[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 "AliESDEvent.h"

  #include "AliITSRecPoint.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=".") {
   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,-777,777); 
   hmpt->SetFillColor(6);

   TH1F *hz=(TH1F*)gROOT->FindObject("hz");
   if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777); 


   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.,200.);

   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;
      }
   }
   AliESDEvent* event = new AliESDEvent();
   TTree* esdTree = (TTree*) ef->Get("esdTree");
   if (!esdTree) {
      ::Error("AliITSComparison.C", "no ESD tree found");
      return 6;
   }
   event->ReadFromTree(esdTree);


   //******* Loop over events *********
   Int_t e=0;
   while (esdTree->GetEvent(e)) {
     cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
 
     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;
        for (Int_t i=0; i<nentr; i++) {
           AliESDtrack *t=event->GetTrack(i);
	   UInt_t status=t->GetStatus();

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

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

        Double_t alpha=esd->GetAlpha(),xv,par[5]; 
        esd->GetExternalParameters(xv,par);
        Float_t phi=TMath::ASin(par[2]) + alpha;
        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.);

        Float_t d,z; esd->GetImpactParameters(d,z);
        hmpt->Fill(10000*d);
        hz->Fill(10000*z);

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

        Float_t mom=1./(pt_1*TMath::Cos(lam));
        Float_t dedx=esd->GetITSsignal();
        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;
   delete esdTree;
   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();

   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("ITSRecPoints");
     if (!branch) {
        ::Error("GoodTracksITS","Can't get the clusters branch !"); 
        delete rl;
        return 9;
     }
     TClonesArray dummy("AliITSRecPoint",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;
         while (ncl--) {
            AliITSRecPoint *pnt=(AliITSRecPoint*)clusters->UncheckedAt(ncl);

            Int_t lay=pnt->GetLayer();
            if (lay<0 || lay>5) {
               ::Error("GoodTracksITS","Wrong layer !");
               delete rl;
               return 10;
            }

            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;
            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"
4514157e	32	#include "AliESDEvent.h"
4fa1e629	33
00a7cc50	34	#include "AliITSRecPoint.h"
4fa1e629	35	#include "AliITSLoader.h"
03248e6d	36	#endif
03248e6d	37
4fa1e629	38	Int_t GoodTracksITS(const Char_t *dir=".");
5102bab6	39
c630aafd	40	extern AliRun *gAlice;
4fa1e629	41	extern TBenchmark *gBenchmark;
4fa1e629	42	extern TROOT *gROOT;
c630aafd	43
4fa1e629	44	static Int_t allgood=0;
	45	static Int_t allselected=0;
	46	static Int_t allfound=0;
	47
	48	Int_t AliITSComparisonV2
7e9ae194	49	(Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".") {
4fa1e629	50	gBenchmark->Start("AliITSComparisonV2");
	51
	52	::Info("AliITSComparisonV2.C","Doing comparison...");
88cb7938	53
4fa1e629	54
	55	TH1F hp=(TH1F)gROOT->FindObject("hp");
	56	if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
	57	hp->SetFillColor(4);
	58
	59	TH1F hl=(TH1F)gROOT->FindObject("hl");
	60	if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
	61	hl->SetFillColor(4);
	62
	63	TH1F hpt=(TH1F)gROOT->FindObject("hpt");
	64	if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
	65	hpt->SetFillColor(2);
	66
	67	TH1F hmpt=(TH1F)gROOT->FindObject("hmpt");
	68	if (!hmpt)
49d13e89	69	hmpt=new TH1F("hmpt","Transverse impact parameter",30,-777,777);
4fa1e629	70	hmpt->SetFillColor(6);
	71
	72	TH1F hz=(TH1F)gROOT->FindObject("hz");
49d13e89	73	if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777);
4fa1e629	74
	75
	76
	77	TH1F hgood=(TH1F)gROOT->FindObject("hgood");
	78	if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
	79
	80	TH1F hfound=(TH1F)gROOT->FindObject("hfound");
	81	if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
	82
	83	TH1F hfake=(TH1F)gROOT->FindObject("hfake");
	84	if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
	85
	86	TH1F hg=(TH1F)gROOT->FindObject("hg");
	87	if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
	88	hg->SetLineColor(4); hg->SetLineWidth(2);
	89
	90	TH1F hf=(TH1F)gROOT->FindObject("hf");
	91	if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
	92	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
	93
	94	TH1F he=(TH1F)gROOT->FindObject("he");
	95	if (!he)
4514157e	96	he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,200.);
4fa1e629	97
	98	TH2F hep=(TH2F)gROOT->FindObject("hep");
	99	if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
	100	hep->SetMarkerStyle(8);
	101	hep->SetMarkerSize(0.4);
	102
	103
	104	Char_t fname[100];
	105	sprintf(fname,"%s/GoodTracksITS.root",dir);
	106
	107	TFile *refFile=TFile::Open(fname,"old");
	108	if (!refFile \|\| !refFile->IsOpen()) {
	109	::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)...");
	110	if (GoodTracksITS(dir)) {
	111	::Error("AliITSComparisonV2.C","Can't generate the reference file !");
	112	return 1;
	113	}
c630aafd	114	}
4fa1e629	115	refFile=TFile::Open(fname,"old");
	116	if (!refFile \|\| !refFile->IsOpen()) {
	117	::Error("AliITSComparisonV2.C","Can't open the reference file !");
	118	return 1;
	119	}
	120
	121	TTree itsTree=(TTree)refFile->Get("itsTree");
	122	if (!itsTree) {
	123	::Error("AliITSComparisonV2.C","Can't get the reference tree !");
	124	return 2;
c630aafd	125	}
4fa1e629	126	TBranch *branch=itsTree->GetBranch("ITS");
	127	if (!branch) {
	128	::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
	129	return 3;
03248e6d	130	}
4fa1e629	131	TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
	132	branch->SetAddress(&refs);
	133
03248e6d	134
4fa1e629	135	sprintf(fname,"%s/AliESDs.root",dir);
4fa1e629	136	TFile *ef=TFile::Open(fname);
5102bab6	137	if ((!ef)\|\|(!ef->IsOpen())) {
4fa1e629	138	sprintf(fname,"%s/AliESDits.root",dir);
	139	ef=TFile::Open(fname);
	140	if ((!ef)\|\|(!ef->IsOpen())) {
	141	::Error("AliITSComparisonV2.C","Can't open AliESDits.root !");
	142	return 4;
	143	}
5102bab6	144	}
4514157e	145	AliESDEvent* event = new AliESDEvent();
8b462fd8	146	TTree* esdTree = (TTree*) ef->Get("esdTree");
	147	if (!esdTree) {
	148	::Error("AliITSComparison.C", "no ESD tree found");
	149	return 6;
	150	}
4514157e	151	event->ReadFromTree(esdTree);
4fa1e629	152
	153
	154	//***** Loop over events *******
	155	Int_t e=0;
8b462fd8	156	while (esdTree->GetEvent(e)) {
4fa1e629	157	cout<<endl<<endl<<"******* Processing event number: "<<e<<"*****\n";
4fa1e629	158
4fa1e629	159	Int_t nentr=event->GetNumberOfTracks();
	160	allfound+=nentr;
	161
	162	if (itsTree->GetEvent(e++)==0) {
	163	cerr<<"No reconstructable tracks !\n";
	164	continue;
18856a77	165	}
18856a77	166
4fa1e629	167	Int_t ngood=refs->GetEntriesFast();
4fa1e629	168	allgood+=ngood;
03248e6d	169
4fa1e629	170	const Int_t MAX=15000;
	171	Int_t notf[MAX], nnotf=0;
	172	Int_t fake[MAX], nfake=0;
	173	Int_t mult[MAX], numb[MAX], nmult=0;
	174	Int_t k;
	175	for (k=0; k<ngood; k++) {
	176	AliTrackReference ref=(AliTrackReference)refs->UncheckedAt(k);
	177	Int_t lab=ref->Label(), tlab=-1;
	178	Float_t ptg=TMath::Sqrt(ref->Px()ref->Px() + ref->Py()ref->Py());
03248e6d	179
4fa1e629	180	if (ptg<ptcutl) continue;
4fa1e629	181	if (ptg>ptcuth) continue;
03248e6d	182
4fa1e629	183	allselected++;
f2718ade	184
4fa1e629	185	hgood->Fill(ptg);
03248e6d	186
4fa1e629	187	AliESDtrack *esd=0;
4fa1e629	188	Int_t cnt=0;
4fa1e629	189	for (Int_t i=0; i<nentr; i++) {
	190	AliESDtrack *t=event->GetTrack(i);
	191	UInt_t status=t->GetStatus();
f2718ade	192
4fa1e629	193	if ((status&AliESDtrack::kITSrefit)==0) continue;
4fa1e629	194
4fa1e629	195	Int_t lbl=t->GetLabel();
	196	if (lab==TMath::Abs(lbl)) {
	197	if (cnt==0) {esd=t; tlab=lbl;}
	198	cnt++;
	199	}
	200	}
	201	if (cnt==0) {
	202	notf[nnotf++]=lab;
	203	continue;
	204	} else if (cnt>1){
	205	mult[nmult]=lab;
	206	numb[nmult]=cnt; nmult++;
	207	}
	208
f2718ade	209	if (lab==tlab) hfound->Fill(ptg);
	210	else {
	211	fake[nfake++]=lab;
	212	hfake->Fill(ptg);
	213	}
f2718ade	214
49d13e89	215	Double_t alpha=esd->GetAlpha(),xv,par[5];
	216	esd->GetExternalParameters(xv,par);
	217	Float_t phi=TMath::ASin(par[2]) + alpha;
4fa1e629	218	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
	219	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
	220	Float_t lam=TMath::ATan(par[3]);
	221	Float_t pt_1=TMath::Abs(par[4]);
03248e6d	222
4fa1e629	223	Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
4fa1e629	224	hp->Fill((phi - phig)*1000.);
03248e6d	225
4fa1e629	226	Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
4fa1e629	227	hl->Fill((lam - lamg)*1000.);
03248e6d	228
c84a5e9e	229	Float_t d,z; esd->GetImpactParameters(d,z);
c84a5e9e	230	hmpt->Fill(10000*d);
49d13e89	231	hz->Fill(10000*z);
03248e6d	232
4fa1e629	233	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
03248e6d	234
4fa1e629	235	Float_t mom=1./(pt_1*TMath::Cos(lam));
c84a5e9e	236	Float_t dedx=esd->GetITSsignal();
4fa1e629	237	hep->Fill(mom,dedx,1.);
f2718ade	238
4fa1e629	239	Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
f2718ade	240
4fa1e629	241	if (TMath::Abs(pdg)==211) //pions
4fa1e629	242	if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
03248e6d	243
4fa1e629	244	}
	245
	246	cout<<"\nList of Not found tracks :\n";
	247	for (k=0; k<nnotf; k++){
	248	cout<<notf[k]<<"\t";
	249	if ((k%9)==8) cout<<"\n";
	250	}
	251	cout<<"\n\nList of fake tracks :\n";
	252	for (k=0; k<nfake; k++){
	253	cout<<fake[k]<<"\t";
	254	if ((k%9)==8) cout<<"\n";
	255	}
	256	cout<<"\n\nList of multiple found tracks :\n";
	257	for (k=0; k<nmult; k++) {
	258	cout<<"id. "<<mult[k]
	259	<<" found - "<<numb[k]<<"times\n";
	260	}
	261	cout<<endl;
	262
	263	cout<<"Number of found tracks : "<<nentr<<endl;
	264	cout<<"Number of \"good\" tracks : "<<ngood<<endl;
f2718ade	265
4fa1e629	266	refs->Clear();
4fa1e629	267	} //***** End of the loop over events
4fa1e629	268
8b462fd8	269	delete event;
4514157e	270	delete esdTree;
4fa1e629	271	ef->Close();
	272
	273	delete itsTree;
	274	refFile->Close();
	275
	276	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
	277	if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
	278	cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
	279	cout<<"Total number of found tracks ="<<allfound<<endl;
	280	cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
	281	cout<<endl;
03248e6d	282
	283	gStyle->SetOptStat(111110);
	284	gStyle->SetOptFit(1);
	285
	286	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	287
2d343a94	288	Int_t minc=33;
2d343a94	289
03248e6d	290	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
03248e6d	291	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
2d343a94	292	hp->SetFillColor(4); hp->SetXTitle("(mrad)");
2d343a94	293	if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
03248e6d	294
	295	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	296	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
2d343a94	297	hl->SetXTitle("(mrad)");
2d343a94	298	if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
03248e6d	299
	300	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
	301	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
2d343a94	302	hpt->SetXTitle("(%)");
2d343a94	303	if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
03248e6d	304
	305	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
	306	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
2d343a94	307	hmpt->SetXTitle("(micron)");
	308	if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
	309	hz->Draw("same"); c1->cd();
03248e6d	310
	311
	312	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
	313	p5->SetFillColor(41); p5->SetFrameFillColor(10);
	314	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
	315	hg->Divide(hfound,hgood,1,1.,"b");
	316	hf->Divide(hfake,hgood,1,1.,"b");
	317	hg->SetMaximum(1.4);
	318	hg->SetYTitle("Tracking efficiency");
	319	hg->SetXTitle("Pt (GeV/c)");
	320	hg->Draw();
	321
4fa1e629	322	TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
03248e6d	323	line1->Draw("same");
4fa1e629	324	TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
03248e6d	325	line2->Draw("same");
	326
	327	hf->SetFillColor(1);
	328	hf->SetFillStyle(3013);
	329	hf->SetLineColor(2);
	330	hf->SetLineWidth(2);
	331	hf->Draw("histsame");
	332	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	333	text->SetTextSize(0.05);
	334	text->Draw();
	335	text = new TText(0.453919,1.11408,"Good tracks");
	336	text->SetTextSize(0.05);
	337	text->Draw();
	338
c630aafd	339	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	340	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	341	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	342	he->SetFillColor(2); he->SetFillStyle(3005);
	343	he->SetXTitle("Arbitrary Units");
2d343a94	344	if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
c630aafd	345
	346	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	347	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	348	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	349	hep->Draw(); c1->cd();
2d343a94	350
	351	TFile fc("AliITSComparisonV2.root","RECREATE");
	352	c1->Write();
	353	c2->Write();
	354	fc.Close();
	355
4fa1e629	356	gBenchmark->Stop("AliITSComparisonV2");
	357	gBenchmark->Show("AliITSComparisonV2");
	358
03248e6d	359	return 0;
	360	}
	361
4fa1e629	362
	363
	364	Int_t GoodTracksITS(const Char_t *dir) {
	365	if (gAlice) {
	366	delete gAlice->GetRunLoader();
	367	delete gAlice;//if everything was OK here it is already NULL
	368	gAlice = 0x0;
c630aafd	369	}
88cb7938	370
4fa1e629	371	Char_t fname[100];
	372	sprintf(fname,"%s/galice.root",dir);
	373
	374	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
	375	if (!rl) {
	376	::Error("GoodTracksITS","Can't start session !");
	377	return 1;
c630aafd	378	}
4fa1e629	379
88cb7938	380	rl->LoadgAlice();
88cb7938	381	rl->LoadHeader();
4fa1e629	382	rl->LoadKinematics();
03248e6d	383
4fa1e629	384	AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
	385	if (itsl == 0x0) {
	386	::Error("GoodTracksITS","Can not find the ITSLoader");
	387	delete rl;
	388	return 4;
	389	}
c630aafd	390	itsl->LoadRecPoints();
4fa1e629	391
	392
	393	Int_t nev=rl->GetNumberOfEvents();
	394	::Info("GoodTracksITS","Number of events : %d\n",nev);
	395
	396	sprintf(fname,"%s/GoodTracksTPC.root",dir);
	397	TFile *tpcFile=TFile::Open(fname);
	398	if ((!tpcFile)\|\|(!tpcFile->IsOpen())) {
	399	::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
	400	delete rl;
	401	return 5;
03248e6d	402	}
4fa1e629	403	TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
	404	TTree tpcTree=(TTree)tpcFile->Get("tpcTree");
	405	if (!tpcTree) {
	406	::Error("GoodTracksITS","Can't get the TPC reference tree !");
	407	delete rl;
	408	return 6;
03248e6d	409	}
4fa1e629	410	TBranch *tpcBranch=tpcTree->GetBranch("TPC");
	411	if (!tpcBranch) {
	412	::Error("GoodTracksITS","Can't get the TPC reference branch !");
	413	delete rl;
	414	return 7;
	415	}
	416	tpcBranch->SetAddress(&tpcRefs);
	417
	418	sprintf(fname,"%s/GoodTracksITS.root",dir);
	419	TFile *itsFile=TFile::Open(fname,"recreate");
8c277781	420	TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
4fa1e629	421	TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
	422	itsTree.Branch("ITS",&itsRefs);
	423
	424	//******** Loop over generated events
	425	for (Int_t e=0; e<nev; e++) {
	426	Int_t k;
	427
	428	rl->GetEvent(e); itsFile->cd();
	429
	430	Int_t np = rl->GetHeader()->GetNtrack();
	431	cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
	432
	433	//******** Fill the "good" masks
	434	Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
	435
	436	TTree *cTree=itsl->TreeR();
	437	if (!cTree) {
	438	::Error("GoodTracksITS","Can't get the cluster tree !");
	439	delete rl;
	440	return 8;
03248e6d	441	}
00a7cc50	442	TBranch *branch=cTree->GetBranch("ITSRecPoints");
4fa1e629	443	if (!branch) {
	444	::Error("GoodTracksITS","Can't get the clusters branch !");
	445	delete rl;
	446	return 9;
	447	}
00a7cc50	448	TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
4fa1e629	449	branch->SetAddress(&clusters);
	450
	451	Int_t entr=(Int_t)cTree->GetEntries();
	452	for (k=0; k<entr; k++) {
	453	cTree->GetEvent(k);
	454	Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
4fa1e629	455	while (ncl--) {
00a7cc50	456	AliITSRecPoint pnt=(AliITSRecPoint)clusters->UncheckedAt(ncl);
7e9ae194	457
	458	Int_t lay=pnt->GetLayer();
	459	if (lay<0 \|\| lay>5) {
	460	::Error("GoodTracksITS","Wrong layer !");
	461	delete rl;
	462	return 10;
	463	}
	464
4fa1e629	465	Int_t l0=pnt->GetLabel(0);
	466	if (l0>=np) {
	467	// cerr<<"Wrong label: "<<l0<<endl;
	468	continue;
	469	}
	470	Int_t l1=pnt->GetLabel(1);
	471	if (l1>=np) {
	472	// cerr<<"Wrong label: "<<l1<<endl;
	473	continue;
	474	}
	475	Int_t l2=pnt->GetLabel(2);
	476	if (l2>=np) {
	477	// cerr<<"Wrong label: "<<l2<<endl;
	478	continue;
	479	}
7e9ae194	480	Int_t mask=1<<lay;
4fa1e629	481	if (l0>=0) good[l0]\|=mask;
	482	if (l1>=0) good[l1]\|=mask;
	483	if (l2>=0) good[l2]\|=mask;
	484	}
	485	clusters->Clear();
03248e6d	486	}
88cb7938	487
03248e6d	488
4fa1e629	489	//****** select tracks which are "good" enough
	490	AliStack* stack = rl->Stack();
	491
	492	tpcTree->GetEvent(e);
	493	Int_t nk=tpcRefs->GetEntriesFast();
	494	Int_t nt=0;
	495	for (k=0; k<nk; k++) {
	496	AliTrackReference tpcRef=(AliTrackReference )tpcRefs->UncheckedAt(k);
	497	Int_t lab=tpcRef->Label();
	498	if (good[lab] != 0x3F) continue;
	499	TParticle p = (TParticle)stack->Particle(lab);
	500	if (p == 0x0) {
	501	cerr<<"Can not get particle "<<lab<<endl;
	502	continue;
	503	}
	504
8c277781	505	AliTrackReference ref=new((itsRefs)[nt]) AliTrackReference(*tpcRef);
	506	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
	507	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
4fa1e629	508	nt++;
	509	}
	510	tpcRefs->Clear();
	511
	512	itsTree.Fill();
	513	itsRefs->Clear();
03248e6d	514
4fa1e629	515	delete[] good;
03248e6d	516
4fa1e629	517	} //*** end of the loop over generated events
	518
	519	itsTree.Write();
	520	itsFile->Close();
	521
	522	delete tpcTree;
	523	tpcFile->Close();
	524
	525	delete rl;
	526	return 0;
03248e6d	527	}
	528
	529