[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 <TFile.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;
      }
   }
   AliESD* event = new AliESD;
   TTree* esdTree = (TTree*) ef->Get("esdTree");
   if (!esdTree) {
      ::Error("AliITSComparison.C", "no ESD tree found");
      return 6;
   }
   esdTree->SetBranchAddress("ESD", &event);


   //******* Loop over events *********
   Int_t e=0;
   while (esdTree->GetEvent(e)) {
     cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
 
     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();
   } //***** End of the loop over events

   delete event;
   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 dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
   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>
8b462fd8	24	#include <TFile.h>
4fa1e629	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	}
8b462fd8	148	AliESD* event = new AliESD;
	149	TTree* esdTree = (TTree*) ef->Get("esdTree");
	150	if (!esdTree) {
	151	::Error("AliITSComparison.C", "no ESD tree found");
	152	return 6;
	153	}
	154	esdTree->SetBranchAddress("ESD", &event);
4fa1e629	155
	156
	157	//***** Loop over events *******
	158	Int_t e=0;
8b462fd8	159	while (esdTree->GetEvent(e)) {
4fa1e629	160	cout<<endl<<endl<<"******* Processing event number: "<<e<<"*****\n";
4fa1e629	161
4fa1e629	162	Float_t field=event->GetMagneticField();
	163	AliKalmanTrack::SetConvConst(1000/0.299792458/field);
	164
	165	Int_t nentr=event->GetNumberOfTracks();
	166	allfound+=nentr;
	167
	168	if (itsTree->GetEvent(e++)==0) {
	169	cerr<<"No reconstructable tracks !\n";
	170	continue;
18856a77	171	}
18856a77	172
4fa1e629	173	Int_t ngood=refs->GetEntriesFast();
4fa1e629	174	allgood+=ngood;
03248e6d	175
4fa1e629	176	const Int_t MAX=15000;
	177	Int_t notf[MAX], nnotf=0;
	178	Int_t fake[MAX], nfake=0;
	179	Int_t mult[MAX], numb[MAX], nmult=0;
	180	Int_t k;
	181	for (k=0; k<ngood; k++) {
	182	AliTrackReference ref=(AliTrackReference)refs->UncheckedAt(k);
	183	Int_t lab=ref->Label(), tlab=-1;
	184	Float_t ptg=TMath::Sqrt(ref->Px()ref->Px() + ref->Py()ref->Py());
03248e6d	185
4fa1e629	186	if (ptg<ptcutl) continue;
4fa1e629	187	if (ptg>ptcuth) continue;
03248e6d	188
4fa1e629	189	allselected++;
f2718ade	190
4fa1e629	191	hgood->Fill(ptg);
03248e6d	192
4fa1e629	193	AliESDtrack *esd=0;
	194	Int_t cnt=0;
	195	Int_t pipe=0;
	196	for (Int_t i=0; i<nentr; i++) {
	197	AliESDtrack *t=event->GetTrack(i);
	198	UInt_t status=t->GetStatus();
	199	UInt_t flags=AliESDtrack::kTPCin\|AliESDtrack::kITSin;
f2718ade	200
4fa1e629	201	if ((status&AliESDtrack::kITSrefit)==0) continue;
	202
	203	if ((status&flags)==status) pipe=1;
	204
	205	Int_t lbl=t->GetLabel();
	206	if (lab==TMath::Abs(lbl)) {
	207	if (cnt==0) {esd=t; tlab=lbl;}
	208	cnt++;
	209	}
	210	}
	211	if (cnt==0) {
	212	notf[nnotf++]=lab;
	213	continue;
	214	} else if (cnt>1){
	215	mult[nmult]=lab;
	216	numb[nmult]=cnt; nmult++;
	217	}
	218
	219	if (esd->GetITSFakeRatio()<ratio) tlab = TMath::Abs(tlab);
f2718ade	220
f2718ade	221	if (lab==tlab) hfound->Fill(ptg);
	222	else {
	223	fake[nfake++]=lab;
	224	hfake->Fill(ptg);
	225	}
f2718ade	226
4fa1e629	227	AliITStrackV2 track(*esd);
	228	if (pipe!=0) {
	229	track.PropagateTo(3.,0.0028,65.19);
	230	track.PropagateToVertex(); // This is not "exactly" the vertex
	231	}
03248e6d	232
4fa1e629	233	Double_t xv,par[5]; track.GetExternalParameters(xv,par);
	234	Float_t phi=TMath::ASin(par[2]) + track.GetAlpha();
	235	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
	236	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
	237	Float_t lam=TMath::ATan(par[3]);
	238	Float_t pt_1=TMath::Abs(par[4]);
03248e6d	239
4fa1e629	240	Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
4fa1e629	241	hp->Fill((phi - phig)*1000.);
03248e6d	242
4fa1e629	243	Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
4fa1e629	244	hl->Fill((lam - lamg)*1000.);
03248e6d	245
4fa1e629	246	Double_t d=10000*track.GetD(ref->X(),ref->Y());
4fa1e629	247	hmpt->Fill(d);
03248e6d	248
4fa1e629	249	Double_t z=10000*(track.GetZ()-ref->Z());
4fa1e629	250	hz->Fill(z);
03248e6d	251
4fa1e629	252	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
03248e6d	253
4fa1e629	254	Float_t mom=1./(pt_1*TMath::Cos(lam));
	255	Float_t dedx=track.GetdEdx();
	256	hep->Fill(mom,dedx,1.);
f2718ade	257
4fa1e629	258	Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
f2718ade	259
4fa1e629	260	if (TMath::Abs(pdg)==211) //pions
4fa1e629	261	if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
03248e6d	262
4fa1e629	263	}
	264
	265	cout<<"\nList of Not found tracks :\n";
	266	for (k=0; k<nnotf; k++){
	267	cout<<notf[k]<<"\t";
	268	if ((k%9)==8) cout<<"\n";
	269	}
	270	cout<<"\n\nList of fake tracks :\n";
	271	for (k=0; k<nfake; k++){
	272	cout<<fake[k]<<"\t";
	273	if ((k%9)==8) cout<<"\n";
	274	}
	275	cout<<"\n\nList of multiple found tracks :\n";
	276	for (k=0; k<nmult; k++) {
	277	cout<<"id. "<<mult[k]
	278	<<" found - "<<numb[k]<<"times\n";
	279	}
	280	cout<<endl;
	281
	282	cout<<"Number of found tracks : "<<nentr<<endl;
	283	cout<<"Number of \"good\" tracks : "<<ngood<<endl;
f2718ade	284
4fa1e629	285	refs->Clear();
4fa1e629	286	} //***** End of the loop over events
4fa1e629	287
8b462fd8	288	delete event;
4fa1e629	289	ef->Close();
	290
	291	delete itsTree;
	292	refFile->Close();
	293
	294	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
	295	if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
	296	cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
	297	cout<<"Total number of found tracks ="<<allfound<<endl;
	298	cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
	299	cout<<endl;
03248e6d	300
	301	gStyle->SetOptStat(111110);
	302	gStyle->SetOptFit(1);
	303
	304	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	305
2d343a94	306	Int_t minc=33;
2d343a94	307
03248e6d	308	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
03248e6d	309	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
2d343a94	310	hp->SetFillColor(4); hp->SetXTitle("(mrad)");
2d343a94	311	if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
03248e6d	312
	313	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	314	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
2d343a94	315	hl->SetXTitle("(mrad)");
2d343a94	316	if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
03248e6d	317
	318	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
	319	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
2d343a94	320	hpt->SetXTitle("(%)");
2d343a94	321	if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
03248e6d	322
	323	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
	324	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
2d343a94	325	hmpt->SetXTitle("(micron)");
	326	if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
	327	hz->Draw("same"); c1->cd();
03248e6d	328
	329
	330	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
	331	p5->SetFillColor(41); p5->SetFrameFillColor(10);
	332	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
	333	hg->Divide(hfound,hgood,1,1.,"b");
	334	hf->Divide(hfake,hgood,1,1.,"b");
	335	hg->SetMaximum(1.4);
	336	hg->SetYTitle("Tracking efficiency");
	337	hg->SetXTitle("Pt (GeV/c)");
	338	hg->Draw();
	339
4fa1e629	340	TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
03248e6d	341	line1->Draw("same");
4fa1e629	342	TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
03248e6d	343	line2->Draw("same");
	344
	345	hf->SetFillColor(1);
	346	hf->SetFillStyle(3013);
	347	hf->SetLineColor(2);
	348	hf->SetLineWidth(2);
	349	hf->Draw("histsame");
	350	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	351	text->SetTextSize(0.05);
	352	text->Draw();
	353	text = new TText(0.453919,1.11408,"Good tracks");
	354	text->SetTextSize(0.05);
	355	text->Draw();
	356
c630aafd	357	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	358	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	359	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	360	he->SetFillColor(2); he->SetFillStyle(3005);
	361	he->SetXTitle("Arbitrary Units");
2d343a94	362	if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
c630aafd	363
	364	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	365	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	366	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	367	hep->Draw(); c1->cd();
2d343a94	368
	369	TFile fc("AliITSComparisonV2.root","RECREATE");
	370	c1->Write();
	371	c2->Write();
	372	fc.Close();
	373
4fa1e629	374	gBenchmark->Stop("AliITSComparisonV2");
	375	gBenchmark->Show("AliITSComparisonV2");
	376
03248e6d	377	return 0;
	378	}
	379
4fa1e629	380
	381
	382	Int_t GoodTracksITS(const Char_t *dir) {
	383	if (gAlice) {
	384	delete gAlice->GetRunLoader();
	385	delete gAlice;//if everything was OK here it is already NULL
	386	gAlice = 0x0;
c630aafd	387	}
88cb7938	388
4fa1e629	389	Char_t fname[100];
	390	sprintf(fname,"%s/galice.root",dir);
	391
	392	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
	393	if (!rl) {
	394	::Error("GoodTracksITS","Can't start session !");
	395	return 1;
c630aafd	396	}
4fa1e629	397
88cb7938	398	rl->LoadgAlice();
88cb7938	399	rl->LoadHeader();
4fa1e629	400	rl->LoadKinematics();
03248e6d	401
88cb7938	402	AliITS ITS=(AliITS)rl->GetAliRun()->GetDetector("ITS");
03248e6d	403	if (!ITS) {
4fa1e629	404	::Error("GoodTracksITS","Can't get the ITS !");
	405	delete rl;
	406	return 2;
03248e6d	407	}
	408	AliITSgeom *geom=ITS->GetITSgeom();
	409	if (!geom) {
4fa1e629	410	::Error("GoodTracksITS","Can't get the ITS geometry !");
	411	delete rl;
	412	return 3;
03248e6d	413	}
03248e6d	414
4fa1e629	415	AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
	416	if (itsl == 0x0) {
	417	::Error("GoodTracksITS","Can not find the ITSLoader");
	418	delete rl;
	419	return 4;
	420	}
c630aafd	421	itsl->LoadRecPoints();
4fa1e629	422
	423
	424	Int_t nev=rl->GetNumberOfEvents();
	425	::Info("GoodTracksITS","Number of events : %d\n",nev);
	426
	427	sprintf(fname,"%s/GoodTracksTPC.root",dir);
	428	TFile *tpcFile=TFile::Open(fname);
	429	if ((!tpcFile)\|\|(!tpcFile->IsOpen())) {
	430	::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
	431	delete rl;
	432	return 5;
03248e6d	433	}
4fa1e629	434	TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
	435	TTree tpcTree=(TTree)tpcFile->Get("tpcTree");
	436	if (!tpcTree) {
	437	::Error("GoodTracksITS","Can't get the TPC reference tree !");
	438	delete rl;
	439	return 6;
03248e6d	440	}
4fa1e629	441	TBranch *tpcBranch=tpcTree->GetBranch("TPC");
	442	if (!tpcBranch) {
	443	::Error("GoodTracksITS","Can't get the TPC reference branch !");
	444	delete rl;
	445	return 7;
	446	}
	447	tpcBranch->SetAddress(&tpcRefs);
	448
	449	sprintf(fname,"%s/GoodTracksITS.root",dir);
	450	TFile *itsFile=TFile::Open(fname,"recreate");
8c277781	451	TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
4fa1e629	452	TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
	453	itsTree.Branch("ITS",&itsRefs);
	454
	455	//******** Loop over generated events
	456	for (Int_t e=0; e<nev; e++) {
	457	Int_t k;
	458
	459	rl->GetEvent(e); itsFile->cd();
	460
	461	Int_t np = rl->GetHeader()->GetNtrack();
	462	cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
	463
	464	//******** Fill the "good" masks
	465	Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
	466
	467	TTree *cTree=itsl->TreeR();
	468	if (!cTree) {
	469	::Error("GoodTracksITS","Can't get the cluster tree !");
	470	delete rl;
	471	return 8;
03248e6d	472	}
4fa1e629	473	TBranch *branch=cTree->GetBranch("Clusters");
	474	if (!branch) {
	475	::Error("GoodTracksITS","Can't get the clusters branch !");
	476	delete rl;
	477	return 9;
	478	}
	479	TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
	480	branch->SetAddress(&clusters);
	481
	482	Int_t entr=(Int_t)cTree->GetEntries();
	483	for (k=0; k<entr; k++) {
	484	cTree->GetEvent(k);
	485	Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
	486	Int_t lay,lad,det; geom->GetModuleId(k,lay,lad,det);
	487	if (lay<1 \|\| lay>6) {
	488	::Error("GoodTracksITS","Wrong layer !");
	489	delete rl;
	490	return 10;
	491	}
	492	while (ncl--) {
	493	AliITSclusterV2 pnt=(AliITSclusterV2)clusters->UncheckedAt(ncl);
	494	Int_t l0=pnt->GetLabel(0);
	495	if (l0>=np) {
	496	// cerr<<"Wrong label: "<<l0<<endl;
	497	continue;
	498	}
	499	Int_t l1=pnt->GetLabel(1);
	500	if (l1>=np) {
	501	// cerr<<"Wrong label: "<<l1<<endl;
	502	continue;
	503	}
	504	Int_t l2=pnt->GetLabel(2);
	505	if (l2>=np) {
	506	// cerr<<"Wrong label: "<<l2<<endl;
	507	continue;
	508	}
	509	Int_t mask=1<<(lay-1);
	510	if (l0>=0) good[l0]\|=mask;
	511	if (l1>=0) good[l1]\|=mask;
	512	if (l2>=0) good[l2]\|=mask;
	513	}
	514	clusters->Clear();
03248e6d	515	}
88cb7938	516
03248e6d	517
4fa1e629	518	//****** select tracks which are "good" enough
	519	AliStack* stack = rl->Stack();
	520
	521	tpcTree->GetEvent(e);
	522	Int_t nk=tpcRefs->GetEntriesFast();
	523	Int_t nt=0;
	524	for (k=0; k<nk; k++) {
	525	AliTrackReference tpcRef=(AliTrackReference )tpcRefs->UncheckedAt(k);
	526	Int_t lab=tpcRef->Label();
	527	if (good[lab] != 0x3F) continue;
	528	TParticle p = (TParticle)stack->Particle(lab);
	529	if (p == 0x0) {
	530	cerr<<"Can not get particle "<<lab<<endl;
	531	continue;
	532	}
	533
8c277781	534	AliTrackReference ref=new((itsRefs)[nt]) AliTrackReference(*tpcRef);
	535	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
	536	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
4fa1e629	537	nt++;
	538	}
	539	tpcRefs->Clear();
	540
	541	itsTree.Fill();
	542	itsRefs->Clear();
03248e6d	543
4fa1e629	544	delete[] good;
03248e6d	545
4fa1e629	546	} //*** end of the loop over generated events
	547
	548	itsTree.Write();
	549	itsFile->Close();
	550
	551	delete tpcTree;
	552	tpcFile->Close();
	553
	554	delete rl;
	555	return 0;
03248e6d	556	}
	557
	558