Code extended for all the pixels. Problem in saving the fit parameters. Col...

Code extended for all the pixels. Problem in saving the fit parameters. Col and Row always printing 255 255

Time walk correction/TreeTest.C

@@ -29,7 +29,7 @@ void TreeEnergyWrite(){
 void TreeTPWrite(){
  
   int energy, col, row, pc;
-  double voltage,tot, tot_var, toa, toa_var, time_ref;
+  double voltage,tot, tot_var, toa, toa_var, time_ref,toa_cut,mean,RMS;
   string line_TP;
 
   TFile* Efile = new TFile("Energy_table.root");
@@ -49,7 +49,7 @@ void TreeTPWrite(){
   TPtree->Branch("toa_var",&toa_var,"toa_var/D");
   TPtree->Branch("time_ref",&time_ref,"time_ref/D");
   auto voltageBranch = TPtree->Branch("voltage",&voltage,"voltage/D");// make a new branch and connect it to the same variable as the branch address of the energy tree
-      
+  auto Branch_toacut = TPtree->Branch("toa_cut",&toa_cut,"toa_cut/D");
 
   for(int i = 0; i < ETree->GetEntries(); i++){
     ETree->GetEntry(i);
@@ -74,23 +74,106 @@ void TreeTPWrite(){
 
 	  istringstream ssTP(line_TP);
 	  ssTP >> col >> row >> pc >> tot >> tot_var >> toa >> toa_var >> time_ref;
-	  //  std:: cout << col << " " << row << " " << pulsecount << " " << toa << " " << toa_var << std::endl;
 	  TPtree->Fill();
       } //While loop getline
     }//if statement TPdatafile open
+
+    TPtree->Draw("toa",Form("voltage==(%f)",voltage),"goff");
+    mean = TMath::Mean(TPtree->GetSelectedRows(), TPtree->GetV1());
+    RMS = TMath::RMS(TPtree->GetSelectedRows(), TPtree->GetV1());
+    // std::cout <<" mean " << mean << " RMS " << RMS <<std::endl;
+
+    /* for (int isigma=0; isigma < 15; isigma++){
+      std::cout << " cut at " << isigma << " times the RMS leaves : " 
+      << 100.0*TPtree->GetEntries(Form("toa<(%f) && voltage==(%f)",mean+isigma*RMS,voltage))/TPtree->GetEntries(Form("voltage==(%f)",voltage)) 
+      << " percentage of entries " << std::endl;
+      }*/
+
+    toa_cut = mean + 6*RMS;
+    Branch_toacut->Fill();
+    
   }//For loop GetEntries
 
   //Save only the new version of the tree 
 
   TPtree->Write("",TObject::kOverwrite);
   
-  long N = TPtree->Draw("voltage:toa:sqrt(toa_var) ", "row==1 && col==10 && toa>0", "goff");
-  TGraphErrors *gr = new TGraphErrors(N,TPtree->GetV1(),TPtree->GetV2(),0,TPtree->GetV3());
-  gr->GetXaxis()->SetTitle("Volatge[mV]");
-  gr->GetYaxis()->SetTitle ("time difference[ns]");
-  gr->SetTitle(" ");
-  gr->SetMarkerStyle(7);
-  gr->Draw("AP");
+  TPfile->Close();
+}
+
+
+void timewalkfit(){
+
+
+  // gROOT->Reset();
+  
+  int col, row, pc ;
+  double tot, tot_var, toa, toa_var;
+
+  TFile* TPfile = new TFile("TP.root");
+  TTree* TPtree = (TTree*)TPfile->Get("TPtree");
+  TPtree->SetBranchAddress("col",&col);
+  TPtree->SetBranchAddress("row",&row);
+  TPtree->SetBranchAddress("pc",&pc);
+  TPtree->SetBranchAddress("tot",&tot);
+  TPtree->SetBranchAddress("tot_var",&tot_var);
+  TPtree->SetBranchAddress("toa",&toa);
+  TPtree->SetBranchAddress("toa_var",&toa_var);
+
+
+  for(int i = 0; i < TPtree->GetEntries(); i++){
+
+    TPtree->GetEntry(i);
+    std::cout << col << " " << row << std::endl; //Correct values of col and row printed
+
+    auto N = TPtree->Draw("voltage:toa:sqrt(toa_var)",Form("col==(%i) && row==(%i) && toa>0 && toa<toa_cut", col, row),"goff");
+    // cout << N <<std::endl;
+    TGraphErrors *graph = new TGraphErrors(N,TPtree->GetV1(),TPtree->GetV2(),0,TPtree->GetV3());
+
+    // std::cout << col << " " << row << std::endl; // Always printing 255 255
+    
+    auto fitmin = TMath::MinElement(graph->GetN(),graph->GetX());
+    // std::cout << "fitmin" << fitmin << std::endl;
+    
+    auto fitmax = TMath::MaxElement(graph->GetN(),graph->GetX());
+    // std::cout << "fitmax " << fitmax << std::endl;
+    
+    TF1 *fitfuncTOA = new TF1("fitfuncTOA","(([2]/(x-[0]))+ [1])",fitmin,fitmax);
+    fitfuncTOA->SetParNames("asymtote","offset","curvature");
+    
+    int iymax=TMath::LocMax(graph->GetN(),graph->GetY());
+    // cout << "iymax " << iymax << std::endl;
+    auto ttoa = graph->GetPointX(iymax);
+    // cout << "ttoa" << " " << ttoa << std::endl;;
+    fitfuncTOA->SetParameter(0,ttoa);
+    
+    auto xmax = TMath::MaxElement(graph->GetN(),graph->GetX());
+    auto dtoa = graph->Eval(xmax);
+    // cout << "dtoa" << " " << dtoa <<std::endl;
+    fitfuncTOA->SetParameter(1,dtoa);
+    
+    auto testx = 0.5*fitmax;
+    auto ctoa_y = graph->Eval(testx);
+    auto ctoa = (ctoa_y - dtoa)*(testx - ttoa);
+    // cout << "ctoa" << " " << ctoa <<std::endl;
+    fitfuncTOA->SetParameter(2,ctoa);
+    
+    // gStyle->SetOptFit(1111);
+    // fitfuncTOA->SetLineColor(kRed);
+    graph->Fit(fitfuncTOA,"R");
+    /* graph->GetXaxis()->SetTitle("Volatge[mV]");
+       graph->GetYaxis()->SetTitle ("time difference[ns]");
+       graph->SetTitle(" ");
+       graph->SetMarkerStyle(7);*/
+    // graph->Draw("AP");
+    
+    /* std::ofstream fitpars;
+       fitpars.open("fit_parameters.txt",std::ofstream::app);
+       fitpars << col << "\t" << row << "\t"  << fitfuncTOA->GetParameter(2)
+       << setw(10) << fitfuncTOA->GetParameter(0) << setw(10) << fitfuncTOA->GetParameter(1) << std::endl;*/ //NO chi2/ndf for the time-being!
+   
+  }
+
   TPfile->Close();
 }
 
@@ -98,4 +181,6 @@ void TreeTest(){
 
   TreeEnergyWrite();
   TreeTPWrite();
+  timewalkfit();
+
 }