production/tdrct/eta_c/track_check.C

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enum DetectorId {
    kDCH,kDRC,kDSK,kEMC,kGEM,kLUMI,kMDT,kMVD,kRPC,kSTT,kTPC,kTOF,kFTS,kHYPG,kHYP};

int track_check(Int_t nEntries = 0)
{
  gROOT->LoadMacro("$VMCWORKDIR/gconfig/rootlogon.C");
  rootlogon();
  TString inPidFile  = "evt_pid_stt.root";
  TString inSimFile = "evt_points_stt.root";

  TFile *inFile = TFile::Open(inSimFile,"READ");

  TTree *tree=(TTree *) inFile->Get("pndsim") ;
  tree->AddFriend("pndsim",inPidFile);

  TClonesArray* cand_array=new TClonesArray("PndPidCandidate");
  tree->SetBranchAddress("PidChargedCand", &cand_array);

  TClonesArray* mc_array=new TClonesArray("PndMCTrack");
  tree->SetBranchAddress("MCTrack", &mc_array);

  TFile *out = TFile::Open("out_test.root","RECREATE");
  TNtuple *nt = new TNtuple("nt","nt","evt:id:mc_p:mc_theta:mc_phi:mc_pid:mc_stt:mc_tpc:mc_mvd:mc_gem:p:theta:phi:mult:stt:tpc:mvd");
  TNtuple *ntEvt = new TNtuple("ntEvt","ntEvt","evt:acc_stt:acc_tpc:eff:effct:cand:mc_phi1:mc_phi2:reco_phi1:reco_phi2:mc_all:reco_all");
  Float_t mass_k = 0.493677;

  if (nEntries==0) nEntries =  tree->GetEntriesFast();
  for (Int_t j=0; j< nEntries; j++){
    tree->GetEntry(j);
    //if (cand_array->GetEntriesFast()==0) continue;
    if ((j%100)==0)    cout << "processing event " << j << "\n";

    Float_t mc_mom = 0, mc_theta = 0, mc_phi = 0;
    Float_t rec_mom = -1, rec_theta = -1, rec_phi = 0;
    Int_t stt_mccount = 0, tpc_mccount = 0,  reco_stt = 0, reco_tpc = 0,reco_mvd = 0, reco_gem = 0, reco_count = 0, reco_ctcount = 0;
    TLorentzVector mc_k[4], reco_k[4], mc_phi1, reco_phi1, mc_phi2, reco_phi2, mc_all, reco_all;
    for (Int_t mc = 0; mc < mc_array->GetEntriesFast(); mc++)
      {
        PndMCTrack *mctrack = (PndMCTrack*)mc_array->At(mc);
        if (mctrack->GetMotherID()!=-1) continue;
        if (mctrack->GetNPoints(kSTT))  stt_mccount++;
        if (mctrack->GetNPoints(kTPC))  tpc_mccount++;
        mc_k[mc] = mctrack->Get4Momentum();
        mc_mom = mctrack->GetMomentum().Mag();
        mc_theta = mctrack->GetMomentum().Theta()*TMath::RadToDeg();
        mc_phi = mctrack->GetMomentum().Phi()*TMath::RadToDeg();
        Int_t mc_pid = mctrack->GetPdgCode();
        Int_t cand_mult = 0;
        for (Int_t pp=0; pp<cand_array->GetEntriesFast(); pp++)
          {
            PndPidCandidate *pidCand = (PndPidCandidate*)cand_array->At(pp);
            if (pidCand->GetMcIndex()!=mc) continue;
            if ( (cand_mult==0) || ((cand_mult>0) && (fabs(rec_mom-mc_mom)> fabs(pidCand->GetMomentum().Mag()-mc_mom))) )
              {
                rec_mom = pidCand->GetMomentum().Mag();
                rec_theta = pidCand->GetMomentum().Theta();
                rec_phi = pidCand->GetMomentum().Phi();
                reco_k[mc].SetXYZM(pidCand->GetMomentum().X(),pidCand->GetMomentum().Y(),pidCand->GetMomentum().Z(),mass_k);
                reco_stt = pidCand->GetSttHits();
                reco_tpc = pidCand->GetTpcHits();
                reco_mvd = pidCand->GetMvdHits();
              }
            cand_mult++;

          } // end of candidate loop

        if (cand_mult>0) reco_count++;
        if ((cand_mult>0) && ((reco_stt>0) || (reco_tpc>0)))  reco_ctcount++;
        Float_t ntuple_nt[] = {
          j,mc, mc_mom,mc_theta,mc_phi, mc_pid,
          mctrack->GetNPoints(kSTT), mctrack->GetNPoints(kTPC), mctrack->GetNPoints(kMVD), mctrack->GetNPoints(kGEM),
          rec_mom, rec_theta*TMath::RadToDeg(), rec_phi*TMath::RadToDeg(), cand_mult, reco_stt, reco_tpc, reco_mvd
        };
        nt->Fill(ntuple_nt);

      } // end of MC loop
    mc_phi1 = mc_k[0] + mc_k[1];
    mc_phi2 = mc_k[2] + mc_k[3];
    reco_phi1 = reco_k[0] + reco_k[1];
    reco_phi2 = reco_k[2] + reco_k[3];
    mc_all = mc_phi1 + mc_phi2;
    reco_all = reco_phi1 + reco_phi2;

    Float_t ntuple_evt[] = {
      j, stt_mccount, tpc_mccount, reco_count,  reco_ctcount,cand_array->GetEntriesFast(),
      mc_phi1.M(), mc_phi2.M(), reco_phi1.M(), reco_phi2.M(), mc_all.M(), reco_all.M()
    };
    ntEvt->Fill(ntuple_evt);


  } // end of event loop

  nt->Draw("mc_theta>>hMcTheta(50,0,100)");
  nt->Draw("mc_theta>>hMcSttTheta(50,0,100)","mc_stt>0");
  nt->Draw("mc_theta>>hMcSttMvdTheta(50,0,100)","(mc_stt>0)||(mc_mvd>0)");
  nt->Draw("mc_theta>>hMcTpcTheta(50,0,100)","mc_tpc>0");
  nt->Draw("mc_theta>>hMcTpcMvdTheta(50,0,100)","(mc_tpc>0)||(mc_tpc>0)");
  nt->Draw("mc_theta>>hMcMvdTheta(50,0,100)","mc_mvd>0");
  nt->Draw("mc_theta>>hMcGemTheta(50,0,100)","mc_gem>0");
  nt->Draw("mc_theta>>hRecoTheta(50,0,100)","mult>0");
  nt->Draw("mc_theta>>hRecoCtTheta(50,0,100)","mult>0&&(stt>0||tpc>0)");
  nt->Draw("mc_theta>>hRecoEffTheta(50,0,100)","mult>0");
  nt->Draw("mc_theta>>hRecoEffCtTheta(50,0,100)","mult>0&&(stt>0||tpc>0)");
  hRecoEffTheta->Divide(hMcTheta);
  hRecoEffCtTheta->Divide(hMcTheta);
  nt->Draw("mc_theta>>hMcAccSttTheta(50,0,100)","mc_stt>0");
  hMcAccSttTheta->Divide(hMcTheta);
  nt->Draw("mc_theta>>hMcAccTpcTheta(50,0,100)","mc_tpc>0");
  hMcAccTpcTheta->Divide(hMcTheta);


  nt->Draw("mc_phi>>hMcPhi(50,-200,200)");
  nt->Draw("mc_phi>>hMcSttPhi(50,-200,200)","mc_stt>0");
  nt->Draw("mc_phi>>hMcSttMvdPhi(50,-200,200)","(mc_stt>0)||(mc_mvd>0)");
  nt->Draw("mc_phi>>hMcTpcPhi(50,-200,200)","mc_tpc>0");
  nt->Draw("mc_phi>>hMcTpcMvdPhi(50,-200,200)","(mc_tpc>0)||(mc_mvd>0)");
  nt->Draw("mc_phi>>hMcMvdPhi(50,-200,200)","mc_mvd>0");
  nt->Draw("mc_phi>>hMcGemPhi(50,-200,200)","mc_gem>0");
  nt->Draw("mc_phi>>hRecoPhi(50,-200,200)","mult>0");
  nt->Draw("mc_phi>>hRecoCtPhi(50,-200,200)","mult>0&&(stt>0||tpc>0)");
  nt->Draw("mc_phi>>hRecoEffPhi(50,-200,200)","mult>0");
  nt->Draw("mc_phi>>hRecoEffCtPhi(50,-200,200)","mult>0&&(stt>0||tpc>0)");
  hRecoEffPhi->Divide(hMcPhi);
  hRecoEffCtPhi->Divide(hMcPhi);
  nt->Draw("mc_phi>>hMcAccSttPhi(50,-200,200)","mc_stt>0");
  hMcAccSttPhi->Divide(hMcPhi);
  nt->Draw("mc_phi>>hMcAccTpcPhi(50,-200,200)","mc_tpc>0");
  hMcAccTpcPhi->Divide(hMcPhi);

  nt->Draw("mc_p>>hMcP(100,0,5)");
  nt->Draw("mc_p>>hMcSttP(100,0,5)","mc_stt>0");
  nt->Draw("mc_p>>hMcSttMvdP(100,0,5)","(mc_stt>0)||(mc_mvd>0)");
  nt->Draw("mc_p>>hMcTpcP(100,0,5)","mc_tpc>0");
  nt->Draw("mc_p>>hMcTpcMvdP(100,0,5)","(mc_tpc>0)||(mc_mvd>0)");
  nt->Draw("mc_p>>hMcMvdP(100,0,5)","mc_mvd>0");
  nt->Draw("mc_p>>hMcGemP(100,0,5)","mc_gem>0");
  nt->Draw("mc_p>>hRecoP(100,0,5)","mult>0");
  nt->Draw("mc_p>>hRecoCtP(100,0,5)","mult>0&&(stt>0||tpc>0)");
  nt->Draw("mc_p>>hRecoEffP(100,0,5)","mult>0");
  nt->Draw("mc_p>>hRecoEffCtP(100,0,5)","mult>0&&(stt>0||tpc>0)");
  hRecoEffP->Divide(hMcP);
  hRecoEffCtP->Divide(hMcP);
  nt->Draw("mc_p>>hMcAccSttP(100,0,5)","mc_stt>0");
  hMcAccSttP->Divide(hMcP);
  nt->Draw("mc_p>>hMcAccTpcP(100,0,5)","mc_tpc>0");
  hMcAccTpcP->Divide(hMcP);

  nt->Draw("(mc_p-p):mc_p>>hresp_p(100,0,5,100,-0.5,0.5)","mult>0");
  nt->Draw("(mc_p-p):mc_theta>>hresp_theta(100,0,100,100,-0.5,0.5)","mult>0","colz");
  nt->Draw("(mc_theta-theta):mc_theta>>hrestheta_theta(100,0,100,100,-2,2)","mult>0");
  nt->Draw("(mc_theta-theta):mc_p>>hrestheta_p(100,0,5,100,-2,2)","mult>0");
  nt->Draw("(mc_phi-phi):mc_phi>>hresphi_phi(100,-200,200,100,-2,2)","mult>0");

  ntEvt->Draw("reco_phi1>>hphi(100,0.95,1.1)","eff==4");
  ntEvt->Draw("reco_phi2>>hphi2(100,0.95,1.1)","eff==4");
  hphi->Add(hphi2);
  ntEvt->Draw("reco_all>>hAll(100,2.5,3.5)","eff==4");
  out->cd();

  nt->Write();
  ntEvt->Write();

  hMcTheta->Write(); hMcSttTheta->Write(); hMcSttMvdTheta->Write(); hMcMvdTheta->Write(); hMcGemTheta->Write(); hRecoTheta->Write();
  hMcTpcTheta->Write(); hMcTpcMvdTheta->Write(); hRecoEffTheta->Write(); hMcAccSttTheta->Write(); hMcAccTpcTheta->Write();
  hMcPhi->Write();   hMcSttPhi->Write();   hMcSttMvdPhi->Write();   hMcMvdPhi->Write();   hMcGemPhi->Write();   hRecoPhi->Write();
  hMcTpcPhi->Write();   hMcTpcMvdPhi->Write();  hRecoEffPhi->Write(); hMcAccSttPhi->Write(); hMcAccTpcPhi->Write();
  hMcP->Write();     hMcSttP->Write();     hMcSttMvdP->Write();     hMcMvdP->Write();     hMcGemP->Write();     hRecoP->Write();
  hMcTpcP->Write();     hMcTpcMvdP->Write(); hRecoEffP->Write();hMcAccSttP->Write(); hMcAccTpcP->Write();
  hRecoCtTheta->Write();
  hRecoCtPhi->Write();
  hRecoCtP->Write();
  hRecoEffCtTheta->Write();
  hRecoEffCtPhi->Write();
  hRecoEffCtP->Write();



  hresp_p->Write();
  hresp_theta->Write();
  hrestheta_theta->Write();
  hrestheta_p->Write();
  hresphi_phi->Write();
  hphi->Write();
  hAll->Write();

  out->Save();

  return 0;
}