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////////////////////////////////////////
// Read reconstruction ROOT output file
// Plot variables
////////////////////////////////////////
int makeplot(const char* input_fname = "sim_output/sim_emcal_electrons_output.root")
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{
// Setting figures
gROOT->SetStyle("Plain");
gStyle->SetLineWidth(3);
gStyle->SetOptStat("nem");
gStyle->SetPadTickX(1);
gStyle->SetPadTickY(1);
gStyle->SetPadGridX(1);
gStyle->SetPadGridY(1);
gStyle->SetPadLeftMargin(0.14);
gStyle->SetPadRightMargin(0.14);
// Input ROOT file
TFile *f = new TFile(input_fname,"READ");
TTree *t = (TTree *)f->Get("events");
// Set Branch status and addressed
t->SetMakeClass(1);
t->SetBranchStatus("*", 0);
Int_t EcalClusters_;
t->SetBranchStatus("EcalClusters", 1);
t->SetBranchAddress("EcalClusters", &EcalClusters_);
Int_t RecoEcalHits_;
t->SetBranchStatus("RecoEcalHits", 1);
t->SetBranchAddress("RecoEcalHits", &RecoEcalHits_);
const Int_t kMaxEcalClusters = 100000;
Double_t cluster_x_pos[kMaxEcalClusters];
Double_t cluster_y_pos[kMaxEcalClusters];
Double_t cluster_z_pos[kMaxEcalClusters];
Float_t cluster_energy[kMaxEcalClusters];
t->SetBranchStatus("EcalClusters.position.x",1);
t->SetBranchStatus("EcalClusters.position.y",1);
t->SetBranchStatus("EcalClusters.position.z",1);
t->SetBranchStatus("EcalClusters.energy",1);
t->SetBranchAddress("EcalClusters.position.x",cluster_x_pos);
t->SetBranchAddress("EcalClusters.position.y",cluster_y_pos);
t->SetBranchAddress("EcalClusters.position.z",cluster_z_pos);
t->SetBranchAddress("EcalClusters.energy",cluster_energy);
const Int_t kMaxRecoEcalHits = 100000;
Double_t rec_x_pos[kMaxRecoEcalHits];
Double_t rec_y_pos[kMaxRecoEcalHits];
Double_t rec_energy[kMaxRecoEcalHits];
t->SetBranchStatus("RecoEcalHits.position.x",1);
t->SetBranchStatus("RecoEcalHits.position.y",1);
t->SetBranchStatus("RecoEcalHits.energy",1);
t->SetBranchAddress("RecoEcalHits.position.x",rec_x_pos);
t->SetBranchAddress("RecoEcalHits.position.y",rec_y_pos);
t->SetBranchAddress("RecoEcalHits.energy",rec_energy);
// Setting for Canvas
TCanvas *c1 = new TCanvas("c1", "c1", 500, 500);
TCanvas *c2 = new TCanvas("c2", "c2", 500, 500);
TCanvas *c3 = new TCanvas("c3", "c3", 500, 500);
TCanvas *c4 = new TCanvas("c4", "c4", 500, 500);
TCanvas *c5 = new TCanvas("c5", "c5", 500, 500);
TCanvas *c6 = new TCanvas("c6", "c6", 500, 500);
TCanvas *c7 = new TCanvas("c7", "c7", 500, 500);
TCanvas *c8 = new TCanvas("c8", "c8", 500, 500);
TCanvas *c9 = new TCanvas("c9", "c9", 500, 500);
// Declare histograms
TH1D *h1 = new TH1D("h1","Scattering Angle(#theta)", 100,130.0,180.0);
TH1D *h2 = new TH1D("h2","Pseudo-rapidity(#eta)", 100,-5.0,0.0);
TH2D *h3 = new TH2D("h3","Cluster E vs Pseudo-rapidity", 100,-0.5,30.5,100,-5.0,0.0);
TH1D *h4 = new TH1D("h4","Reconstructed energy per event", 100,-0.5,30.5);
TH1D *h5 = new TH1D("h5","Number of Clusters per event", 5,-0.5,4.5);
TH1D *h6 = new TH1D("h6","Scattering Angle(#theta) with CUT", 100,130.0,180.0);
TH1D *h7 = new TH1D("h7","Pseudo-rapidity(#eta) with CUT", 100,-5.0,0.0);
TH2D *h8 = new TH2D("h8","Cluster Hit Position", 62,-62.0,62.0,62,-62.0,62.0);
TH2D *h9 = new TH2D("h9","All Hit Position", 62,-62.0,62.0,62,-62.0,62.0);
// Declare ellipse for boundary of crystal calorimeter
TEllipse *ell1 = new TEllipse(0.0, 0.0, 60.0, 60.0);
ell1->SetFillStyle(4000);
TEllipse *ell2 = new TEllipse(0.0, 0.0, 12.0, 12.0);
ell2->SetFillStyle(4000);
// Total number of entries
Int_t nentries = t->GetEntries();
// Variables are used in calculation
Double_t r; // Radius [cm]
Double_t phi; // Azimuth [degree]
Double_t theta; // Inclination [degree]
Double_t eta; // Pseudo-rapidity [unitless]
Float_t cluster_e; // Cluster energy [GeV]
Float_t total_cluster_e;// Add up clusters per event [GeV]
Double_t total_thr_e; // Thrown energy [GeV]
// Loop over event by event
for (int ievent = 0; ievent < nentries; ievent++)
{
t->GetEntry(ievent);
Int_t ncluster = EcalClusters_;
Int_t nreconhits = RecoEcalHits_;
total_cluster_e = 0.0;
h5->Fill(ncluster, 1.0);
// Loop over cluster by cluster
for (int icluster=0; icluster < ncluster; icluster++)
{
r = TMath::Sqrt((cluster_x_pos[icluster]*cluster_x_pos[icluster]) +
(cluster_y_pos[icluster]*cluster_y_pos[icluster]) +
(cluster_z_pos[icluster]*cluster_z_pos[icluster]));
phi = TMath::ATan(cluster_y_pos[icluster]/cluster_x_pos[icluster]) * TMath::RadToDeg();
theta = TMath::ACos(cluster_z_pos[icluster] / r) * TMath::RadToDeg();
eta = -1.0 * TMath::Log(TMath::Tan((theta*TMath::DegToRad())/2.0));
cluster_e = cluster_energy[icluster] / 1.e+3;
total_cluster_e += cluster_e;
}
// Select events with one cluster
if(ncluster == 1)
{
h1->Fill(theta, 1.0);
h2->Fill(eta, 1.0);
h3->Fill(cluster_e, eta, 1.0);
h4->Fill(total_cluster_e, 1.0);
h8->Fill(cluster_x_pos[0],cluster_y_pos[0], 1.0);
if(total_cluster_e > 0.5)
{
h6->Fill(theta, 1.0);
h7->Fill(eta, 1.0);
}
}
// Loop over hit by hit
for(int ireconhit=0; ireconhit < nreconhits; ireconhit++)
h9->Fill(rec_x_pos[ireconhit],rec_y_pos[ireconhit], 1.0);
}
// Drawing and Saving figures
c1->cd();
h1->SetLineColor(kBlue);
h1->SetLineWidth(2);
h1->GetYaxis()->SetRangeUser(0.0,h1->GetMaximum()+10.0);
h1->GetXaxis()->SetTitle("#theta [degree]");
h1->GetYaxis()->SetTitle("events");
h1->GetYaxis()->SetTitleOffset(1.4);
h1->DrawClone();
c1->SaveAs("results/electron_theta_hist_0GeVto30GeV.png");
c1->SaveAs("results/electron_theta_hist_0GeVto30GeV.pdf");
c2->cd();
h2->SetLineColor(kBlue);
h2->SetLineWidth(2);
h2->GetYaxis()->SetRangeUser(0.0,h2->GetMaximum()+10.0);
h2->GetXaxis()->SetTitle("#eta");
h2->GetYaxis()->SetTitle("events");
h2->GetYaxis()->SetTitleOffset(1.4);
h2->DrawClone();
c2->SaveAs("results/electron_eta_hist_0GeVto30GeV.png");
c2->SaveAs("results/electron_eta_hist_0GeVto30GeV.pdf");
c3->cd();
h3->GetXaxis()->SetTitle("Cluster energy [GeV]");
h3->GetYaxis()->SetTitle("#eta");
h3->GetYaxis()->SetTitleOffset(1.4);
h3->DrawClone("COLZ");
c3->SaveAs("results/eletron_E_vs_eta_hist_0GeVto30GeV.png");
c3->SaveAs("results/eletron_E_vs_eta_hist_0GeVto30GeV.pdf");
c4->cd();
c4->SetLogy(1);
h4->SetLineColor(kBlue);
h4->SetLineWidth(2);
h4->GetXaxis()->SetTitle("reconstructed energy [GeV]");
h4->GetYaxis()->SetTitle("events");
h4->GetYaxis()->SetTitleOffset(1.4);
h4->DrawClone();
c4->SaveAs("results/electron_Erec_hist_0GeVto30GeV.png");
c4->SaveAs("results/electron_Erec_hist_0GeVto30GeV.pdf");
c5->cd();
c5->SetLogy(1);
h5->SetLineColor(kBlue);
h5->SetLineWidth(2);
h5->GetXaxis()->SetTitle("Number of Clusters");
h5->GetYaxis()->SetTitle("events");
h5->GetYaxis()->SetTitleOffset(1.4);
h5->DrawClone();
c5->SaveAs("results/electron_ncluster_hist_0GeVto30GeV.png");
c5->SaveAs("results/electron_ncluster_hist_0GeVto30GeV.pdf");
c6->cd();
h6->SetLineColor(kBlue);
h6->SetLineWidth(2);
h6->GetYaxis()->SetRangeUser(0.0,h1->GetMaximum()+10.0);
h6->GetXaxis()->SetTitle("#theta [degree]");
h6->GetYaxis()->SetTitle("events");
h6->GetYaxis()->SetTitleOffset(1.4);
h6->DrawClone();
c6->SaveAs("results/electron_theta_hist_CUT_0GeVto30GeV.png");
c6->SaveAs("results/electron_theta_hist_CUT_0GeVto30GeV.pdf");
c7->cd();
h7->SetLineColor(kBlue);
h7->SetLineWidth(2);
h7->GetYaxis()->SetRangeUser(0.0,h2->GetMaximum()+10.0);
h7->GetXaxis()->SetTitle("#eta");
h7->GetYaxis()->SetTitle("events");
h7->GetYaxis()->SetTitleOffset(1.4);
h7->DrawClone();
c7->SaveAs("results/electron_eta_hist_CUT_0GeVto30GeV.png");
c7->SaveAs("results/electron_eta_hist_CUT_0GeVto30GeV.pdf");
c8->cd();
h8->GetXaxis()->SetTitle("Hit position X [cm]");
h8->GetYaxis()->SetTitle("Hit position Y [cm]");
h8->GetYaxis()->SetTitleOffset(1.4);
h8->DrawClone("COLZ");
ell1->Draw("same");
ell2->Draw("same");
c8->SaveAs("results/electron_hit_pos_cluster_0GeVto30GeV.png");
c8->SaveAs("results/electron_hit_pos_cluster_0GeVto30GeV.pdf");
c9->cd();
h9->GetXaxis()->SetTitle("Hit position X [cm]");
h9->GetYaxis()->SetTitle("Hit position Y [cm]");
h9->GetYaxis()->SetTitleOffset(1.4);
h9->DrawClone("COLZ");
ell1->Draw("same");
ell2->Draw("same");
c9->SaveAs("results/electron_hit_pos_all_0GeVto30GeV.png");
c9->SaveAs("results/electron_hit_pos_all_0GeVto30GeV.pdf");
return 0;
}