) pairs
        TStringPulseIslandMap& pulse_islands_map =
                gData->fPulseIslandToChannelMap;

        // Loop over the map and get each bankname, vector pair
        for (map_iterator theMapIter = pulse_islands_map.begin(); theMapIter != pulse_islands_map.end(); theMapIter++) 
        {
          std::string bankname = theMapIter->first;
          std::vector<TPulseIsland*> thePulses = theMapIter->second;
          
          if (thePulses.size() != 0) {
            // Loop over the TPulseIslands and plot the histogram
            double total_length_of_pulses = 0;
            for (std::vector<TPulseIsland*>::iterator thePulseIter = thePulses.begin(); thePulseIter != thePulses.end(); thePulseIter++) {
              length_histograms_map[bankname]->Fill((*thePulseIter)->GetPulseLength());
              total_length_of_pulses += (*thePulseIter)->GetPulseLength();
            }
            // Fill the histogram
            average_length_histogram->Fill(bankname.c_str(), midas_event_number, total_length_of_pulses / thePulses.size());
          }
        }
        return SUCCESS;
}

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