JTurbot.cc

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#include <string>
#include <iostream>
#include <iomanip>
#include <limits>
#include <map>
#include <vector>

#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"
#include "TF1.h"
#include "TMath.h"

#include "km3net-dataformat/online/JDAQ.hh"
#include "JDAQ/JDAQEventIO.hh"
#include "JDAQ/JDAQTimesliceIO.hh"
#include "JDAQ/JDAQEvaluator.hh"
#include "JDetector/JDetector.hh"
#include "JDetector/JDetectorToolkit.hh"
#include "JDetector/JDAQHitRouter.hh"
#include "JDetector/JPMTParametersMap.hh"
#include "JTrigger/JBuildL0.hh"
#include "JTrigger/JBuildL1.hh"
#include "JLang/JSinglePointer.hh"
#include "JGizmo/JManager.hh"
#include "JTools/JWeight.hh"
#include "JROOT/JROOTClassSelector.hh"
#include "JSupport/JSingleFileScanner.hh"
#include "JSupport/JTreeScannerInterface.hh"
#include "JSupport/JTreeScanner.hh"
#include "JSupport/JAutoTreeScanner.hh"
#include "JSupport/JSupport.hh"
#include "JSupport/JMeta.hh"

#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"

namespace {

  // status of module

  enum JStatus_t {
    DEFAULT       =  0,      //!< module exists in detector
    NODATA        = -2,      //!< module not present in data or no entries
    OUT_OF_SYNC   = -3,      //!< module is out-of-sync
    ERROR         = -4,      //!< module is out-of-sync, possibly multiple time offsets
    IN_SYNC       = +1       //!< module is in-sync
  };
}

/**
 * \file
 *
 * Example program to search for correlations between triggered events and time slice data.\n
 * 
 * This application can be used to identify optical modules that are out-of-sync with respect to the central White Rabbit clock.\n
 * To this end, time correlations are searched for between triggered events and local coincidences, referred to as L1 hits.
 * The local coincidences are independently obtained from time slice data and can thereby cross the time slice border of a triggered event.\n
 * The QE of the PMTs of the modules that are out-of-sync are set to 0.\n
 * The number of time slices to look for L1 hits away from the triggered event can be set via command line option <tt>-N <number of time slices></tt>.\n
 * The larger this value, the bigger time offsets can be covered. 
 * To identify the modules that are out-of-sync as fast as possible (without determining the time offset), 
 * this value can be set to 0 with the caveat that a out-of-sync occurring during the data taking run maybe missed.
 *
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  using namespace KM3NETDAQ;

  JSingleFileScanner<> inputFile;
  JLimit_t&          numberOfEvents = inputFile.getLimit();
  string             outputFile;
  string             detectorFile;
  double             TMaxLocal_ns;
  string             pmtFile;
  int                numberOfTimeslices;
  double             binWidth_ns;
  double             Pmin;
  JROOTClassSelector selector;
  int                qaqc;
  int                debug;

  try { 

    JParser<> zap("Example program to search for correlations between triggered events and timeslice data.");
    
    zap['f'] = make_field(inputFile,           "input file.");
    zap['o'] = make_field(outputFile,          "optional output file containing ROOT histograms.")         = "";
    zap['a'] = make_field(detectorFile,         "detector file.");
    zap['n'] = make_field(numberOfEvents)      = JLimit::max();
    zap['T'] = make_field(TMaxLocal_ns,        "time window for local coincidences (L1),")                 = 20.0;
    zap['P'] = make_field(pmtFile,             "optional PMT file (to set QE of PMTs).")                   = "";
    zap['N'] = make_field(numberOfTimeslices,  "time slice difference between triggered event and L1.")    = 100;
    zap['W'] = make_field(binWidth_ns,         "bin width for output histograms." )                        = 10e3;
    zap['p'] = make_field(Pmin,                "minimal probability for background to be signal.")         = 1.0e-7;
    zap['C'] = make_field(selector,            "data type selection (default is all).")                    = "", getROOTClassSelection<JDAQTimesliceTypes_t>();
    zap['Q'] = make_field(qaqc)                =  0;
    zap['d'] = make_field(debug)               =  2;

    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }


  cout.tie(&cerr);

  JDetector detector;

  try {
    load(detectorFile, detector);
  }
  catch(const JException& error) {
    FATAL(error);
  }

  if (detector.empty()) {
    FATAL("Empty detector " << detectorFile << endl);
  }
  
  const JDAQHitRouter router(detector);

  const double TMax_ns = max(binWidth_ns, getMaximalTime(detector));

  typedef  double    hit_type;
  
  JBuildL0<hit_type> buildL0;
  JBuildL1<hit_type> buildL1(JBuildL1Parameters(TMaxLocal_ns, true));
  vector  <hit_type> data;  
  
  typedef JManager<int, TH1D>  JManager_t;

  const Double_t xmin = -(numberOfTimeslices + 1) * getFrameTime() - 0.5*binWidth_ns;
  const Double_t xmax = +(numberOfTimeslices + 1) * getFrameTime() + 0.5*binWidth_ns;
  const Int_t    nx   = (Int_t) ((xmax - xmin) / binWidth_ns);
  
  JManager_t manager(new TH1D("M_%", NULL, nx, xmin, xmax));

  JTreeScanner<>::debug = debug;
  
  JSinglePointer< JTreeScannerInterface<JDAQTimeslice> > ps;

  JAutoTreeScanner<JDAQTimeslice> zmap = JType<JDAQTimesliceTypes_t>();
  
  if (selector == "") {

    if ((ps = new JTreeScanner< JAssertConversion<JDAQTimesliceSN, JDAQTimeslice> >(inputFile))->getEntries() != 0 ||
        (ps = new JTreeScanner< JAssertConversion<JDAQTimesliceL2, JDAQTimeslice> >(inputFile))->getEntries() != 0 ||
        (ps = new JTreeScanner< JAssertConversion<JDAQTimesliceL1, JDAQTimeslice> >(inputFile))->getEntries() != 0 ||
        (ps = new JTreeScanner< JAssertConversion<JDAQTimeslice,   JDAQTimeslice> >(inputFile))->getEntries() != 0 ||
        (ps = new JTreeScanner< JAssertConversion<JDAQTimesliceL0, JDAQTimeslice> >(inputFile))->getEntries() != 0) {
    } else {
      FATAL("No timeslice data." << endl);
    }

    NOTICE("Selected class " << ps->getClassName() << endl);

  } else {

    ps = zmap[selector];
    
    ps->configure(inputFile);
  }

  ps->setLimit(inputFile.getLimit());

  typedef map<int, vector<double> > map_type;    // frame index -> event times

  map_type buffer;
    
  for (JTreeScanner<JDAQEvent> in(inputFile.getFilename()); in.hasNext(); ) {

    STATUS("event: " << setw(10) << in.getCounter() << '\r'); DEBUG(endl);

    JDAQEvent* event = in.next();

    // Average time of triggered hits
    
    double t0 = 0.0;
    
    for (JDAQEvent::const_iterator<JDAQTriggeredHit> hit = event->begin<JDAQTriggeredHit>(); hit != event->end<JDAQTriggeredHit>(); ++hit) {
      t0 += getTime(*hit, router.getPMT(*hit));
    }
    
    t0 /= event->size<JDAQTriggeredHit>();
    t0 += event->getFrameIndex() * getFrameTime();
    
    buffer[event->getFrameIndex()].push_back(t0);
  }
  STATUS(endl);
    

  while (ps->hasNext()) {
    
    STATUS("event: " << setw(10) << ps->getCounter() << '\r'); DEBUG(endl);

    JDAQTimeslice* timeslice = ps->next();

    map_type::const_iterator p = buffer.lower_bound(timeslice->getFrameIndex() - numberOfTimeslices);
    map_type::const_iterator q = buffer.upper_bound(timeslice->getFrameIndex() + numberOfTimeslices);

    int number_of_events = 0;

    for (map_type::const_iterator i = p; i != q; ++i) {
      number_of_events += i->second.size();
    }

    if (number_of_events == 0) {
      continue;
    }
    
    for (JDAQTimeslice::const_iterator frame = timeslice->begin(); frame != timeslice->end(); ++frame) {

      data.clear();

      buildL1(*frame, router.getModule(frame->getModuleID()), back_inserter(data));
        
      TH1D* h1 = manager[frame->getModuleID()];
        
      for (vector<hit_type>::const_iterator hit = data.begin(); hit != data.end(); ++hit) {
          
        const double t1 = *hit + frame->getFrameIndex() * getFrameTime();
          
        for (map_type::const_iterator i = p; i != q; ++i) {
          for (map_type::mapped_type::const_iterator j = i->second.begin(); j != i->second.end(); ++j) {
            
            const double t0 = *j;
            
            h1->Fill(t1 - t0);
          }
        }
      }
    }
  }
  STATUS(endl);


  // fit function

  TF1 f1("f1", "[0]*exp(-0.5*(x-[1])*(x-[1])/([2]*[2])) + [3]");
    
  string option = "L";

  if (debug < debug_t) {
    option += "Q";
  }


  map<int, JStatus_t> status;     

  for (JDetector::const_iterator module = detector.begin(); module != detector.end(); ++module) {

    status[module->getID()] = DEFAULT;
    
    JManager_t::iterator p = manager.find(module->getID());

    if (p == manager.end() || p->second->GetEntries() == 0) { 
      
      status[module->getID()] = NODATA;

      continue;
    }

    TH1D* h1 = p->second;

    // start values
          
    Double_t ymax  =   0.0;
    Double_t x0    =   0.0;    // [ns]
    Double_t sigma = 250.0;    // [ns]
    Double_t ymin  =   0.0;
          
    for (int i = 1; i != h1->GetNbinsX(); ++i) {
      
      const Double_t x = h1->GetBinCenter (i);
      const Double_t y = h1->GetBinContent(i);
          
      if (y > ymax) {
        ymax = y;
        x0   = x;
      }

      ymin += y;
    }

    ymin /= h1->GetNbinsX();
        
    f1.SetParameter(0, ymax);
    f1.SetParameter(1, x0);
    if (binWidth_ns < sigma) 
      f1.SetParameter(2, sigma);
    else
      f1.FixParameter(2, binWidth_ns/sqrt(12.0));
    f1.SetParameter(3, ymin);
          
    // fit
    
    h1->Fit(&f1, option.c_str(), "same", x0 - 5 * sigma, x0 + 5 * sigma);


    if (fabs(f1.GetParameter(1)) <= 0.5*getFrameTime() &&    // position
        f1.GetParameter(0)       >= f1.GetParameter(3)) {    // S/N

      status[module->getID()] = IN_SYNC;
    }


    // look for peaks at time offsets equal to a multiple of frame time
          
    map<int, JWeight> bg;    // background
    map<int, JWeight> sn;    // signal(s)

    for (Int_t i = 1, ns = -(numberOfTimeslices + 1); i <= h1->GetNbinsX(); ++i) {

      const Double_t x = h1->GetBinCenter (i);
      const Double_t y = h1->GetBinContent(i);

      while (x > (ns + 1) * getFrameTime() - TMax_ns) { ++ns; }
            
      if      (fabs(x - ns * getFrameTime()) < 1.0  * TMax_ns)
        sn[ns].put(y);
      else if (fabs(x - ns * getFrameTime()) < 10.0 * TMax_ns)
        bg[ns].put(y);
    }

    DEBUG("Module " << setw(8) << module->getID() << endl);

    for (map<int, JWeight>::iterator i = sn.begin(); i != sn.end(); ) {
        
      const Double_t y = bg[i->first].getTotal() * i->second.getCount() / bg[i->first].getCount();
      const Double_t P = TMath::PoissonI(i->second.getTotal(), y);

      DEBUG("Peak at " << setw(4) << i->first << " [frame time] " 
            << "S/N = " 
            << FIXED(7,1) << i->second.getTotal() << " / "
            << FIXED(7,1) << y                    << ' ' 
            << SCIENTIFIC(12,3) << P              << endl);
            
      if (i->second.getTotal() > y && P < Pmin)
        ++i;               // keep
      else
        sn.erase(i++);     // remove
    }

    if (!(sn.size()         == 1 && 
          sn.begin()->first == 0)) {

      ERROR("Module " << setw(8) << module->getID() << " number of peaks " << sn.size() << endl);

      for (map<int, JWeight>::const_iterator i = sn.begin(); i != sn.end(); ++i) {
        ERROR("Peak at " << setw(4) << i->first << " [frame time] "
              << "S/N = " 
              << FIXED(7,1) << i->second.getTotal()                                                     << " / "
              << FIXED(7,1) << bg[i->first].getTotal() * i->second.getCount() / bg[i->first].getCount() << endl);
      }

      status[module->getID()] = (sn.size() == 1 ? OUT_OF_SYNC : ERROR);
    }
  }


  if (pmtFile != "") {

    JPMTParametersMap parameters;
    
    try {
      parameters.load(pmtFile.c_str());
    }
    catch(const JException& error) {}

    for (map<int, JStatus_t>::const_iterator i = status.begin(); i != status.end(); ++i) {

      if (i->second != IN_SYNC) {

        NOTICE("Module " << setw(8) << i->first << " set QEs of all PMTs to zero." << endl);
        
        for (int pmt = 0; pmt != NUMBER_OF_PMTS; ++pmt) {
          parameters[JPMTIdentifier(i->first, pmt)].QE = 0.0;
        }
      }
    }

    ofstream out(pmtFile.c_str());

    parameters.comment.add(JMeta(argc, argv));
    
    out << parameters << endl;

    out.close();
  }

  if (outputFile != "") {
    manager.Write(outputFile.c_str());
  }

  int nin  = 0;
  int nout = 0;

  for (map<int, JStatus_t>::const_iterator i = status.begin(); i != status.end(); ++i) {
    if (i->second == IN_SYNC) {
      ++nin;
    }
    if (i->second != IN_SYNC && 
        i->second != NODATA) {
      ++nout;
    }
  }

  NOTICE("Number of modules out/in sync " << nout << '/' << nin << endl);

  QAQC(nin << ' ' << nout << endl);

  return 0;
}