112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
#include "TFile.h"
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#include "TTree.h"
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#include "TCanvas.h"
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#include "TH1D.h"
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#include "TLegend.h"
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#include "TString.h"
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#include "TStyle.h"
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#include <iostream>
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void analyze(const char* filename = "SimAnasen1.root")
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{
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gStyle->SetOptStat(1);
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TFile *f = TFile::Open(filename);
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if (!f || f->IsZombie()) {
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std::cerr << "ERROR: cannot open file " << filename << std::endl;
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return;
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}
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TTree *tree = (TTree*)f->Get("tree");
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TTree *tree2 = (TTree*)f->Get("tree2");
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if (!tree) {
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std::cerr << "ERROR: tree not found\n";
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return;
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}
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std::cout << "\n===== BASIC TREE INFO =====\n";
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tree->Print();
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// Event inspection tools
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std::cout << "\n===== FIRST 10 EVENTS =====\n";
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tree->Scan("Tb:TB:anodeID[0]:cathodeID[0]:sx3ID", "", "", 10);
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std::cout << "\n===== SINGLE EVENT EXAMPLE (0) =====\n";
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tree->Show(0);
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// Quick detector gating examples
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std::cout << "\n===== GATED STATS =====\n";
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std::cout << "Events with anodeID[0]==5: "
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<< tree->GetEntries("anodeID[0]==5") << std::endl;
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std::cout << "Events with sx3ID>=0: "
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<< tree->GetEntries("sx3ID>=0") << std::endl;
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// Tb vs TB comparison histogram
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TCanvas *c1 = new TCanvas("c1","Tb vs TB",800,600);
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//set min and max from tree values
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double min = tree->GetMinimum("Tb");
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double max = tree->GetMaximum("TB");
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min = min - max*0.1;
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max = max * 1.1;
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printf("Tb min: %f, TB max: %f\n", min, max);
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TH1D *hTb = new TH1D("hTb","Tb and TB;Energy (MeV);Counts",200,min,max); //arguments are name, title (with axis labels), number of bins, x-min, x-max
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TH1D *hTB = new TH1D("hTB","",200,min,max);
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tree->Draw("Tb>>hTb","","goff");
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tree->Draw("TB>>hTB","","goff");
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hTb->SetLineColor(kRed);
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hTB->SetLineColor(kBlue);
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hTb->Draw("HIST");
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hTB->Draw("HIST SAME");
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TLegend *leg = new TLegend(0.65,0.75,0.88,0.88);
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leg->AddEntry(hTb,"Tb (light)","l");
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leg->AddEntry(hTB,"TB (heavy)","l");
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leg->Draw();
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c1->SaveAs("Tb_TB_compare.png");
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// 4. Detector-gated histogram
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TCanvas *c2 = new TCanvas("c2","Anode gated Tb",800,600);
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double min2 = tree->GetMinimum("Tb");
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double max2 = tree->GetMaximum("Tb");
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min2 = min2 - max2*0.1;
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max2 = max2 * 1.1;
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TH1D *hGate = new TH1D("hGate","Tb (anodeID[0]==5);Energy;Counts",200,min2,max2);
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tree->Draw("Tb>>hGate","anodeID[0]==5","goff");
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hGate->SetLineColor(kGreen+2);
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hGate->Draw("HIST");
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c2->SaveAs("Tb_anode5.png");
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// Tb vs TB correlation (with gate)
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TCanvas *c3 = new TCanvas("c3","Tb vs TB",800,600);
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tree->Draw("TB:Tb>>h2(200,min,max,200,min,max)","sx3ID>=0","COLZ");
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c3->SaveAs("Tb_vs_TB.png");
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// Make gated trees
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TFile *out = new TFile("gated_output.root","RECREATE");
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TTree *t_anode5 = tree->CopyTree("anodeID[0]==5");
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t_anode5->Write("tree_anode5");
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TTree *t_sx3valid = tree->CopyTree("sx3ID>=0");
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t_sx3valid->Write("tree_sx3valid");
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out->Close();
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std::cout << "\n===== DONE =====\n";
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std::cout << "Saved plots + gated trees in gated_output.root\n";
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} |