[u/mrichter/AliRoot.git] / TPC / AliTPCComparison.C

/****************************************************************************
 *           Very important, delicate and rather obscure macro.             *
 *                                                                          *
 *               Creates list of "trackable" tracks,                        *
 *             calculates efficiency, resolutions etc.                      *
 *     There is a possibility to run this macro over several events.         *
 *                                                                          *
 *           Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch                 *
 * with several nice improvements by: M.Ivanov, GSI, m.ivanov@gsi.de        *
 ****************************************************************************/

#if !defined(__CINT__) || defined(__MAKECINT__)
  #include <TMath.h>
  #include <TError.h>
  #include <Riostream.h>
  #include <TH1F.h>
  #include <TH2F.h>
  #include <TTree.h>
  #include <TParticle.h>
  #include <TPad.h>
  #include <TCanvas.h>
  #include <TLine.h>
  #include <TText.h>
  #include <TBenchmark.h>
  #include <TStyle.h>
  #include <TKey.h>
  #include <TROOT.h>

  #include "AliStack.h"
  #include "AliHeader.h"
  #include "AliTrackReference.h"
  #include "AliRunLoader.h"
  #include "AliMagF.h"
  #include "AliRun.h"
  #include "AliESD.h"

  #include "AliSimDigits.h"
  #include "AliTPC.h"
  #include "AliTPCParamSR.h"
  #include "AliTPCClustersArray.h"
  #include "AliTPCClustersRow.h"
  #include "AliTPCcluster.h"
  #include "AliTPCLoader.h"
#endif

struct GoodTrackTPC {
  Int_t lab;
  Int_t code;
  Float_t px,py,pz;
  Float_t x,y,z;
};

Int_t good_tracks_tpc(GoodTrackTPC *gt, const Int_t max, 
const char* evfoldname=AliConfig::fgkDefaultEventFolderName);

extern AliRun *gAlice;
extern TBenchmark *gBenchmark;
extern TROOT *gROOT;

Int_t AliTPCComparison(const Char_t *dir=".") {
   gBenchmark->Start("AliTPCComparison");

   ::Info("AliTPCComparison.C","Doing comparison...");

   if (gAlice) { 
       delete gAlice->GetRunLoader();
       delete gAlice;//if everything was OK here it is already NULL
       gAlice = 0x0;
    }

   Char_t fname[100];
   sprintf(fname,"%s/galice.root",dir);

   AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
   if (!rl) {
       ::Fatal("AliTPCComparison.C","Can't start session !");
   }

   /* Generate a list of "good" tracks */
   const Int_t MAX=20000;
   GoodTrackTPC gt[MAX];
   Int_t ngood=0;
   sprintf(fname,"%s/good_tracks_tpc",dir);
   ifstream in(fname);
   if (in) {
      ::Info("AliTPCComparison.C","Reading good tracks...");
      while (in>>gt[ngood].lab>>gt[ngood].code>>
                 gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
                 gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
	  ngood++;
	  if (ngood==MAX) {
	    ::Warning("AliTPCComparison.C","Too many good tracks !");
	    break;
	  }	
      }
      if (!in.eof()) 
        ::Fatal("AliTPCComparison.C","Read error (good_tracks_tpc) !");
   } else {
      ::Info
      ("AliTPCComparison","Marking good tracks (this will take a while)...");
      ngood=good_tracks_tpc(gt,MAX,"COMPARISON");
      ofstream out(fname);
      if (out) {
         for (Int_t ngd=0; ngd<ngood; ngd++)            
	    out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
                 gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
                 gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
      } else 
         ::Fatal("AliTPCComparison.C","Can not open file (good_tracks_tpc) !");
      out.close();
   }

   AliESD *event=0;
   { /*Load tracks*/
   sprintf(fname,"%s/AliESDs.root",dir);
   TFile *ef=TFile::Open(fname);
   if ((!ef)||(!ef->IsOpen())) {
      sprintf(fname,"%s/AliESDtpc.root",dir);
      ef=TFile::Open(fname);
      if ((!ef)||(!ef->IsOpen()))
         ::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
   }
   TKey *key=0;
   TIter next(ef->GetListOfKeys());
   if ((key=(TKey*)next())!=0) event=(AliESD*)key->ReadObj();
   ef->Close();
   }
   Int_t nentr=event->GetNumberOfTracks();

   TH1F *hp=(TH1F*)gROOT->FindObject("hp");
   if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.); 
   hp->SetFillColor(4);

   TH1F *hl=(TH1F*)gROOT->FindObject("hl");
   if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
   hl->SetFillColor(4);

   TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
   if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.); 
   hpt->SetFillColor(2);
 
   TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
   if (!hmpt) 
      hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60); 
   hmpt->SetFillColor(6);


   TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
   if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
    
   TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
   if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);

   TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
   if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);

   TH1F *hg=(TH1F*)gROOT->FindObject("hg");
   if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
   hg->SetLineColor(4); hg->SetLineWidth(2);

   TH1F *hf=(TH1F*)gROOT->FindObject("hf");
   if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
   hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);

   TH1F *he=(TH1F*)gROOT->FindObject("he");
   if (!he) 
      he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);

   TH2F *hep=(TH2F*)gROOT->FindObject("hep");
   if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
   hep->SetMarkerStyle(8);
   hep->SetMarkerSize(0.4);

   //MI change
   Int_t mingood=ngood;
   Int_t track_notfound[MAX], itrack_notfound=0;
   Int_t track_fake[MAX], itrack_fake=0;
   Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;

   Int_t i;
   while (ngood--) {
      Int_t lab=gt[ngood].lab,tlab=-1;
      Float_t ptg=
      TMath::Sqrt(gt[ngood].px*gt[ngood].px + gt[ngood].py*gt[ngood].py);

      if (ptg<1e-33) continue; // for those not crossing 0 pad row

      hgood->Fill(ptg);

      AliESDtrack *track=0;
      for (i=0; i<nentr; i++) {
          track=event->GetTrack(i);
          tlab=track->GetLabel();
          if (lab==TMath::Abs(tlab)) break;
      }
      if (i==nentr) {
	track_notfound[itrack_notfound++]=lab;
        continue;
      }
      
      //MI change  - addition
      Int_t micount=0;
      Int_t mi;
      AliESDtrack * mitrack;
      for (mi=0; mi<nentr; mi++) {
	mitrack=event->GetTrack(mi);          
	if (lab==TMath::Abs(mitrack->GetLabel())) micount++;
      }
      if (micount>1) {
	track_multifound[itrack_multifound]=lab;
	track_multifound_n[itrack_multifound]=micount;
	itrack_multifound++;
      }
      
      if (lab==tlab) hfound->Fill(ptg);
      else { 
	track_fake[itrack_fake++]=lab;
	hfake->Fill(ptg); 
      }

      Double_t pxpypz[3]; track->GetInnerPxPyPz(pxpypz);
      Float_t phi=TMath::ATan2(pxpypz[1],pxpypz[0]);
      if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
      if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
      Double_t pt=TMath::Sqrt(pxpypz[0]*pxpypz[0]+pxpypz[1]*pxpypz[1]);
      Float_t lam=TMath::ATan2(pxpypz[2],pt); 
      Float_t pt_1=1/pt;

      if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
         hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
      } else {
         Float_t phig=TMath::ATan2(gt[ngood].py,gt[ngood].px);
         hp->Fill((phi - phig)*1000.);

         Float_t lamg=TMath::ATan2(gt[ngood].pz,ptg);
         hl->Fill((lam - lamg)*1000.);

         hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
      }

      Float_t mom=pt/TMath::Cos(lam);
      Float_t dedx=track->GetTPCsignal();
      hep->Fill(mom,dedx,1.);
      if (TMath::Abs(gt[ngood].code)==211)
	 if (mom>0.4 && mom<0.5) {
            he->Fill(dedx,1.);
         }

   }

   cout<<"\nList of Not found tracks :\n";
   for ( i = 0; i< itrack_notfound; i++){
     cout<<track_notfound[i]<<"\t";
     if ((i%5)==4) cout<<"\n";
   }
   cout<<"\nList of fake  tracks :\n";
   for ( i = 0; i< itrack_fake; i++){
     cout<<track_fake[i]<<"\t";
     if ((i%5)==4) cout<<"\n";
   }
    cout<<"\nList of multiple found tracks :\n";
   for ( i=0; i<itrack_multifound; i++) {
       cout<<"id.   "<<track_multifound[i]
           <<"     found - "<<track_multifound_n[i]<<"times\n";
   }

   Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
   if (ng!=0) cerr<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
   cout<<"Total number of found tracks ="<<nentr<<endl;
   cout<<"Total number of \"good\" tracks ="
       <<mingood<<"   (selected for comparison: "<<ng<<')'<<endl<<endl;


   gStyle->SetOptStat(111110);
   gStyle->SetOptFit(1);

   TCanvas *c1=new TCanvas("c1","",0,0,700,850);

   TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
   p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10); 
   hp->SetFillColor(4);  hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();

   TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw(); 
   p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
   hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();

   TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
   p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10); 
   hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();

   TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
   p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
   hmpt->SetXTitle("(%)"); hmpt->Fit("gaus"); c1->cd();

   TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd(); 
   p5->SetFillColor(41); p5->SetFrameFillColor(10);
   hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
   hg->Divide(hfound,hgood,1,1.,"b");
   hf->Divide(hfake,hgood,1,1.,"b");
   hg->SetMaximum(1.4);
   hg->SetYTitle("Tracking efficiency");
   hg->SetXTitle("Pt (GeV/c)");
   hg->Draw();

   TLine *line1 = new TLine(0.1,1.0,6.1,1.0); line1->SetLineStyle(4);
   line1->Draw("same");
   TLine *line2 = new TLine(0.1,0.9,6.1,0.9); line2->SetLineStyle(4);
   line2->Draw("same");

   hf->SetFillColor(1);
   hf->SetFillStyle(3013);
   hf->SetLineColor(2);
   hf->SetLineWidth(2);
   hf->Draw("histsame");
   TText *text = new TText(0.461176,0.248448,"Fake tracks");
   text->SetTextSize(0.05);
   text->Draw();
   text = new TText(0.453919,1.11408,"Good tracks");
   text->SetTextSize(0.05);
   text->Draw();


   TCanvas *c2=new TCanvas("c2","",320,32,530,590);

   TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
   p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10); 
   he->SetFillColor(2); he->SetFillStyle(3005);  
   he->SetXTitle("Arbitrary Units"); 
   he->Fit("gaus"); c2->cd();

   TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw(); 
   p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
   hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)"); 
   hep->Draw(); c1->cd();

   gBenchmark->Stop("AliTPCComparison");
   gBenchmark->Show("AliTPCComparison");

   delete rl;
   return 0;
}


Int_t 
good_tracks_tpc(GoodTrackTPC *gt, const Int_t max, const char* evfoldname) {
   Int_t nt=0;

   AliRunLoader *rl = AliRunLoader::GetRunLoader(evfoldname);
   if (rl == 0x0) {
      ::Fatal("AliTPCComparison.C::good_tracks_tpc",
              "Can not find Run Loader in Folder Named %s",
              evfoldname);
   }
   AliTPCLoader *tpcl = (AliTPCLoader *)rl->GetLoader("TPCLoader");
   if (tpcl == 0x0) {
       ::Fatal("AliTPCHits2Digits.C","Can not find TPCLoader !");
   }
   
   rl->LoadgAlice();
   
   AliTPC *TPC=(AliTPC*)rl->GetAliRun()->GetDetector("TPC");
   Int_t ver = TPC->IsVersion(); 
   cerr<<"TPC version "<<ver<<" has been found !\n";

   rl->CdGAFile();
   AliTPCParamSR *digp=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
   if (!digp) { 
     ::Fatal("AliTPCHits2Digits.C","TPC parameters have not been found !"); 
   }
   TPC->SetParam(digp);

   rl->LoadHeader();

   Int_t np = rl->GetHeader()->GetNtrack();
      

   Int_t nrow_up=digp->GetNRowUp();
   Int_t nrows=digp->GetNRowLow()+nrow_up;
   Int_t zero=digp->GetZeroSup();
   Int_t gap=Int_t(0.125*nrows), shift=Int_t(0.5*gap);
   Int_t good_number=Int_t(0.4*nrows);

   Int_t *good=new Int_t[np];
   Int_t i;
   for (i=0; i<np; i++) good[i]=0;


   switch (ver) {
   case 1:
     {
      tpcl->LoadRecPoints();      
      AliTPCClustersArray *pca=new AliTPCClustersArray, &ca=*pca;
      ca.Setup(digp);
      ca.SetClusterType("AliTPCcluster");
      ca.ConnectTree(tpcl->TreeR());
      Int_t nrows=Int_t(ca.GetTree()->GetEntries());
      for (Int_t n=0; n<nrows; n++) {
          AliSegmentID *s=ca.LoadEntry(n);
          Int_t sec,row;
          digp->AdjustSectorRow(s->GetID(),sec,row);
          AliTPCClustersRow &clrow = *ca.GetRow(sec,row);
          Int_t ncl=clrow.GetArray()->GetEntriesFast();
          while (ncl--) {
              AliTPCcluster *c=(AliTPCcluster*)clrow[ncl];
              Int_t lab=c->GetLabel(0);
              if (lab<0) continue; //noise cluster
              lab=TMath::Abs(lab);

              if (sec>=digp->GetNInnerSector())
                 if (row==nrow_up-1) good[lab]|=0x4000;
              if (sec>=digp->GetNInnerSector())
                 if (row==nrow_up-1-gap) good[lab]|=0x1000;

              if (sec>=digp->GetNInnerSector())
                 if (row==nrow_up-1-shift) good[lab]|=0x2000;
              if (sec>=digp->GetNInnerSector())
                 if (row==nrow_up-1-gap-shift) good[lab]|=0x800;

              good[lab]++;
          }
          ca.ClearRow(sec,row);
      }
      delete pca;
      tpcl->UnloadRecPoints();
     }
     break;
   case 2:
     {
      tpcl->LoadDigits();
      TTree *TD=tpcl->TreeD();
      
      AliSimDigits da, *digits=&da;
      TD->GetBranch("Segment")->SetAddress(&digits);

      Int_t *count = new Int_t[np];
      Int_t i;
      for (i=0; i<np; i++) count[i]=0;

      Int_t sectors_by_rows=(Int_t)TD->GetEntries();
      for (i=0; i<sectors_by_rows; i++) {
          if (!TD->GetEvent(i)) continue;
          Int_t sec,row;
          digp->AdjustSectorRow(digits->GetID(),sec,row);
          cerr<<sec<<' '<<row<<"                                     \r";
          digits->First();
          do { //Many thanks to J.Chudoba who noticed this
              Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
              Short_t dig = digits->GetDigit(it,ip);
              Int_t idx0=digits->GetTrackID(it,ip,0); 
              Int_t idx1=digits->GetTrackID(it,ip,1);
              Int_t idx2=digits->GetTrackID(it,ip,2);
              if (idx0>=0 && dig>=zero && idx0<np) count[idx0]+=1;
              if (idx1>=0 && dig>=zero && idx1<np) count[idx1]+=1;
              if (idx2>=0 && dig>=zero && idx2<np) count[idx2]+=1;
          } while (digits->Next());
          for (Int_t j=0; j<np; j++) {
              if (count[j]>1) {
                 if (sec>=digp->GetNInnerSector())
		   if (row==nrow_up-1    ) good[j]|=0x4000;
                 if (sec>=digp->GetNInnerSector())
		   if (row==nrow_up-1-gap) good[j]|=0x1000;

                 if (sec>=digp->GetNInnerSector())
		   if (row==nrow_up-1-shift) good[j]|=0x2000;
                 if (sec>=digp->GetNInnerSector())
		   if (row==nrow_up-1-gap-shift) good[j]|=0x800;
                 good[j]++;
              }
              count[j]=0;
          }
      }
      delete[] count;
      tpcl->UnloadDigits();
     }
      break;
   default:
      ::Fatal("AliTPCComparison.C","Invalid TPC version !");
   }

   rl->LoadKinematics();
   AliStack* stack = rl->Stack();
   /** select tracks which are "good" enough **/
   for (i=0; i<np; i++) {
      if ((good[i]&0x5000) != 0x5000)
      if ((good[i]&0x2800) != 0x2800) continue;
      if ((good[i]&0x7FF ) < good_number) continue;

      TParticle *p = (TParticle*)stack->Particle(i);
      if (p == 0x0)
       {
         cerr<<"Can not get particle "<<i<<endl;
         continue;
       }
      if (p->Pt()<0.100) continue;
      if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;

      Double_t vx=p->Vx(),vy=p->Vy();
      if (TMath::Sqrt(vx*vx+vy*vy)>3.5) continue;

      /*
      Int_t j=p->GetFirstMother();
      if (j>=0) {
        TParticle *pp = (TParticle*)stack->Particle(j);
        if (pp == 0x0)
         {
           cerr<<"Can not get particle "<<j<<endl;
           continue;
         }
        //if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
	//  for cascade hyperons only
        Int_t jj=pp->GetFirstMother();
        if (jj>=0) {
          TParticle *ppp = (TParticle*)stack->Particle(jj);
          if (ppp->GetFirstMother()>=0) continue;//two decays are allowed
        }

      }
      */

      gt[nt].lab=i;
      gt[nt].code=p->GetPdgCode();
      gt[nt].px=0.; gt[nt].py=0.; gt[nt].pz=0.;
      gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
      nt++;
      if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
      cerr<<np-i<<"                \r";
   }
   rl->UnloadKinematics();

   /** check if there is also information at the entrance of the TPC **/
   
   rl->LoadTrackRefs();
   TTree *TR=rl->TreeTR();
   TBranch *branch=TR->GetBranch("TPC");
   if (branch==0) {
      ::Fatal("AliTPCComparison.C::good_tracks_tpc","No track references !");
   }
   TClonesArray *references=new TClonesArray("AliTrackReference",1000);
   branch->SetAddress(&references);
   np=(Int_t)TR->GetEntries();
   for (i=0; i<np; i++) {
      references->Clear();
      TR->GetEvent(i);
      Int_t nref=references->GetEntriesFast();
      if (nref==0) continue;
      AliTrackReference *ref=(AliTrackReference*)references->UncheckedAt(0);

      Int_t j, lab=ref->Label();
      for (j=0; j<nt; j++) {if (gt[j].lab==lab) break;}
      if (j==nt) continue;         

      // (px,py,pz) - in global coordinate system, (x,y,z) - in local !
      gt[j].px=ref->Px(); gt[j].py=ref->Py(); gt[j].pz=ref->Pz();
      gt[j].x = ref->LocalX();
      gt[j].y = ref->LocalY();
      gt[j].z = ref->Z();
   }

   delete references;
   delete[] good;
   
   tpcl->UnloadHits();
   rl->UnloadTrackRefs();
   rl->UnloadgAlice();

   gBenchmark->Stop("AliTPCComparison");
   gBenchmark->Show("AliTPCComparison");   
   return nt;
}
Commit	Line	Data
7f6ddf58	1	/****************************************************************************
	2	* Very important, delicate and rather obscure macro. *
	3	* *
	4	* Creates list of "trackable" tracks, *
7f6ddf58	5	* calculates efficiency, resolutions etc. *
bf018fe4	6	* There is a possibility to run this macro over several events. *
7f6ddf58	7	* *
024a7fe9	8	* Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
7f6ddf58	9	* with several nice improvements by: M.Ivanov, GSI, m.ivanov@gsi.de *
	10	****************************************************************************/
	11
c630aafd	12	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
5102bab6	13	#include <TMath.h>
	14	#include <TError.h>
	15	#include <Riostream.h>
	16	#include <TH1F.h>
	17	#include <TH2F.h>
	18	#include <TTree.h>
	19	#include <TParticle.h>
	20	#include <TPad.h>
	21	#include <TCanvas.h>
	22	#include <TLine.h>
	23	#include <TText.h>
	24	#include <TBenchmark.h>
	25	#include <TStyle.h>
	26	#include <TKey.h>
bf018fe4	27	#include <TROOT.h>
5102bab6	28
	29	#include "AliStack.h"
	30	#include "AliHeader.h"
	31	#include "AliTrackReference.h"
88cb7938	32	#include "AliRunLoader.h"
88cb7938	33	#include "AliMagF.h"
c630aafd	34	#include "AliRun.h"
5102bab6	35	#include "AliESD.h"
	36
	37	#include "AliSimDigits.h"
	38	#include "AliTPC.h"
	39	#include "AliTPCParamSR.h"
	40	#include "AliTPCClustersArray.h"
	41	#include "AliTPCClustersRow.h"
bf018fe4	42	#include "AliTPCcluster.h"
5102bab6	43	#include "AliTPCLoader.h"
be9c5115	44	#endif
be9c5115	45
f38c8ae5	46	struct GoodTrackTPC {
cc80f89e	47	Int_t lab;
	48	Int_t code;
	49	Float_t px,py,pz;
	50	Float_t x,y,z;
	51	};
cc80f89e	52
5102bab6	53	Int_t good_tracks_tpc(GoodTrackTPC *gt, const Int_t max,
5102bab6	54	const char* evfoldname=AliConfig::fgkDefaultEventFolderName);
88cb7938	55
c630aafd	56	extern AliRun *gAlice;
5102bab6	57	extern TBenchmark *gBenchmark;
bf018fe4	58	extern TROOT *gROOT;
fbb58996	59
bf018fe4	60	Int_t AliTPCComparison(const Char_t *dir=".") {
5102bab6	61	gBenchmark->Start("AliTPCComparison");
	62
	63	::Info("AliTPCComparison.C","Doing comparison...");
c630aafd	64
c630aafd	65	if (gAlice) {
88cb7938	66	delete gAlice->GetRunLoader();
	67	delete gAlice;//if everything was OK here it is already NULL
	68	gAlice = 0x0;
	69	}
	70
bf018fe4	71	Char_t fname[100];
	72	sprintf(fname,"%s/galice.root",dir);
	73
	74	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
c630aafd	75	if (!rl) {
5102bab6	76	::Fatal("AliTPCComparison.C","Can't start session !");
c630aafd	77	}
7f6ddf58	78
7f6ddf58	79	/* Generate a list of "good" tracks */
5102bab6	80	const Int_t MAX=20000;
f38c8ae5	81	GoodTrackTPC gt[MAX];
cc80f89e	82	Int_t ngood=0;
bf018fe4	83	sprintf(fname,"%s/good_tracks_tpc",dir);
bf018fe4	84	ifstream in(fname);
cc80f89e	85	if (in) {
5102bab6	86	::Info("AliTPCComparison.C","Reading good tracks...");
7f6ddf58	87	while (in>>gt[ngood].lab>>gt[ngood].code>>
be9c5115	88	gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
be9c5115	89	gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
7ac477db	90	ngood++;
7ac477db	91	if (ngood==MAX) {
5102bab6	92	::Warning("AliTPCComparison.C","Too many good tracks !");
7ac477db	93	break;
7ac477db	94	}
cc80f89e	95	}
5102bab6	96	if (!in.eof())
5102bab6	97	::Fatal("AliTPCComparison.C","Read error (good_tracks_tpc) !");
cc80f89e	98	} else {
5102bab6	99	::Info
5102bab6	100	("AliTPCComparison","Marking good tracks (this will take a while)...");
88cb7938	101	ngood=good_tracks_tpc(gt,MAX,"COMPARISON");
bf018fe4	102	ofstream out(fname);
cc80f89e	103	if (out) {
cc80f89e	104	for (Int_t ngd=0; ngd<ngood; ngd++)
7f6ddf58	105	out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
be9c5115	106	gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
be9c5115	107	gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
5102bab6	108	} else
5102bab6	109	::Fatal("AliTPCComparison.C","Can not open file (good_tracks_tpc) !");
cc80f89e	110	out.close();
cc80f89e	111	}
7f6ddf58	112
bf018fe4	113	AliESD *event=0;
3cb3ee52	114	{ /Load tracks/
bf018fe4	115	sprintf(fname,"%s/AliESDs.root",dir);
bf018fe4	116	TFile *ef=TFile::Open(fname);
5102bab6	117	if ((!ef)\|\|(!ef->IsOpen())) {
bf018fe4	118	sprintf(fname,"%s/AliESDtpc.root",dir);
	119	ef=TFile::Open(fname);
	120	if ((!ef)\|\|(!ef->IsOpen()))
	121	::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
5102bab6	122	}
	123	TKey *key=0;
	124	TIter next(ef->GetListOfKeys());
bf018fe4	125	if ((key=(TKey)next())!=0) event=(AliESD)key->ReadObj();
5102bab6	126	ef->Close();
3cb3ee52	127	}
bf018fe4	128	Int_t nentr=event->GetNumberOfTracks();
	129
	130	TH1F hp=(TH1F)gROOT->FindObject("hp");
	131	if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
	132	hp->SetFillColor(4);
	133
	134	TH1F hl=(TH1F)gROOT->FindObject("hl");
	135	if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
	136	hl->SetFillColor(4);
	137
	138	TH1F hpt=(TH1F)gROOT->FindObject("hpt");
	139	if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
	140	hpt->SetFillColor(2);
	141
	142	TH1F hmpt=(TH1F)gROOT->FindObject("hmpt");
	143	if (!hmpt)
	144	hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
cc80f89e	145	hmpt->SetFillColor(6);
8c555625	146
bf018fe4	147
	148
	149	TH1F hgood=(TH1F)gROOT->FindObject("hgood");
	150	if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
	151
	152	TH1F hfound=(TH1F)gROOT->FindObject("hfound");
	153	if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
	154
	155	TH1F hfake=(TH1F)gROOT->FindObject("hfake");
	156	if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
	157
	158	TH1F hg=(TH1F)gROOT->FindObject("hg");
	159	if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
8c555625	160	hg->SetLineColor(4); hg->SetLineWidth(2);
bf018fe4	161
	162	TH1F hf=(TH1F)gROOT->FindObject("hf");
	163	if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
8c555625	164	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
8c555625	165
bf018fe4	166	TH1F he=(TH1F)gROOT->FindObject("he");
	167	if (!he)
	168	he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
	169
	170	TH2F hep=(TH2F)gROOT->FindObject("hep");
	171	if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
be9c5115	172	hep->SetMarkerStyle(8);
be9c5115	173	hep->SetMarkerSize(0.4);
8c555625	174
7f6ddf58	175	//MI change
	176	Int_t mingood=ngood;
	177	Int_t track_notfound[MAX], itrack_notfound=0;
	178	Int_t track_fake[MAX], itrack_fake=0;
	179	Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;
cf98c13f	180
bf018fe4	181	Int_t i;
cc80f89e	182	while (ngood--) {
cf98c13f	183	Int_t lab=gt[ngood].lab,tlab=-1;
cc80f89e	184	Float_t ptg=
cc80f89e	185	TMath::Sqrt(gt[ngood].pxgt[ngood].px + gt[ngood].pygt[ngood].py);
8c555625	186
7f6ddf58	187	if (ptg<1e-33) continue; // for those not crossing 0 pad row
b9de75e1	188
8c555625	189	hgood->Fill(ptg);
cc80f89e	190
bf018fe4	191	AliESDtrack *track=0;
7f6ddf58	192	for (i=0; i<nentr; i++) {
bf018fe4	193	track=event->GetTrack(i);
73042f01	194	tlab=track->GetLabel();
cc80f89e	195	if (lab==TMath::Abs(tlab)) break;
8c555625	196	}
7f6ddf58	197	if (i==nentr) {
cf98c13f	198	track_notfound[itrack_notfound++]=lab;
cc80f89e	199	continue;
cc80f89e	200	}
cf98c13f	201
	202	//MI change - addition
	203	Int_t micount=0;
	204	Int_t mi;
bf018fe4	205	AliESDtrack * mitrack;
7f6ddf58	206	for (mi=0; mi<nentr; mi++) {
bf018fe4	207	mitrack=event->GetTrack(mi);
cf98c13f	208	if (lab==TMath::Abs(mitrack->GetLabel())) micount++;
	209	}
	210	if (micount>1) {
cf98c13f	211	track_multifound[itrack_multifound]=lab;
	212	track_multifound_n[itrack_multifound]=micount;
	213	itrack_multifound++;
	214	}
	215
cc80f89e	216	if (lab==tlab) hfound->Fill(ptg);
cf98c13f	217	else {
	218	track_fake[itrack_fake++]=lab;
	219	hfake->Fill(ptg);
cf98c13f	220	}
cc80f89e	221
bf018fe4	222	Double_t pxpypz[3]; track->GetInnerPxPyPz(pxpypz);
bf018fe4	223	Float_t phi=TMath::ATan2(pxpypz[1],pxpypz[0]);
be9c5115	224	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
be9c5115	225	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
bf018fe4	226	Double_t pt=TMath::Sqrt(pxpypz[0]pxpypz[0]+pxpypz[1]pxpypz[1]);
	227	Float_t lam=TMath::ATan2(pxpypz[2],pt);
	228	Float_t pt_1=1/pt;
cc80f89e	229
cc80f89e	230	if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
be9c5115	231	hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
cc80f89e	232	} else {
cc80f89e	233	Float_t phig=TMath::ATan2(gt[ngood].py,gt[ngood].px);
cc80f89e	234	hp->Fill((phi - phig)*1000.);
3c0f9266	235
cc80f89e	236	Float_t lamg=TMath::ATan2(gt[ngood].pz,ptg);
cc80f89e	237	hl->Fill((lam - lamg)*1000.);
cc80f89e	238
be9c5115	239	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
cc80f89e	240	}
73042f01	241
bf018fe4	242	Float_t mom=pt/TMath::Cos(lam);
bf018fe4	243	Float_t dedx=track->GetTPCsignal();
cc80f89e	244	hep->Fill(mom,dedx,1.);
	245	if (TMath::Abs(gt[ngood].code)==211)
	246	if (mom>0.4 && mom<0.5) {
	247	he->Fill(dedx,1.);
	248	}
73042f01	249
cc80f89e	250	}
cc80f89e	251
cf98c13f	252	cout<<"\nList of Not found tracks :\n";
cf98c13f	253	for ( i = 0; i< itrack_notfound; i++){
	254	cout<<track_notfound[i]<<"\t";
	255	if ((i%5)==4) cout<<"\n";
	256	}
	257	cout<<"\nList of fake tracks :\n";
	258	for ( i = 0; i< itrack_fake; i++){
	259	cout<<track_fake[i]<<"\t";
	260	if ((i%5)==4) cout<<"\n";
	261	}
	262	cout<<"\nList of multiple found tracks :\n";
	263	for ( i=0; i<itrack_multifound; i++) {
7f6ddf58	264	cout<<"id. "<<track_multifound[i]
7f6ddf58	265	<<" found - "<<track_multifound_n[i]<<"times\n";
cf98c13f	266	}
8c555625	267
7f6ddf58	268	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
	269	if (ng!=0) cerr<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
	270	cout<<"Total number of found tracks ="<<nentr<<endl;
	271	cout<<"Total number of \"good\" tracks ="
	272	<<mingood<<" (selected for comparison: "<<ng<<')'<<endl<<endl;
	273
	274
8c555625	275	gStyle->SetOptStat(111110);
	276	gStyle->SetOptFit(1);
	277
	278	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	279
	280	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
	281	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
	282	hp->SetFillColor(4); hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();
	283
	284	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	285	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
	286	hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();
	287
	288	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
	289	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
	290	hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();
	291
	292	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
	293	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
cc80f89e	294	hmpt->SetXTitle("(%)"); hmpt->Fit("gaus"); c1->cd();
8c555625	295
8c555625	296	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
3c0f9266	297	p5->SetFillColor(41); p5->SetFrameFillColor(10);
8c555625	298	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
	299	hg->Divide(hfound,hgood,1,1.,"b");
	300	hf->Divide(hfake,hgood,1,1.,"b");
	301	hg->SetMaximum(1.4);
	302	hg->SetYTitle("Tracking efficiency");
	303	hg->SetXTitle("Pt (GeV/c)");
	304	hg->Draw();
	305
7f6ddf58	306	TLine *line1 = new TLine(0.1,1.0,6.1,1.0); line1->SetLineStyle(4);
8c555625	307	line1->Draw("same");
7f6ddf58	308	TLine *line2 = new TLine(0.1,0.9,6.1,0.9); line2->SetLineStyle(4);
8c555625	309	line2->Draw("same");
	310
	311	hf->SetFillColor(1);
	312	hf->SetFillStyle(3013);
	313	hf->SetLineColor(2);
	314	hf->SetLineWidth(2);
	315	hf->Draw("histsame");
	316	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	317	text->SetTextSize(0.05);
	318	text->Draw();
	319	text = new TText(0.453919,1.11408,"Good tracks");
	320	text->SetTextSize(0.05);
	321	text->Draw();
3c0f9266	322
	323
	324
	325	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	326
	327	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	328	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	329	he->SetFillColor(2); he->SetFillStyle(3005);
	330	he->SetXTitle("Arbitrary Units");
	331	he->Fit("gaus"); c2->cd();
	332
	333	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	334	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	335	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	336	hep->Draw(); c1->cd();
	337
cf98c13f	338	gBenchmark->Stop("AliTPCComparison");
	339	gBenchmark->Show("AliTPCComparison");
	340
88cb7938	341	delete rl;
73042f01	342	return 0;
cc80f89e	343	}
3c0f9266	344
cc80f89e	345
c630aafd	346	Int_t
c630aafd	347	good_tracks_tpc(GoodTrackTPC gt, const Int_t max, const char evfoldname) {
7f6ddf58	348	Int_t nt=0;
cc80f89e	349
c630aafd	350	AliRunLoader *rl = AliRunLoader::GetRunLoader(evfoldname);
c630aafd	351	if (rl == 0x0) {
88cb7938	352	::Fatal("AliTPCComparison.C::good_tracks_tpc",
	353	"Can not find Run Loader in Folder Named %s",
	354	evfoldname);
c630aafd	355	}
	356	AliTPCLoader tpcl = (AliTPCLoader )rl->GetLoader("TPCLoader");
	357	if (tpcl == 0x0) {
5102bab6	358	::Fatal("AliTPCHits2Digits.C","Can not find TPCLoader !");
c630aafd	359	}
88cb7938	360
	361	rl->LoadgAlice();
	362
	363	AliTPC TPC=(AliTPC)rl->GetAliRun()->GetDetector("TPC");
73042f01	364	Int_t ver = TPC->IsVersion();
	365	cerr<<"TPC version "<<ver<<" has been found !\n";
	366
88cb7938	367	rl->CdGAFile();
88cb7938	368	AliTPCParamSR digp=(AliTPCParamSR)gDirectory->Get("75x40_100x60_150x60");
5102bab6	369	if (!digp) {
	370	::Fatal("AliTPCHits2Digits.C","TPC parameters have not been found !");
	371	}
73042f01	372	TPC->SetParam(digp);
73042f01	373
88cb7938	374	rl->LoadHeader();
	375
	376	Int_t np = rl->GetHeader()->GetNtrack();
	377
024a7fe9	378
73042f01	379	Int_t nrow_up=digp->GetNRowUp();
	380	Int_t nrows=digp->GetNRowLow()+nrow_up;
	381	Int_t zero=digp->GetZeroSup();
7f6ddf58	382	Int_t gap=Int_t(0.125nrows), shift=Int_t(0.5gap);
cc80f89e	383	Int_t good_number=Int_t(0.4*nrows);
cc80f89e	384
7f6ddf58	385	Int_t *good=new Int_t[np];
	386	Int_t i;
	387	for (i=0; i<np; i++) good[i]=0;
	388
	389
	390	switch (ver) {
	391	case 1:
	392	{
88cb7938	393	tpcl->LoadRecPoints();
7f6ddf58	394	AliTPCClustersArray pca=new AliTPCClustersArray, &ca=pca;
	395	ca.Setup(digp);
	396	ca.SetClusterType("AliTPCcluster");
88cb7938	397	ca.ConnectTree(tpcl->TreeR());
7f6ddf58	398	Int_t nrows=Int_t(ca.GetTree()->GetEntries());
	399	for (Int_t n=0; n<nrows; n++) {
	400	AliSegmentID *s=ca.LoadEntry(n);
	401	Int_t sec,row;
	402	digp->AdjustSectorRow(s->GetID(),sec,row);
	403	AliTPCClustersRow &clrow = *ca.GetRow(sec,row);
	404	Int_t ncl=clrow.GetArray()->GetEntriesFast();
	405	while (ncl--) {
	406	AliTPCcluster c=(AliTPCcluster)clrow[ncl];
	407	Int_t lab=c->GetLabel(0);
	408	if (lab<0) continue; //noise cluster
	409	lab=TMath::Abs(lab);
	410
	411	if (sec>=digp->GetNInnerSector())
	412	if (row==nrow_up-1) good[lab]\|=0x4000;
	413	if (sec>=digp->GetNInnerSector())
	414	if (row==nrow_up-1-gap) good[lab]\|=0x1000;
	415
	416	if (sec>=digp->GetNInnerSector())
	417	if (row==nrow_up-1-shift) good[lab]\|=0x2000;
	418	if (sec>=digp->GetNInnerSector())
	419	if (row==nrow_up-1-gap-shift) good[lab]\|=0x800;
	420
	421	good[lab]++;
	422	}
	423	ca.ClearRow(sec,row);
	424	}
	425	delete pca;
88cb7938	426	tpcl->UnloadRecPoints();
7f6ddf58	427	}
afc42102	428	break;
7f6ddf58	429	case 2:
7f6ddf58	430	{
88cb7938	431	tpcl->LoadDigits();
	432	TTree *TD=tpcl->TreeD();
	433
7f6ddf58	434	AliSimDigits da, *digits=&da;
	435	TD->GetBranch("Segment")->SetAddress(&digits);
	436
	437	Int_t *count = new Int_t[np];
	438	Int_t i;
	439	for (i=0; i<np; i++) count[i]=0;
	440
	441	Int_t sectors_by_rows=(Int_t)TD->GetEntries();
	442	for (i=0; i<sectors_by_rows; i++) {
	443	if (!TD->GetEvent(i)) continue;
	444	Int_t sec,row;
	445	digp->AdjustSectorRow(digits->GetID(),sec,row);
	446	cerr<<sec<<' '<<row<<" \r";
	447	digits->First();
	448	do { //Many thanks to J.Chudoba who noticed this
	449	Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
	450	Short_t dig = digits->GetDigit(it,ip);
	451	Int_t idx0=digits->GetTrackID(it,ip,0);
	452	Int_t idx1=digits->GetTrackID(it,ip,1);
	453	Int_t idx2=digits->GetTrackID(it,ip,2);
8ded1b7a	454	if (idx0>=0 && dig>=zero && idx0<np) count[idx0]+=1;
	455	if (idx1>=0 && dig>=zero && idx1<np) count[idx1]+=1;
	456	if (idx2>=0 && dig>=zero && idx2<np) count[idx2]+=1;
afc42102	457	} while (digits->Next());
7f6ddf58	458	for (Int_t j=0; j<np; j++) {
	459	if (count[j]>1) {
	460	if (sec>=digp->GetNInnerSector())
	461	if (row==nrow_up-1 ) good[j]\|=0x4000;
	462	if (sec>=digp->GetNInnerSector())
	463	if (row==nrow_up-1-gap) good[j]\|=0x1000;
	464
	465	if (sec>=digp->GetNInnerSector())
	466	if (row==nrow_up-1-shift) good[j]\|=0x2000;
	467	if (sec>=digp->GetNInnerSector())
	468	if (row==nrow_up-1-gap-shift) good[j]\|=0x800;
	469	good[j]++;
	470	}
	471	count[j]=0;
	472	}
	473	}
	474	delete[] count;
88cb7938	475	tpcl->UnloadDigits();
afc42102	476	}
7f6ddf58	477	break;
7f6ddf58	478	default:
5102bab6	479	::Fatal("AliTPCComparison.C","Invalid TPC version !");
cc80f89e	480	}
7f6ddf58	481
88cb7938	482	rl->LoadKinematics();
88cb7938	483	AliStack* stack = rl->Stack();
7f6ddf58	484	/ select tracks which are "good" enough /
	485	for (i=0; i<np; i++) {
	486	if ((good[i]&0x5000) != 0x5000)
	487	if ((good[i]&0x2800) != 0x2800) continue;
	488	if ((good[i]&0x7FF ) < good_number) continue;
	489
88cb7938	490	TParticle p = (TParticle)stack->Particle(i);
	491	if (p == 0x0)
	492	{
	493	cerr<<"Can not get particle "<<i<<endl;
	494	continue;
	495	}
7f6ddf58	496	if (p->Pt()<0.100) continue;
	497	if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
	498
bf018fe4	499	Double_t vx=p->Vx(),vy=p->Vy();
	500	if (TMath::Sqrt(vxvx+vyvy)>3.5) continue;
	501
	502	/*
7f6ddf58	503	Int_t j=p->GetFirstMother();
7f6ddf58	504	if (j>=0) {
88cb7938	505	TParticle pp = (TParticle)stack->Particle(j);
	506	if (pp == 0x0)
	507	{
	508	cerr<<"Can not get particle "<<j<<endl;
	509	continue;
	510	}
bf018fe4	511	//if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
bf018fe4	512	// for cascade hyperons only
024a7fe9	513	Int_t jj=pp->GetFirstMother();
024a7fe9	514	if (jj>=0) {
88cb7938	515	TParticle ppp = (TParticle)stack->Particle(jj);
024a7fe9	516	if (ppp->GetFirstMother()>=0) continue;//two decays are allowed
024a7fe9	517	}
bf018fe4	518
7f6ddf58	519	}
bf018fe4	520	*/
7f6ddf58	521
	522	gt[nt].lab=i;
	523	gt[nt].code=p->GetPdgCode();
	524	gt[nt].px=0.; gt[nt].py=0.; gt[nt].pz=0.;
527abbe9	525	gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
7f6ddf58	526	nt++;
	527	if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
	528	cerr<<np-i<<" \r";
	529	}
88cb7938	530	rl->UnloadKinematics();
7f6ddf58	531
7f6ddf58	532	/ check if there is also information at the entrance of the TPC /
88cb7938	533
5102bab6	534	rl->LoadTrackRefs();
	535	TTree *TR=rl->TreeTR();
	536	TBranch *branch=TR->GetBranch("TPC");
	537	if (branch==0) {
	538	::Fatal("AliTPCComparison.C::good_tracks_tpc","No track references !");
	539	}
	540	TClonesArray *references=new TClonesArray("AliTrackReference",1000);
	541	branch->SetAddress(&references);
	542	np=(Int_t)TR->GetEntries();
7f6ddf58	543	for (i=0; i<np; i++) {
5102bab6	544	references->Clear();
	545	TR->GetEvent(i);
	546	Int_t nref=references->GetEntriesFast();
	547	if (nref==0) continue;
	548	AliTrackReference ref=(AliTrackReference)references->UncheckedAt(0);
	549
	550	Int_t j, lab=ref->Label();
	551	for (j=0; j<nt; j++) {if (gt[j].lab==lab) break;}
	552	if (j==nt) continue;
	553
	554	// (px,py,pz) - in global coordinate system, (x,y,z) - in local !
	555	gt[j].px=ref->Px(); gt[j].py=ref->Py(); gt[j].pz=ref->Pz();
	556	gt[j].x = ref->LocalX();
	557	gt[j].y = ref->LocalY();
	558	gt[j].z = ref->Z();
7f6ddf58	559	}
7f6ddf58	560
5102bab6	561	delete references;
7f6ddf58	562	delete[] good;
88cb7938	563
88cb7938	564	tpcl->UnloadHits();
5102bab6	565	rl->UnloadTrackRefs();
88cb7938	566	rl->UnloadgAlice();
7f6ddf58	567
cf98c13f	568	gBenchmark->Stop("AliTPCComparison");
cf98c13f	569	gBenchmark->Show("AliTPCComparison");
cc80f89e	570	return nt;
8c555625	571	}