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jengbou |
1.1 |
#define NtupleSkim_cc
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#include "NtupleSkim.h"
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#include <TH2.h>
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#include <TStyle.h>
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#include <TCanvas.h>
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#include <TMath.h>
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TString fileName = "test.root";
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void NtupleSkim::Book()
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{
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int NBin = 400;
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double XMin = -1.;
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double XMax = 1.;
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int dzBin = 80;
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double dzMin = -20;
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double dzMax = 20;
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int dxBin = 400;
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double dxMin = -0.2;
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double dxMax = 0.2;
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int phiBin = 63;
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double phiMin = -3.15;
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double phiMax = 3.15;
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int sigBin = 400;
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double sigMin = 0.0;
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double sigMax = 2.0;
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h_d0 = new TH1D("d0","d_{0}",NBin,XMin,XMax);
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h_d0->GetXaxis()->SetTitle("Track d_{0} (cm)");
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h_sigmad0 = new TH1D("sigmad0","#sigma_{d_{0}}",sigBin,sigMin,sigMax);
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h_sigmad0->GetXaxis()->SetTitle("#sigma_{d_{0}}");
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h_d0bs = new TH1D("d0_bs","d_{0} use beam spot",NBin,XMin,XMax);
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h_d0bs->GetXaxis()->SetTitle("Track d_{0}^{bs} (cm)");
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h_z0 = new TH1D("z0","z_{0}",dzBin,dzMin,dzMax);
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h_z0->GetXaxis()->SetTitle("Track z_{0} (cm)");
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h_pt = new TH1D("trk_pt","Track p_{T}",500,0,50);
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h_pt->GetXaxis()->SetTitle("Track p_{T} (GeV/c)");
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h_normChi2 = new TH1D("Normalized_chi2","#chi^{2}/n_{dof}",100,0,20);
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h_normChi2->GetXaxis()->SetTitle("#chi^{2}/n_{dof}");
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h_nPixelHit = new TH1D("nPixelHit","Num of Pixel Hits",8,0,8);
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h_nPixelHit->GetXaxis()->SetTitle("# hits");
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h_nStripHit = new TH1D("nStripHit","Num of Strip Hits",30,0,30);
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h_nStripHit->GetXaxis()->SetTitle("# hits");
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h_d0_phi = new TProfile("d0_phi0","d_{0} vs. #phi_{0}",phiBin,phiMin,phiMax,dxMin,dxMax,"");
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h_d0_phi->GetXaxis()->SetTitle("#phi_{0} (rad)");
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h_d0_phi->GetYaxis()->SetTitle("d_{0} (cm)");
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h_d0bs_phi = new TProfile("d0_phi0_bs","d0(beam spot) vs. #phi0",phiBin,phiMin,phiMax,-0.01,0.01,"");
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h_d0bs_phi->GetXaxis()->SetTitle("#phi_{0} (rad)");
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h_d0bs_phi->GetYaxis()->SetTitle("d_{0}^{bs} (cm)");
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h_vx_dz = new TProfile("vx_dz","v_{x} vs. dz",dzBin,dzMin,dzMax,dxMin,dxMax,"");
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h_vx_dz->GetXaxis()->SetTitle("dz (cm)");
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h_vx_dz->GetYaxis()->SetTitle("v_{x} (cm)");
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h_vy_dz = new TProfile("vy_dz","v_{y} vs. dz",dzBin,dzMin,dzMax,dxMin,dxMax,"");
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h_vy_dz->GetXaxis()->SetTitle("dz (cm)");
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h_vy_dz->GetYaxis()->SetTitle("v_{y} (cm)");
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}
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void NtupleSkim::Loop(int maxEvents)
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{
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// In a ROOT session, you can do:
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// Root > .L NtupleSkim.C++
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// Root > NtupleSkim *t = new NtupleSkim("DQMsource.root")
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// Root > t->Book();
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// Root > t->GetEntry(12); // Fill t data members with entry number 12
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// Root > t->Show(); // Show values of entry 12
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// Root > t->Show(16); // Read and show values of entry 16
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// Root > t->Loop(); // Loop on all entries
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//
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// This is the loop skeleton where:
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// jentry is the global entry number in the chain
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// ientry is the entry number in the current Tree
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// Note that the argument to GetEntry must be:
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// jentry for TChain::GetEntry
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// ientry for TTree::GetEntry and TBranch::GetEntry
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//
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// To read only selected branches, Insert statements like:
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// METHOD1:
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// fChain->SetBranchStatus("*",0); // disable all branches
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// fChain->SetBranchStatus("branchname",1); // activate branchname
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// METHOD2: replace line
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// fChain->GetEntry(jentry); //read all branches
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// by b_branchname->GetEntry(ientry); //read only this branch
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// TH2F *hvxy = new TH2F("vxy","x vers. y vertex",100,-0.4,0.4,100,-0.4,0.4);
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if (fChain == 0) return;
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Long64_t nentries = fChain->GetEntriesFast();
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Int_t nbytes = 0, nb = 0;
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int theevent = 0;
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for (Long64_t jentry=0; jentry<nentries;jentry++) {
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Long64_t ientry = LoadTree(jentry);
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if (ientry < 0) break;
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nb = fChain->GetEntry(jentry);
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nbytes += nb;
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if (nPixelHit > 4 && nStripHit > 8) {
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h_nPixelHit->Fill(nPixelHit);
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h_nStripHit->Fill(nStripHit);
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h_pt->Fill(pt);
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h_d0->Fill(d0);
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h_sigmad0->Fill(sigmad0);
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h_d0bs->Fill(d0bs);
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h_normChi2->Fill(normchi2);
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h_z0->Fill(z0);
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h_vx_dz->Fill(z0,vx);
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h_vy_dz->Fill(z0,vy);
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h_d0_phi->Fill(phi0,d0);
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h_d0bs_phi->Fill(phi0,d0bs);
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theevent++;
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}
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}
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TFile *file0 = new TFile(fileName,"RECREATE");
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h_d0->Write();
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h_d0bs->Write();
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h_z0->Write();
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h_sigmad0->Write();
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h_normChi2->Write();
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h_nPixelHit->Write();
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h_nStripHit->Write();
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h_vx_dz->Write();
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h_vy_dz->Write();
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h_d0_phi->Write();
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h_d0bs_phi->Write();
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file0->cd();
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file0->Close();
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}
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