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// -*- C++ -*-
//
// Package:    EcalLaserAnalyzerYousi
// Class:      EcalLaserAnalyzerYousi
// 
//
// Original Author:  Yousi Ma
//         Created:  Tue Jun 19 23:06:36 CEST 2007
// $Id: EcalLaserAnalyzerYousi.cc,v 1.2 2010/01/18 17:28:44 ferriff Exp $
//
//


// system include files
#include <memory>
#include <iostream>
#include <fstream>


// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDAnalyzer.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "DataFormats/EcalRecHit/interface/EcalUncalibratedRecHit.h"
#include "DataFormats/EcalRecHit/interface/EcalRecHitCollections.h"
#include "DataFormats/EcalDigi/interface/EcalDigiCollections.h"
#include "DataFormats/EcalDigi/interface/EBDataFrame.h"
#include "DataFormats/EcalRawData/interface/EcalRawDataCollections.h"

#include "TFile.h"
#include "TH1F.h"
#include "TH2F.h"
#include "TROOT.h"
#include "TF1.h"
#include "TNtuple.h"
#include "TDirectory.h"



//
// class decleration
//

class EcalLaserAnalyzerYousi : public edm::EDAnalyzer {
   public:
      explicit EcalLaserAnalyzerYousi(const edm::ParameterSet&);
      ~EcalLaserAnalyzerYousi();


   private:
      virtual void beginJob();
      virtual void analyze(const edm::Event&, const edm::EventSetup&);
      virtual void endJob();

      // ----------member data ---------------------------
  // Declare histograms and ROOT trees, etc.
  TH1F *C_APD[1700];
  TH1F *C_APDPN[1700];
  TH1F *C_PN[1700];
  TH1F *C_J[1700];
  TH2F *C_APDPN_J[1700];
  
  TH1F *peakAPD[2];
  TH1F *peakAPDPN[2];
  TH1F *APD_LM[9];
  TH1F *APDPN_LM[9];
  TH2F *APDPN_J_LM[9];
  TH2F *APDPN_J_H[2];
  
  
  //fixme make declare and init separate
  TH2F *APD; 
  TH2F *APD_RMS; 
  TH2F *APDPN; 
  TH2F *APDPN_RMS; 
  TH2F *PN; 
  TH2F *APDPN_J; 
  TH2F *APDPN_C; 
  
  TH1F *FitHist;
  TH2F *Count; 
  
  
  TFile *fPN;
  TFile *fAPD;
  TFile *fROOT;

  TNtuple *C_Tree[1700];

  //parameters

  std::string hitCollection_ ;
  std::string hitProducer_ ;
  //  std::string PNFileName_ ;
  //  std::string ABFileName_ ;
  std::string outFileName_ ;
  std::string SM_ ;
  std::string Run_ ;
  std::string digiProducer_ ;
  std::string PNdigiCollection_ ;


};

//
// constants, enums and typedefs
//

//
// static data member definitions
//

//
// constructors and destructor
//
EcalLaserAnalyzerYousi::EcalLaserAnalyzerYousi(const edm::ParameterSet& iConfig)
{
   //now do what ever initialization is needed
  //get the PN and AB file names
  //get the output file names, digi producers, etc

  hitCollection_ = iConfig.getUntrackedParameter<std::string>("hitCollection");
  hitProducer_ = iConfig.getUntrackedParameter<std::string>("hitProducer");
  //  PNFileName_ = iConfig.getUntrackedParameter<std::string>("PNFileName");
  //  ABFileName_ = iConfig.getUntrackedParameter<std::string>("ABFileName");
  outFileName_ = iConfig.getUntrackedParameter<std::string>("outFileName");
  SM_ = iConfig.getUntrackedParameter<std::string>("SM");
  Run_ = iConfig.getUntrackedParameter<std::string>("Run");
  digiProducer_ = iConfig.getUntrackedParameter<std::string>("digiProducer");
  PNdigiCollection_ = iConfig.getUntrackedParameter<std::string>("PNdigiCollection");




}


EcalLaserAnalyzerYousi::~EcalLaserAnalyzerYousi()
{
 
   // do anything here that needs to be done at desctruction time
   // (e.g. close files, deallocate resources etc.)



}


//
// member functions
//

// ------------ method called to for each event  ------------
void
EcalLaserAnalyzerYousi::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup)
{
   using namespace edm;
  
   //  if ( fPN->IsOpen() ) { edm::LogInfo("EcalLaserAnalyzerYousi") <<"fPN is open in analyze OKAAAAAAAAYYY \n\n"; }



   edm::Handle<EcalRawDataCollection> DCCHeaders;
   iEvent.getByLabel(digiProducer_, DCCHeaders);
 
   EcalDCCHeaderBlock::EcalDCCEventSettings settings = DCCHeaders->begin()->getEventSettings();

   int wavelength = settings.wavelength;

   //   std::cout<<"wavelength: "<<wavelength<<"\n\n";

   if ( wavelength !=0 ) { return; }//only process blue laser

   edm::Handle<EBUncalibratedRecHitCollection> hits;

   try{ 
     iEvent.getByLabel(hitProducer_ , hitCollection_ , hits);
     //     iEvent.getByType(hits);
   } catch ( std::exception& ex ) {
    LogError("EcalLaserAnalyzerYousi") << "Cannot get product:  EBRecHitCollection from: " 
                                    << hitCollection_ << " - returning.\n\n";
    //    return;
   }
   
   edm::Handle<EcalPnDiodeDigiCollection> pndigis;

   try{ 
     //     iEvent.getByLabel(hitProducer_, hits);
          iEvent.getByLabel(digiProducer_, PNdigiCollection_, pndigis);
     //iEvent.getByType( pndigis );
   } catch ( std::exception& ex ) {
    LogError("EcalLaserAnalyzerYousi") << "Cannot get product:  EBdigiCollection from: " 
                                    << "getbytype" << " - returning.\n\n";
    //    return;
   }


   Float_t PN_amp[5];

   //do some averaging over each pair of PNs
   for (int j = 0; j < 5; ++j) {
     PN_amp[j] = 0;
     for (int z = 0; z<2; ++z) {
       FitHist->Reset();
       TF1 peakFit("peakFit", "[0] +[1]*x +[2]*x^2", 30, 50);
       TF1 pedFit("pedFit","[0]",0,5);
       
       for(int k = 0; k < 50; k++){
         FitHist->SetBinContent(k, (*pndigis)[j+z*5].sample(k).adc() );
       }
       pedFit.SetParameter(0,750);
       FitHist->Fit(&pedFit,"RQI");
       Float_t  ped = pedFit.GetParameter(0);
       
       Int_t maxbin = FitHist->GetMaximumBin();
       peakFit.SetRange(FitHist->GetBinCenter(maxbin)-4*FitHist->GetBinWidth(maxbin),
                        FitHist->GetBinCenter(maxbin)+4*FitHist->GetBinWidth(maxbin));
       peakFit.SetParameters(750,4,-.05);
       FitHist->Fit(&peakFit,"RQI");
       Float_t max = peakFit.Eval(-peakFit.GetParameter(1)/(2*peakFit.GetParameter(2)));
       if(ped != max){
         PN_amp[j] = PN_amp[j] + max - ped;
       } else {
         PN_amp[j] = PN_amp[j] + max;
       }
       
     }//end of z loop
     PN_amp[j] = PN_amp[j]/2.0;
   }//end of j loop




   //do some real PN, APD calculations



   //FIXME. previously used .info files to get time, what to do now?
   
   //   TNtuple *Time = new TNtuple("Time", "Time", "Time");
   //   Int_t iTime = Get_Time(Input_File);
   //   Time->Fill(iTime);
   

   Float_t fTree[7];
   

   Int_t cx, cy;
   //   b->GetEntry(EVT);
   EBDetId ID;
   Float_t theAPD;
   Float_t thePN;
   Float_t Jitter;
   Float_t Chi2;
   Int_t CN = hits->size();
   //                   cout<<"num CN: "<<CN<<endl;
   for(int j = 0; j < CN; j++){
     ID = (*hits)[j].id();
     cy = 20-(ID.ic()-1)%20;
     cx = 85-(ID.ic()-1)/20;
     theAPD = (*hits)[j].amplitude();
     Jitter = (*hits)[j].jitter();
     Chi2 = (*hits)[j].chi2();
     thePN = PN_amp[ (ID.ic() + 299)/400 ];
     
     //                                 cout<<"THE APD: "<<theAPD<<endl;
     //                                 cout<<"THE PN: "<<thePN<<endl;
     
     C_APD[ID.ic()-1]->Fill(theAPD);
     C_APDPN[ID.ic()-1]->Fill(theAPD/thePN);
     C_PN[ID.ic()-1]->Fill(thePN);
     C_J[ID.ic()-1]->Fill(Jitter);
     C_APDPN_J[ID.ic()-1]->Fill(Jitter, theAPD/thePN);
     APDPN_J->Fill(Jitter, theAPD/thePN);
     APDPN_C->Fill(Chi2, theAPD/thePN);
     fTree[0] = theAPD;
     fTree[1] = thePN;
     fTree[2] = theAPD/thePN;
     fTree[3] = Jitter;
     fTree[4] = Chi2;
     fTree[5] = (*hits)[j].pedestal();
     fTree[6] = iEvent.id().event();
     C_Tree[ID.ic()-1]->Fill(fTree);
     if(((ID.ic()-1)%20 > 9)||((ID.ic()-1)<100)){
       peakAPD[0]->Fill(theAPD);
       peakAPDPN[0]->Fill(theAPD/thePN);
       APDPN_J_H[0]->Fill(Jitter, theAPD/thePN);
     } else {
       peakAPD[1]->Fill(theAPD);
       peakAPDPN[1]->Fill(theAPD/thePN);
       APDPN_J_H[1]->Fill(Jitter, theAPD/thePN);
     }
     if((ID.ic()-1) < 100){
       APD_LM[0]->Fill(theAPD);
       APDPN_LM[0]->Fill(theAPD/thePN);
       APDPN_J_LM[0]->Fill(Jitter, theAPD/thePN);
     } 
     else {
       Int_t index;
       if(((ID.ic()-1)%20) < 10){ 
         index = ((ID.ic()-101)/400)*2 + 1;
         APD_LM[index]->Fill(theAPD);
         APDPN_LM[index]->Fill(theAPD/thePN);
         APDPN_J_LM[index]->Fill(Jitter, theAPD/thePN);
       }
       else {
         index = ((ID.ic()-101)/400)*2 + 2;
         APD_LM[index]->Fill(theAPD);
         APDPN_LM[index]->Fill(theAPD/thePN);
         APDPN_J_LM[index]->Fill(Jitter, theAPD/thePN);
       }
     }
   }//end of CN loop
   



   //now that you got the PN and APD's, make the ntuples. done

   //vec from ROOT version should correspond to hits_itr or something similar. done

   //check WL from PNdiodedigi, should be ==0, o.w (blue data only). don't process. done

   //get PN pulse, and do fitting of pulse. i.e. fill hist with PN.apd() or equivalent. done

   //fit to first 5 for PED, and 30-50 bins for pulse (poly2 for the moment). done




}


// ------------ method called once each job just before starting event loop  ------------
void 
EcalLaserAnalyzerYousi::beginJob()
{

  edm::LogInfo("EcalLaserAnalyzerYousi") << "running laser analyzer \n\n";

  fROOT = new TFile(outFileName_.c_str(), "RECREATE");
  fROOT->cd();

  //init all the histos and files?
  APD = new TH2F("APD", "APD", 85, 0., 85., 20, 0., 20.);
  APD_RMS = new TH2F("APD_RMS", "APD_RMS", 85, 0., 85., 20, 0., 20.);
  APDPN = new TH2F("APDPN", "APDPN", 85, 0., 85., 20, 0., 20.);
  APDPN_RMS = new TH2F("APDPN_RMS", "APDPN_RMS", 85, 0., 85., 20, 0., 20.);
  PN = new TH2F("PN", "PN", 85, 0., 85., 20, 0., 20.);
  APDPN_J = new TH2F("JittervAPDPN", "JittervAPDPN",250, 3., 7., 250, 1., 2.);
  APDPN_C = new TH2F("Chi2vAPDPN", "Chi2vAPDPN", 250, 0., 50., 250, 0., 5.0); 
  FitHist = new TH1F("FitHist", "FitHist", 50, 0, 50);
  Count = new TH2F("Count", "Count", 85, 0., 1., 20, 0., 1.);


  for(int i = 0; i < 1700; i++){
    std::ostringstream name_1;
    std::ostringstream name_2;
    std::ostringstream name_3;
    std::ostringstream name_4;
    std::ostringstream name_5;
    name_1 << "C_APD_" << i+1;
    name_2 << "C_APDPN_" << i+1;
    name_3 << "C_PN_" << i+1;
    name_4 << "C_J_" << i+1;
    name_5 << "C_APDPN_J_" << i+1;
    C_APD[i] = new TH1F(name_1.str().c_str(), name_1.str().c_str(), 2500, 0., 5000.);
    C_APDPN[i] = new TH1F(name_2.str().c_str(), name_2.str().c_str(), 20000, 0., 25.);
    C_PN[i] = new TH1F(name_3.str().c_str(), name_3.str().c_str(), 1000, 0., 4000.);
    C_J[i] = new TH1F(name_4.str().c_str(), name_4.str().c_str(), 250, 3.0, 7.);
    C_APDPN_J[i] = new TH2F(name_5.str().c_str(), name_5.str().c_str(), 250, 3.0, 6., 250, 1., 2.2);
  }

  for(int i = 0; i < 2; i++){
    std::ostringstream aname_1;
    std::ostringstream aname_2;
    std::ostringstream aname_3;
    aname_1 << "peakAPD_" << i;
    aname_2 << "peakAPDPN_" << i;
    aname_3 << "JittervAPDPN_Half_" << i;
    peakAPD[i] = new TH1F(aname_1.str().c_str(), aname_1.str().c_str(), 1000, 0., 5000.);
    peakAPDPN[i] = new TH1F(aname_2.str().c_str(), aname_2.str().c_str(), 1000, 0., 8.);
    APDPN_J_H[i] = new TH2F(aname_3.str().c_str(), aname_3.str().c_str(), 250, 3., 7., 250, 1., 2.2);
  }
  
  for(int i = 0; i < 9; i++){
    std::ostringstream bname_1;
    std::ostringstream bname_2;
    std::ostringstream bname_3;
    bname_1 << "APD_LM_" << i;
    bname_2 << "APDPN_LM_" << i;
    bname_3 << "APDPN_J_LM_" << i;
    APD_LM[i] = new TH1F(bname_1.str().c_str(), bname_1.str().c_str(), 500, 0., 5000.);
    APDPN_LM[i] = new TH1F(bname_2.str().c_str(), bname_2.str().c_str(), 500, 0., 8.);
    APDPN_J_LM[i] = new TH2F(bname_3.str().c_str(), bname_3.str().c_str(), 250, 3., 7., 250, 1., 2.2);
  }

  //get the PN file. or don't get, and read from event.


  //don't need to get AB, it will be read in via framework poolsource = ???

  //configure the final NTuple
   std::ostringstream varlist;
   varlist << "APD:PN:APDPN:Jitter:Chi2:ped:EVT";
   for(int i = 0; i < 1700; i++){
     std::ostringstream name;
     name << "C_Tree_" << i+1;
     C_Tree[i] = (TNtuple*) new TNtuple(name.str().c_str(), name.str().c_str(),
                                        varlist.str().c_str());
   }

}

// ------------ method called once each job just after ending the event loop  ------------
void 
EcalLaserAnalyzerYousi::endJob() {

  //write the file (get ouput file name first).
  TFile *fROOT = (TFile*) new TFile(outFileName_.c_str(), "RECREATE");
  
  //  TDirectory *DIR = fROOT->Get(Run_.c_str());
  TDirectory *DIR;
  //  if(DIR == NULL){
  DIR = fROOT->mkdir(Run_.c_str());
    //  }
  DIR->cd();
  for(int j = 0; j < 1700; j++){
    Float_t min_r, max_r;
    Float_t RMS, Sigma, K;
    Int_t iCount;
    TF1 *gs1;
    TF1 *gs2;
    TF1 *gs3;
    
    RMS = C_APD[j]->GetRMS();
    APD_RMS->SetBinContent(85-(j/20), 20-(j%20), RMS);
    Sigma = 999999;
    K = 2.5;
    iCount = 0;
    while(Sigma > RMS){
      min_r = C_APD[j]->GetBinCenter(C_APD[j]->GetMaximumBin()) - K*RMS;
      max_r = C_APD[j]->GetBinCenter(C_APD[j]->GetMaximumBin()) + K*RMS;
      gs1 = new TF1("gs1", "gaus", min_r, max_r);
      C_APD[j]->Fit("gs1", "RQI");
      Sigma = gs1->GetParameter(2);
      K = K*1.5;
      iCount++;
      if(iCount > 2){
        C_APD[j]->Fit("gaus", "QI");
        gs1 = C_APD[j]->GetFunction("gaus");
        break;
      }
    }
    
    RMS = C_APDPN[j]->GetRMS();
    APDPN_RMS->SetBinContent(85-(j/20), 20-(j%20), RMS);
    Sigma = 999999;
    K = 2.5;
    iCount = 0;
    while(Sigma > RMS){
      min_r = C_APDPN[j]->GetBinCenter(C_APDPN[j]->GetMaximumBin()) - K*RMS;
      max_r = C_APDPN[j]->GetBinCenter(C_APDPN[j]->GetMaximumBin()) + K*RMS;
      gs2 = new TF1("gs2", "gaus", min_r, max_r);
      C_APDPN[j]->Fit("gs2", "RQI");
      Sigma = gs2->GetParameter(2);
      K = K*1.5;
      iCount++;
      if(iCount > 2){
        C_APDPN[j]->Fit("gaus", "QI");
        gs2 = C_APDPN[j]->GetFunction("gaus");
        break;
      }
    }

    TF1 *newgs1;
    TF1 *newgs2;
    
    C_PN[j]->Fit("gaus", "Q");
    C_APD[j]->Fit("gaus","QI");
    C_APDPN[j]->Fit("gaus","QI");
    C_APD[j]->Write("", TObject::kOverwrite);
    C_APDPN[j]->Write("", TObject::kOverwrite);
    C_PN[j]->Write("", TObject::kOverwrite);
    C_J[j]->Write("", TObject::kOverwrite);
    C_APDPN_J[j]->Write("", TObject::kOverwrite);
    newgs1 = C_APD[j]->GetFunction("gaus");
    newgs2 = C_APDPN[j]->GetFunction("gaus");
    gs3 = C_PN[j]->GetFunction("gaus");
    Float_t theAPD = newgs1->GetParameter(1);
    APD->SetBinContent(85-(j/20), 20-(j%20), theAPD);
    Float_t theAPDPN = newgs2->GetParameter(1);
    APDPN->SetBinContent(85-(j/20), 20-(j%20), theAPDPN);
    Float_t thePN = gs3->GetParameter(1);
    //          cout<<"LOOK HERE thePN = "<< thePN<<endl;
    PN->SetBinContent(85-(j/20), 20-(j%20), thePN);
    C_Tree[j]->Write("", TObject::kOverwrite);
  }
  
  for(int i = 0; i < 9; i++){
    APD_LM[i]->Write("", TObject::kOverwrite);
    APDPN_LM[i]->Write("", TObject::kOverwrite);
    APDPN_J_LM[i]->Write("", TObject::kOverwrite);
  }
  
  
  //  Time->Write("", TObject::kOverwrite);
  APD->Write("", TObject::kOverwrite);
  APD_RMS->Write("", TObject::kOverwrite);
  APDPN_RMS->Write("", TObject::kOverwrite);
  APDPN->Write("", TObject::kOverwrite);
  APDPN_J->Write("", TObject::kOverwrite);
  APDPN_C->Write("", TObject::kOverwrite);
  PN->Write("", TObject::kOverwrite);
  peakAPD[0]->Write("", TObject::kOverwrite);
  peakAPD[1]->Write("", TObject::kOverwrite);
  peakAPDPN[0]->Write("", TObject::kOverwrite);
  peakAPDPN[1]->Write("", TObject::kOverwrite);
  APDPN_J_H[0]->Write("", TObject::kOverwrite);
  APDPN_J_H[1]->Write("", TObject::kOverwrite);
  
  
  
  // don't Make plots
  //  fROOT->Close();
  
//   fPN->Close();
//   fAPD->Close();
  
  
    fROOT->Write();
//   fROOT->Close();

}

//define this as a plug-in
DEFINE_FWK_MODULE(EcalLaserAnalyzerYousi);