[u/mrichter/AliRoot.git] / ITS / AliITSComparisonV2.C

/****************************************************************************
 *           Very important, delicate and rather obscure macro.             *
 *                                                                          *
 *               Creates list of "trackable" tracks,                        *
 *             calculates efficiency, resolutions etc.                      *
 *  The ESD tracks must be in an appropriate state (kITSin or kITSrefit)    *
 *                                                                          *
 *           Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch                 *
 ****************************************************************************/

#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 <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 "AliRun.h"
  #include "AliESD.h"

  #include "AliITS.h"
  #include "AliITSgeom.h"
  #include "AliITStrackV2.h"
  #include "AliITSclusterV2.h"
  #include "AliITSLoader.h"
#endif

Int_t GoodTracksITS(const Char_t *dir=".");

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

static Int_t allgood=0;
static Int_t allselected=0;
static Int_t allfound=0;

Int_t AliITSComparisonV2
(Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".", Float_t ratio=0.0) {
   gBenchmark->Start("AliITSComparisonV2");

   ::Info("AliITSComparisonV2.C","Doing comparison...");
   

   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","Transverse impact parameter",30,-300,300); 
   hmpt->SetFillColor(6);

   TH1F *hz=(TH1F*)gROOT->FindObject("hz");
   if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300); 


   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);


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

   TFile *refFile=TFile::Open(fname,"old");
   if (!refFile || !refFile->IsOpen()) {
   ::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)...");
     if (GoodTracksITS(dir)) {
        ::Error("AliITSComparisonV2.C","Can't generate the reference file !");
        return 1;
     }
   }
   refFile=TFile::Open(fname,"old");
   if (!refFile || !refFile->IsOpen()) {
     ::Error("AliITSComparisonV2.C","Can't open the reference file !");
     return 1;
   }   
  
   TTree *itsTree=(TTree*)refFile->Get("itsTree");
   if (!itsTree) {
     ::Error("AliITSComparisonV2.C","Can't get the reference tree !");
     return 2;
   }
   TBranch *branch=itsTree->GetBranch("ITS");
   if (!branch) {
     ::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
     return 3;
   }
   TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
   branch->SetAddress(&refs);


   sprintf(fname,"%s/AliESDs.root",dir);
   TFile *ef=TFile::Open(fname);
   if ((!ef)||(!ef->IsOpen())) {
      sprintf(fname,"%s/AliESDits.root",dir);
      ef=TFile::Open(fname);
      if ((!ef)||(!ef->IsOpen())) {
         ::Error("AliITSComparisonV2.C","Can't open AliESDits.root !");
         return 4;
      }
   }
   TKey *key=0;
   TIter next(ef->GetListOfKeys());


   //******* Loop over events *********
   Int_t e=0;
   while ((key=(TKey*)next())!=0) {
     cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
 
     AliESD *event=(AliESD*)key->ReadObj();

     Float_t field=event->GetMagneticField();
     AliKalmanTrack::SetConvConst(1000/0.299792458/field);
 
     Int_t nentr=event->GetNumberOfTracks();
     allfound+=nentr;

     if (itsTree->GetEvent(e++)==0) {
        cerr<<"No reconstructable tracks !\n";
        continue;
     }

     Int_t ngood=refs->GetEntriesFast(); 
     allgood+=ngood;

     const Int_t MAX=15000;
     Int_t notf[MAX], nnotf=0;
     Int_t fake[MAX], nfake=0;
     Int_t mult[MAX], numb[MAX], nmult=0;
     Int_t k;
     for (k=0; k<ngood; k++) {
	AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(k); 
        Int_t lab=ref->Label(), tlab=-1;
        Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py());

        if (ptg<ptcutl) continue;
        if (ptg>ptcuth) continue;

        allselected++;

        hgood->Fill(ptg);

        AliESDtrack *esd=0;
        Int_t cnt=0;
        Int_t pipe=0;
        for (Int_t i=0; i<nentr; i++) {
           AliESDtrack *t=event->GetTrack(i);
	   UInt_t status=t->GetStatus();
	   UInt_t flags=AliESDtrack::kTPCin|AliESDtrack::kITSin;

           if ((status&AliESDtrack::kITSrefit)==0) continue;

           if ((status&flags)==status) pipe=1;

           Int_t lbl=t->GetLabel();
           if (lab==TMath::Abs(lbl)) {
	      if (cnt==0) {esd=t; tlab=lbl;}
              cnt++;
           }
        }
        if (cnt==0) {
           notf[nnotf++]=lab;
           continue;
        } else if (cnt>1){
           mult[nmult]=lab;
           numb[nmult]=cnt; nmult++;        
        }

	if (esd->GetITSFakeRatio()<ratio) tlab = TMath::Abs(tlab);

        if (lab==tlab) hfound->Fill(ptg);
        else {
          fake[nfake++]=lab;
          hfake->Fill(ptg); 
        }

        AliITStrackV2 track(*esd);
        if (pipe!=0) {
           track.PropagateTo(3.,0.0028,65.19);
           track.PropagateToVertex();  // This is not "exactly" the vertex 
        }

        Double_t xv,par[5]; track.GetExternalParameters(xv,par);
        Float_t phi=TMath::ASin(par[2]) + track.GetAlpha();
        if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
        if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
        Float_t lam=TMath::ATan(par[3]); 
        Float_t pt_1=TMath::Abs(par[4]);

        Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
        hp->Fill((phi - phig)*1000.);

        Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
        hl->Fill((lam - lamg)*1000.);

        Double_t d=10000*track.GetD(ref->X(),ref->Y());
        hmpt->Fill(d);

        Double_t z=10000*(track.GetZ()-ref->Z());
        hz->Fill(z);

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

        Float_t mom=1./(pt_1*TMath::Cos(lam));
        Float_t dedx=track.GetdEdx();
        hep->Fill(mom,dedx,1.);

        Int_t pdg=(Int_t)ref->GetLength();  //this is particle's PDG !

        if (TMath::Abs(pdg)==211) //pions
           if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);

     }

     cout<<"\nList of Not found tracks :\n";
     for (k=0; k<nnotf; k++){
       cout<<notf[k]<<"\t";
       if ((k%9)==8) cout<<"\n";
     }
     cout<<"\n\nList of fake  tracks :\n";
     for (k=0; k<nfake; k++){
       cout<<fake[k]<<"\t";
       if ((k%9)==8) cout<<"\n";
     }
     cout<<"\n\nList of multiple found tracks :\n";
     for (k=0; k<nmult; k++) {
         cout<<"id.   "<<mult[k]
             <<"     found - "<<numb[k]<<"times\n";
     }
     cout<<endl;

     cout<<"Number of found tracks : "<<nentr<<endl;
     cout<<"Number of \"good\" tracks : "<<ngood<<endl;

     refs->Clear();
     delete event;
   } //***** End of the loop over events

   ef->Close();
   
   delete itsTree;
   refFile->Close();

   Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
   if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
   cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
   cout<<"Total number of found tracks ="<<allfound<<endl;
   cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
   cout<<endl;

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

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

   Int_t minc=33; 

   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)"); 
   if (hp->GetEntries()<minc) hp->Draw(); else 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)");
   if (hl->GetEntries()<minc) hl->Draw(); else 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("(%)");
   if (hpt->GetEntries()<minc) hpt->Draw(); else 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("(micron)");
   if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus"); 
   hz->Draw("same"); 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(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
   line1->Draw("same");
   TLine *line2 = new TLine(0.2,0.9,6.1,0.9); 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"); 
   if (he->GetEntries()<minc) he->Draw(); else 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();

   TFile fc("AliITSComparisonV2.root","RECREATE");
   c1->Write();
   c2->Write();
   fc.Close();

   gBenchmark->Stop("AliITSComparisonV2");
   gBenchmark->Show("AliITSComparisonV2");

   return 0;
}


Int_t GoodTracksITS(const Char_t *dir) {
   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) {
      ::Error("GoodTracksITS","Can't start session !");
      return 1;
   }

   rl->LoadgAlice();
   rl->LoadHeader();
   rl->LoadKinematics();

   AliITS *ITS=(AliITS*)rl->GetAliRun()->GetDetector("ITS");
   if (!ITS) {
      ::Error("GoodTracksITS","Can't get the ITS !");
      delete rl;
      return 2;
   }
   AliITSgeom *geom=ITS->GetITSgeom();
   if (!geom) {
      ::Error("GoodTracksITS","Can't get the ITS geometry !"); 
      delete rl;
      return 3;
   }

   AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
   if (itsl == 0x0) {
       ::Error("GoodTracksITS","Can not find the ITSLoader");
       delete rl;
       return 4;
   }
   itsl->LoadRecPoints();
  

   Int_t nev=rl->GetNumberOfEvents();
   ::Info("GoodTracksITS","Number of events : %d\n",nev);  

   sprintf(fname,"%s/GoodTracksTPC.root",dir);
   TFile *tpcFile=TFile::Open(fname);
   if ((!tpcFile)||(!tpcFile->IsOpen())) {
       ::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
       delete rl;
       return 5; 
   }
   TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
   TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree");
   if (!tpcTree) {
       ::Error("GoodTracksITS","Can't get the TPC reference tree !");
       delete rl;
       return 6;
   }
   TBranch *tpcBranch=tpcTree->GetBranch("TPC");
   if (!tpcBranch) {
      ::Error("GoodTracksITS","Can't get the TPC reference branch !");
      delete rl;
      return 7;
   }
   tpcBranch->SetAddress(&tpcRefs);

   sprintf(fname,"%s/GoodTracksITS.root",dir);
   TFile *itsFile=TFile::Open(fname,"recreate");
   TClonesArray dummy("AliTrackReference",1000), *itsRefs=&dummy;
   TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
   itsTree.Branch("ITS",&itsRefs);

   //********  Loop over generated events 
   for (Int_t e=0; e<nev; e++) {
     Int_t k;

     rl->GetEvent(e);  itsFile->cd();

     Int_t np = rl->GetHeader()->GetNtrack();
     cout<<"Event "<<e<<" Number of particles: "<<np<<endl;

     //******** Fill the "good" masks
     Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;

     TTree *cTree=itsl->TreeR();
     if (!cTree) {
        ::Error("GoodTracksITS","Can't get the cluster tree !"); 
        delete rl;
        return 8;
     }
     TBranch *branch=cTree->GetBranch("Clusters");
     if (!branch) {
        ::Error("GoodTracksITS","Can't get the clusters branch !"); 
        delete rl;
        return 9;
     }
     TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
     branch->SetAddress(&clusters);

     Int_t entr=(Int_t)cTree->GetEntries();
     for (k=0; k<entr; k++) {
         cTree->GetEvent(k);
         Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
         Int_t lay,lad,det;  geom->GetModuleId(k,lay,lad,det);
         if (lay<1 || lay>6) {
	    ::Error("GoodTracksITS","Wrong layer !"); 
            delete rl;
            return 10;
         }
         while (ncl--) {
            AliITSclusterV2 *pnt=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
            Int_t l0=pnt->GetLabel(0);
	       if (l0>=np) {
// 		 cerr<<"Wrong label: "<<l0<<endl;
		 continue;
	       }
            Int_t l1=pnt->GetLabel(1);
	       if (l1>=np) {
// 		 cerr<<"Wrong label: "<<l1<<endl;
		 continue;
	       }
            Int_t l2=pnt->GetLabel(2);
	       if (l2>=np) {
// 		 cerr<<"Wrong label: "<<l2<<endl;
		 continue;
	       }
            Int_t mask=1<<(lay-1);
            if (l0>=0) good[l0]|=mask; 
            if (l1>=0) good[l1]|=mask; 
            if (l2>=0) good[l2]|=mask;
         }
         clusters->Clear();
     }
   

     //****** select tracks which are "good" enough
     AliStack* stack = rl->Stack();

     tpcTree->GetEvent(e);
     Int_t nk=tpcRefs->GetEntriesFast();
     Int_t nt=0;
     for (k=0; k<nk; k++) {
        AliTrackReference *tpcRef=(AliTrackReference *)tpcRefs->UncheckedAt(k);
        Int_t lab=tpcRef->Label();
        if (good[lab] != 0x3F) continue;
        TParticle *p = (TParticle*)stack->Particle(lab);
        if (p == 0x0) {
           cerr<<"Can not get particle "<<lab<<endl;
           continue;
        }

        AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference(*tpcRef);
        ref->SetMomentum(p->Px(),p->Py(),p->Pz());
        ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
        nt++;
     }
     tpcRefs->Clear();

     itsTree.Fill();
     itsRefs->Clear();

     delete[] good;

   } //*** end of the loop over generated events

   itsTree.Write();
   itsFile->Close();

   delete tpcTree;
   tpcFile->Close();

   delete rl;
   return 0;
}
Commit	Line	Data
c630aafd	1	/****************************************************************************
5102bab6	2	* Very important, delicate and rather obscure macro. *
	3	* *
	4	* Creates list of "trackable" tracks, *
	5	* calculates efficiency, resolutions etc. *
	6	* The ESD tracks must be in an appropriate state (kITSin or kITSrefit) *
	7	* *
c630aafd	8	* Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
	9	****************************************************************************/
	10
	11	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
4fa1e629	12	#include <TMath.h>
4fa1e629	13	#include <TError.h>
ddae8318	14	#include <Riostream.h>
4fa1e629	15	#include <TH1F.h>
	16	#include <TH2F.h>
	17	#include <TTree.h>
	18	#include <TParticle.h>
	19	#include <TCanvas.h>
	20	#include <TLine.h>
	21	#include <TText.h>
	22	#include <TBenchmark.h>
	23	#include <TStyle.h>
	24	#include <TKey.h>
	25	#include <TROOT.h>
03248e6d	26
c630aafd	27	#include "AliStack.h"
4fa1e629	28	#include "AliHeader.h"
4fa1e629	29	#include "AliTrackReference.h"
88cb7938	30	#include "AliRunLoader.h"
4fa1e629	31	#include "AliRun.h"
	32	#include "AliESD.h"
	33
03248e6d	34	#include "AliITS.h"
03248e6d	35	#include "AliITSgeom.h"
03248e6d	36	#include "AliITStrackV2.h"
03248e6d	37	#include "AliITSclusterV2.h"
4fa1e629	38	#include "AliITSLoader.h"
03248e6d	39	#endif
03248e6d	40
4fa1e629	41	Int_t GoodTracksITS(const Char_t *dir=".");
5102bab6	42
c630aafd	43	extern AliRun *gAlice;
4fa1e629	44	extern TBenchmark *gBenchmark;
4fa1e629	45	extern TROOT *gROOT;
c630aafd	46
4fa1e629	47	static Int_t allgood=0;
	48	static Int_t allselected=0;
	49	static Int_t allfound=0;
	50
	51	Int_t AliITSComparisonV2
	52	(Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".", Float_t ratio=0.0) {
	53	gBenchmark->Start("AliITSComparisonV2");
	54
	55	::Info("AliITSComparisonV2.C","Doing comparison...");
88cb7938	56
4fa1e629	57
	58	TH1F hp=(TH1F)gROOT->FindObject("hp");
	59	if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
	60	hp->SetFillColor(4);
	61
	62	TH1F hl=(TH1F)gROOT->FindObject("hl");
	63	if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
	64	hl->SetFillColor(4);
	65
	66	TH1F hpt=(TH1F)gROOT->FindObject("hpt");
	67	if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
	68	hpt->SetFillColor(2);
	69
	70	TH1F hmpt=(TH1F)gROOT->FindObject("hmpt");
	71	if (!hmpt)
	72	hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300);
	73	hmpt->SetFillColor(6);
	74
	75	TH1F hz=(TH1F)gROOT->FindObject("hz");
	76	if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300);
	77
	78
	79
	80	TH1F hgood=(TH1F)gROOT->FindObject("hgood");
	81	if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
	82
	83	TH1F hfound=(TH1F)gROOT->FindObject("hfound");
	84	if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
	85
	86	TH1F hfake=(TH1F)gROOT->FindObject("hfake");
	87	if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
	88
	89	TH1F hg=(TH1F)gROOT->FindObject("hg");
	90	if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
	91	hg->SetLineColor(4); hg->SetLineWidth(2);
	92
	93	TH1F hf=(TH1F)gROOT->FindObject("hf");
	94	if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
	95	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
	96
	97	TH1F he=(TH1F)gROOT->FindObject("he");
	98	if (!he)
	99	he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
	100
	101	TH2F hep=(TH2F)gROOT->FindObject("hep");
	102	if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
	103	hep->SetMarkerStyle(8);
	104	hep->SetMarkerSize(0.4);
	105
	106
	107	Char_t fname[100];
	108	sprintf(fname,"%s/GoodTracksITS.root",dir);
	109
	110	TFile *refFile=TFile::Open(fname,"old");
	111	if (!refFile \|\| !refFile->IsOpen()) {
	112	::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)...");
	113	if (GoodTracksITS(dir)) {
	114	::Error("AliITSComparisonV2.C","Can't generate the reference file !");
	115	return 1;
	116	}
c630aafd	117	}
4fa1e629	118	refFile=TFile::Open(fname,"old");
	119	if (!refFile \|\| !refFile->IsOpen()) {
	120	::Error("AliITSComparisonV2.C","Can't open the reference file !");
	121	return 1;
	122	}
	123
	124	TTree itsTree=(TTree)refFile->Get("itsTree");
	125	if (!itsTree) {
	126	::Error("AliITSComparisonV2.C","Can't get the reference tree !");
	127	return 2;
c630aafd	128	}
4fa1e629	129	TBranch *branch=itsTree->GetBranch("ITS");
	130	if (!branch) {
	131	::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
	132	return 3;
03248e6d	133	}
4fa1e629	134	TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
	135	branch->SetAddress(&refs);
	136
03248e6d	137
4fa1e629	138	sprintf(fname,"%s/AliESDs.root",dir);
4fa1e629	139	TFile *ef=TFile::Open(fname);
5102bab6	140	if ((!ef)\|\|(!ef->IsOpen())) {
4fa1e629	141	sprintf(fname,"%s/AliESDits.root",dir);
	142	ef=TFile::Open(fname);
	143	if ((!ef)\|\|(!ef->IsOpen())) {
	144	::Error("AliITSComparisonV2.C","Can't open AliESDits.root !");
	145	return 4;
	146	}
5102bab6	147	}
	148	TKey *key=0;
	149	TIter next(ef->GetListOfKeys());
4fa1e629	150
	151
	152
	153	//***** Loop over events *******
	154	Int_t e=0;
	155	while ((key=(TKey*)next())!=0) {
	156	cout<<endl<<endl<<"******* Processing event number: "<<e<<"*****\n";
	157
5102bab6	158	AliESD event=(AliESD)key->ReadObj();
4fa1e629	159
	160	Float_t field=event->GetMagneticField();
	161	AliKalmanTrack::SetConvConst(1000/0.299792458/field);
	162
	163	Int_t nentr=event->GetNumberOfTracks();
	164	allfound+=nentr;
	165
	166	if (itsTree->GetEvent(e++)==0) {
	167	cerr<<"No reconstructable tracks !\n";
	168	continue;
18856a77	169	}
18856a77	170
4fa1e629	171	Int_t ngood=refs->GetEntriesFast();
4fa1e629	172	allgood+=ngood;
03248e6d	173
4fa1e629	174	const Int_t MAX=15000;
	175	Int_t notf[MAX], nnotf=0;
	176	Int_t fake[MAX], nfake=0;
	177	Int_t mult[MAX], numb[MAX], nmult=0;
	178	Int_t k;
	179	for (k=0; k<ngood; k++) {
	180	AliTrackReference ref=(AliTrackReference)refs->UncheckedAt(k);
	181	Int_t lab=ref->Label(), tlab=-1;
	182	Float_t ptg=TMath::Sqrt(ref->Px()ref->Px() + ref->Py()ref->Py());
03248e6d	183
4fa1e629	184	if (ptg<ptcutl) continue;
4fa1e629	185	if (ptg>ptcuth) continue;
03248e6d	186
4fa1e629	187	allselected++;
f2718ade	188
4fa1e629	189	hgood->Fill(ptg);
03248e6d	190
4fa1e629	191	AliESDtrack *esd=0;
	192	Int_t cnt=0;
	193	Int_t pipe=0;
	194	for (Int_t i=0; i<nentr; i++) {
	195	AliESDtrack *t=event->GetTrack(i);
	196	UInt_t status=t->GetStatus();
	197	UInt_t flags=AliESDtrack::kTPCin\|AliESDtrack::kITSin;
f2718ade	198
4fa1e629	199	if ((status&AliESDtrack::kITSrefit)==0) continue;
	200
	201	if ((status&flags)==status) pipe=1;
	202
	203	Int_t lbl=t->GetLabel();
	204	if (lab==TMath::Abs(lbl)) {
	205	if (cnt==0) {esd=t; tlab=lbl;}
	206	cnt++;
	207	}
	208	}
	209	if (cnt==0) {
	210	notf[nnotf++]=lab;
	211	continue;
	212	} else if (cnt>1){
	213	mult[nmult]=lab;
	214	numb[nmult]=cnt; nmult++;
	215	}
	216
	217	if (esd->GetITSFakeRatio()<ratio) tlab = TMath::Abs(tlab);
f2718ade	218
f2718ade	219	if (lab==tlab) hfound->Fill(ptg);
	220	else {
	221	fake[nfake++]=lab;
	222	hfake->Fill(ptg);
	223	}
f2718ade	224
4fa1e629	225	AliITStrackV2 track(*esd);
	226	if (pipe!=0) {
	227	track.PropagateTo(3.,0.0028,65.19);
	228	track.PropagateToVertex(); // This is not "exactly" the vertex
	229	}
03248e6d	230
4fa1e629	231	Double_t xv,par[5]; track.GetExternalParameters(xv,par);
	232	Float_t phi=TMath::ASin(par[2]) + track.GetAlpha();
	233	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
	234	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
	235	Float_t lam=TMath::ATan(par[3]);
	236	Float_t pt_1=TMath::Abs(par[4]);
03248e6d	237
4fa1e629	238	Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
4fa1e629	239	hp->Fill((phi - phig)*1000.);
03248e6d	240
4fa1e629	241	Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
4fa1e629	242	hl->Fill((lam - lamg)*1000.);
03248e6d	243
4fa1e629	244	Double_t d=10000*track.GetD(ref->X(),ref->Y());
4fa1e629	245	hmpt->Fill(d);
03248e6d	246
4fa1e629	247	Double_t z=10000*(track.GetZ()-ref->Z());
4fa1e629	248	hz->Fill(z);
03248e6d	249
4fa1e629	250	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
03248e6d	251
4fa1e629	252	Float_t mom=1./(pt_1*TMath::Cos(lam));
	253	Float_t dedx=track.GetdEdx();
	254	hep->Fill(mom,dedx,1.);
f2718ade	255
4fa1e629	256	Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
f2718ade	257
4fa1e629	258	if (TMath::Abs(pdg)==211) //pions
4fa1e629	259	if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
03248e6d	260
4fa1e629	261	}
	262
	263	cout<<"\nList of Not found tracks :\n";
	264	for (k=0; k<nnotf; k++){
	265	cout<<notf[k]<<"\t";
	266	if ((k%9)==8) cout<<"\n";
	267	}
	268	cout<<"\n\nList of fake tracks :\n";
	269	for (k=0; k<nfake; k++){
	270	cout<<fake[k]<<"\t";
	271	if ((k%9)==8) cout<<"\n";
	272	}
	273	cout<<"\n\nList of multiple found tracks :\n";
	274	for (k=0; k<nmult; k++) {
	275	cout<<"id. "<<mult[k]
	276	<<" found - "<<numb[k]<<"times\n";
	277	}
	278	cout<<endl;
	279
	280	cout<<"Number of found tracks : "<<nentr<<endl;
	281	cout<<"Number of \"good\" tracks : "<<ngood<<endl;
f2718ade	282
4fa1e629	283	refs->Clear();
	284	delete event;
	285	} //***** End of the loop over events
	286
	287	ef->Close();
	288
	289	delete itsTree;
	290	refFile->Close();
	291
	292	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
	293	if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
	294	cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
	295	cout<<"Total number of found tracks ="<<allfound<<endl;
	296	cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
	297	cout<<endl;
03248e6d	298
	299	gStyle->SetOptStat(111110);
	300	gStyle->SetOptFit(1);
	301
	302	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	303
2d343a94	304	Int_t minc=33;
2d343a94	305
03248e6d	306	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
03248e6d	307	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
2d343a94	308	hp->SetFillColor(4); hp->SetXTitle("(mrad)");
2d343a94	309	if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
03248e6d	310
	311	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	312	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
2d343a94	313	hl->SetXTitle("(mrad)");
2d343a94	314	if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
03248e6d	315
	316	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
	317	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
2d343a94	318	hpt->SetXTitle("(%)");
2d343a94	319	if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
03248e6d	320
	321	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
	322	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
2d343a94	323	hmpt->SetXTitle("(micron)");
	324	if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
	325	hz->Draw("same"); c1->cd();
03248e6d	326
	327
	328	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
	329	p5->SetFillColor(41); p5->SetFrameFillColor(10);
	330	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
	331	hg->Divide(hfound,hgood,1,1.,"b");
	332	hf->Divide(hfake,hgood,1,1.,"b");
	333	hg->SetMaximum(1.4);
	334	hg->SetYTitle("Tracking efficiency");
	335	hg->SetXTitle("Pt (GeV/c)");
	336	hg->Draw();
	337
4fa1e629	338	TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
03248e6d	339	line1->Draw("same");
4fa1e629	340	TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
03248e6d	341	line2->Draw("same");
	342
	343	hf->SetFillColor(1);
	344	hf->SetFillStyle(3013);
	345	hf->SetLineColor(2);
	346	hf->SetLineWidth(2);
	347	hf->Draw("histsame");
	348	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	349	text->SetTextSize(0.05);
	350	text->Draw();
	351	text = new TText(0.453919,1.11408,"Good tracks");
	352	text->SetTextSize(0.05);
	353	text->Draw();
	354
c630aafd	355	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	356	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	357	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	358	he->SetFillColor(2); he->SetFillStyle(3005);
	359	he->SetXTitle("Arbitrary Units");
2d343a94	360	if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
c630aafd	361
	362	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	363	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	364	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	365	hep->Draw(); c1->cd();
2d343a94	366
	367	TFile fc("AliITSComparisonV2.root","RECREATE");
	368	c1->Write();
	369	c2->Write();
	370	fc.Close();
	371
4fa1e629	372	gBenchmark->Stop("AliITSComparisonV2");
	373	gBenchmark->Show("AliITSComparisonV2");
	374
03248e6d	375	return 0;
	376	}
	377
4fa1e629	378
	379
	380	Int_t GoodTracksITS(const Char_t *dir) {
	381	if (gAlice) {
	382	delete gAlice->GetRunLoader();
	383	delete gAlice;//if everything was OK here it is already NULL
	384	gAlice = 0x0;
c630aafd	385	}
88cb7938	386
4fa1e629	387	Char_t fname[100];
	388	sprintf(fname,"%s/galice.root",dir);
	389
	390	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
	391	if (!rl) {
	392	::Error("GoodTracksITS","Can't start session !");
	393	return 1;
c630aafd	394	}
4fa1e629	395
88cb7938	396	rl->LoadgAlice();
88cb7938	397	rl->LoadHeader();
4fa1e629	398	rl->LoadKinematics();
03248e6d	399
88cb7938	400	AliITS ITS=(AliITS)rl->GetAliRun()->GetDetector("ITS");
03248e6d	401	if (!ITS) {
4fa1e629	402	::Error("GoodTracksITS","Can't get the ITS !");
	403	delete rl;
	404	return 2;
03248e6d	405	}
	406	AliITSgeom *geom=ITS->GetITSgeom();
	407	if (!geom) {
4fa1e629	408	::Error("GoodTracksITS","Can't get the ITS geometry !");
	409	delete rl;
	410	return 3;
03248e6d	411	}
03248e6d	412
4fa1e629	413	AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
	414	if (itsl == 0x0) {
	415	::Error("GoodTracksITS","Can not find the ITSLoader");
	416	delete rl;
	417	return 4;
	418	}
c630aafd	419	itsl->LoadRecPoints();
4fa1e629	420
	421
	422	Int_t nev=rl->GetNumberOfEvents();
	423	::Info("GoodTracksITS","Number of events : %d\n",nev);
	424
	425	sprintf(fname,"%s/GoodTracksTPC.root",dir);
	426	TFile *tpcFile=TFile::Open(fname);
	427	if ((!tpcFile)\|\|(!tpcFile->IsOpen())) {
	428	::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
	429	delete rl;
	430	return 5;
03248e6d	431	}
4fa1e629	432	TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
	433	TTree tpcTree=(TTree)tpcFile->Get("tpcTree");
	434	if (!tpcTree) {
	435	::Error("GoodTracksITS","Can't get the TPC reference tree !");
	436	delete rl;
	437	return 6;
03248e6d	438	}
4fa1e629	439	TBranch *tpcBranch=tpcTree->GetBranch("TPC");
	440	if (!tpcBranch) {
	441	::Error("GoodTracksITS","Can't get the TPC reference branch !");
	442	delete rl;
	443	return 7;
	444	}
	445	tpcBranch->SetAddress(&tpcRefs);
	446
	447	sprintf(fname,"%s/GoodTracksITS.root",dir);
	448	TFile *itsFile=TFile::Open(fname,"recreate");
	449	TClonesArray dummy("AliTrackReference",1000), *itsRefs=&dummy;
	450	TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
	451	itsTree.Branch("ITS",&itsRefs);
	452
	453	//******** Loop over generated events
	454	for (Int_t e=0; e<nev; e++) {
	455	Int_t k;
	456
	457	rl->GetEvent(e); itsFile->cd();
	458
	459	Int_t np = rl->GetHeader()->GetNtrack();
	460	cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
	461
	462	//******** Fill the "good" masks
	463	Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
	464
	465	TTree *cTree=itsl->TreeR();
	466	if (!cTree) {
	467	::Error("GoodTracksITS","Can't get the cluster tree !");
	468	delete rl;
	469	return 8;
03248e6d	470	}
4fa1e629	471	TBranch *branch=cTree->GetBranch("Clusters");
	472	if (!branch) {
	473	::Error("GoodTracksITS","Can't get the clusters branch !");
	474	delete rl;
	475	return 9;
	476	}
	477	TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
	478	branch->SetAddress(&clusters);
	479
	480	Int_t entr=(Int_t)cTree->GetEntries();
	481	for (k=0; k<entr; k++) {
	482	cTree->GetEvent(k);
	483	Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
	484	Int_t lay,lad,det; geom->GetModuleId(k,lay,lad,det);
	485	if (lay<1 \|\| lay>6) {
	486	::Error("GoodTracksITS","Wrong layer !");
	487	delete rl;
	488	return 10;
	489	}
	490	while (ncl--) {
	491	AliITSclusterV2 pnt=(AliITSclusterV2)clusters->UncheckedAt(ncl);
	492	Int_t l0=pnt->GetLabel(0);
	493	if (l0>=np) {
	494	// cerr<<"Wrong label: "<<l0<<endl;
	495	continue;
	496	}
	497	Int_t l1=pnt->GetLabel(1);
	498	if (l1>=np) {
	499	// cerr<<"Wrong label: "<<l1<<endl;
	500	continue;
	501	}
	502	Int_t l2=pnt->GetLabel(2);
	503	if (l2>=np) {
	504	// cerr<<"Wrong label: "<<l2<<endl;
	505	continue;
	506	}
	507	Int_t mask=1<<(lay-1);
	508	if (l0>=0) good[l0]\|=mask;
	509	if (l1>=0) good[l1]\|=mask;
	510	if (l2>=0) good[l2]\|=mask;
	511	}
	512	clusters->Clear();
03248e6d	513	}
88cb7938	514
03248e6d	515
4fa1e629	516	//****** select tracks which are "good" enough
	517	AliStack* stack = rl->Stack();
	518
	519	tpcTree->GetEvent(e);
	520	Int_t nk=tpcRefs->GetEntriesFast();
	521	Int_t nt=0;
	522	for (k=0; k<nk; k++) {
	523	AliTrackReference tpcRef=(AliTrackReference )tpcRefs->UncheckedAt(k);
	524	Int_t lab=tpcRef->Label();
	525	if (good[lab] != 0x3F) continue;
	526	TParticle p = (TParticle)stack->Particle(lab);
	527	if (p == 0x0) {
	528	cerr<<"Can not get particle "<<lab<<endl;
	529	continue;
	530	}
	531
	532	AliTrackReference ref=new((itsRefs)[nt]) AliTrackReference(*tpcRef);
	533	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
	534	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
	535	nt++;
	536	}
	537	tpcRefs->Clear();
	538
	539	itsTree.Fill();
	540	itsRefs->Clear();
03248e6d	541
4fa1e629	542	delete[] good;
03248e6d	543
4fa1e629	544	} //*** end of the loop over generated events
	545
	546	itsTree.Write();
	547	itsFile->Close();
	548
	549	delete tpcTree;
	550	tpcFile->Close();
	551
	552	delete rl;
	553	return 0;
03248e6d	554	}
	555
	556