Time difference [ns] vs Injected voltage [mv] for a single pixel without the fit

Time walk correction/toa_calib.C

+void createfiles(int r, int c){
+
+  std::ifstream Energy_file("Energy_table.dat");
+  std::vector<double>Energy_e = {200,300,400,500,600,700,800,900,1000,1100,1200,
+                                1300,1400,1500,1700,2200,2700,3200,4000,5000,6000,
+				7000,8000,9000,10000,11000,12000,13000,14000};
+  if (Energy_file.is_open()){
+    std::cout << "Energy_table.dat is opened..." << std::endl;
+
+    ofstream file125_125("125_125.txt", ios::ate);//ios::ate- delete the output file before running each time. Otherwise will land with weird error
+    std::string line_1,line_2;
+    int Ecol1,Ecol2,Ecol3, TPcol1,TPcol2,TPcol3;
+    int ctr_E = 0, ctr_TOA = 0;
+    double Ecol4[30] = {0}, tot,tot_var,toa[30] = {0},toa_var[30] = {0},toa_ref ;
+    
+    while(getline(Energy_file,line_1)){
+      istringstream ss1(line_1);
+      ss1 >> Ecol1 >> Ecol2 >> Ecol3 >> Ecol4[ctr_E];
+      // std::cout << "Elements " << Ecol4[ctr_E] << " ctr " << ctr_E << std::endl;
+      ctr_E++;
+    }
+    
+    for(int i= 0; i < Energy_e.size(); i++){
+
+      // cout <<"testing..."<<std::endl;
+      stringstream Sfile;
+      Sfile << Energy_e.at(i) << ".dat";
+      // std::cout << "Files : " << Sfile.str() << std::endl;
+      std::vector<std::string>File_names = {std::string("tp_dat_" + Sfile.str())};
+      for (int j = 0; j < File_names.size(); j++ ) {
+	std::ifstream Data_file(File_names.at(j));
+	if(Data_file.is_open()){
+	  //  std::cout << "The data file " << File_names.at(j) << " is opened ..." << std::endl;
+	  while(getline(Data_file,line_2)){
+	    // cout << " looking at each line ... " <<std::endl;
+	    if(line_2.rfind("#", 0) == 0) {
+	      continue;
+	    }
+
+	    //cout <<" ignoring lines which start with #"<<std::endl;
+	    
+	    istringstream ss2(line_2);
+	    ss2 >> TPcol1 >> TPcol2 >> TPcol3 >> tot >> tot_var >> toa[ctr_TOA] >> toa_var[ctr_TOA];
+	    if (TPcol1==125){
+	      // cout << " checking for row 125..."<<std::endl;
+	      if (TPcol2==125){
+		//	cout << " Checking for row 125 and col 125 ..."<<std::endl;
+		//	std::cout << "Elements " << toa[ctr_TOA] << "\t" << toa_var[ctr_TOA] << std::endl;
+		ctr_TOA++;
+	      }
+	    }
+	  }
+	}
+	else {
+	  std::cout << "Unable to open " <<File_names.at(j) << " file ..." << std::endl;
+	}
+      }
+    }
+
+    for(int k = 0; k < 29; k++){
+      if(toa[k]!=0){
+	file125_125 << Ecol4[k] << "\t" << toa[k] << "\t" <<  sqrt(toa_var[k]) << std::endl;
+      }
+    }
+    cout << " Output file writen..."<<std::endl;
+  }
+
+  else{
+    std:: cout << "Unable to open Energy_table.dat file" <<std::endl;
+  }
+}
+
+
+void toa_calib(){
+  int row = 125, col = 125;
+  createfiles(row,col);
+  std::cout << " Done ..." <<std ::endl;
+}
+
+