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  1. #include "TROOT.h"
  2. #include "TFile.h"
  3. #include "TBenchmark.h"
  4. #include "TH1F.h"
  5. #include "TH2F.h"
  6. #include "TCanvas.h"
  7. #include "TStyle.h"
  8. #include "TPad.h"
  9. #include "TF1.h"
  10. #include "TGraph.h"
  11. #include "TSpectrum.h"
  12. #include "stdio.h"
  13.  
  14. #include "include/RTUtil.h"
  15.  
  16. double getNoise(TH2F*, int, int);
  17.  
  18. int sipm(char filename[256] = "test", char plopt[256]="all", int chXstart=0, int chXend=7, int chYstart=0, int chYend=7, bool debug = false)
  19. {
  20.   const int c_nChannels = 64;
  21.   const double c_xOffset = 0; // mm
  22.   const double c_yOffset = 0;
  23.  
  24.   int map[8][8]={{32,34,53,55,40,42,61,63},
  25.                  {48,50,37,39,56,58,45,47},
  26.                  {33,35,52,54,41,43,60,62},
  27.                  {49,51,36,38,57,59,44,46},
  28.                  {17,19,4,6,25,27,12,14},
  29.                  {1,3,20,22,9,11,28,30},
  30.                  {16,18,5,7,24,26,13,15},
  31.                  {0,2,21,23,8,10,29,31}
  32.                 };
  33.  
  34.   char fnameroot[256];
  35.   TFile* rootfile;
  36.         sprintf(fnameroot, "root/%s.root", filename);
  37.         rootfile = (TFile *) gROOT->FindObject(filename);
  38.         if(rootfile==NULL) rootfile = new TFile(fnameroot);
  39.         if(rootfile==NULL) {
  40.           printf("Cannot open root file %s!!!\n",fnameroot);
  41.           return(0);
  42.         }
  43.  
  44.         // set draw style
  45.         gStyle->SetOptStat("ne");
  46.         gStyle->SetPalette(1, 0);
  47.        
  48.         gStyle->SetPaperSize(TStyle::kA4);
  49.         gStyle->SetStatBorderSize(1);
  50.         gStyle->SetFrameBorderMode(0);
  51.         gStyle->SetFrameFillColor(0);
  52.         gStyle->SetCanvasBorderMode(0);
  53.         gStyle->SetPadBorderMode(0);
  54.         gStyle->SetPadColor(0);
  55.         gStyle->SetCanvasColor(0);
  56.         gStyle->SetStatColor(0);
  57.         gStyle->SetOptFit(11);
  58.         gStyle->SetOptStat();
  59.         gStyle->SetPadRightMargin(0.15);
  60.         gStyle->SetPadLeftMargin(0.12);
  61.         //gStyle->SetTitleYOffset(1.4);
  62.  
  63.  
  64.   if( strstr(plopt, "all") != NULL ) {
  65.     TCanvas *canvas2 = new TCanvas("canvas2","Hits x;;",2000,2000);
  66.     TCanvas *canvas3 = new TCanvas("canvas3","Hits y;;",2000,2000);
  67.     canvas2->Divide(8,8);
  68.     canvas3->Divide(8,8);
  69.     TH1F* h_hitsx;
  70.     TH1F* h_hitsy;
  71.     for(int i=0; i<c_nChannels; i++) {
  72.       canvas2->cd(i+1);
  73.       char hname[128];
  74.       sprintf(hname, "hnhitsx%d", i);
  75.       h_hitsx = (TH1F*)rootfile->Get(hname);
  76.       h_hitsx->Draw();
  77.       canvas3->cd(i+1);
  78.       sprintf(hname, "hnhitsy%d", i);
  79.       h_hitsy = (TH1F*)rootfile->Get(hname);
  80.       h_hitsy->Draw();  
  81.     }
  82.   }
  83.  
  84.   if( strstr(plopt, "x") != NULL ) {
  85.     TCanvas *canvas10 = new TCanvas("canvas10","Ch x;;",500,500);
  86.     TH1F* h_hitsx;
  87.     canvas10->cd();
  88.     char hname[128];
  89.     sprintf(hname, "hnhitsx%d", chXstart);
  90.     h_hitsx = (TH1F*)rootfile->Get(hname);
  91.     h_hitsx->Draw();
  92.   }
  93.  
  94.   if( strstr(plopt, "y") != NULL ) {
  95.     TCanvas *canvas11 = new TCanvas("canvas11","Ch x;;",500,500);
  96.     TH1F* h_hitsy;
  97.     canvas11->cd();
  98.     char hname[128];
  99.     sprintf(hname, "hnhitsy%d", chXstart);
  100.     h_hitsy = (TH1F*)rootfile->Get(hname);
  101.     h_hitsy->Draw();
  102.   }
  103.  
  104.   if( strstr(plopt, "share") != NULL ) {
  105.    /*TCanvas *canvas4 = new TCanvas("canvas1","canvas1",1000,1000);
  106.    int nChannels = chYend-chYstart+1;
  107.    int ncols = nChannels/2;
  108.    printf("nch %d nch\\2 %d\n", nChannels, ncols);
  109.    canvas4->Divide(2,ncols);
  110.    TH1F* h_hitsy;
  111.    for(int i=chYstart; i<=chYend; i++){
  112.      canvas4->cd(i-chYstart+1);
  113.      char hname[128];
  114.      int chPosition = map[0][i];
  115.      sprintf(hname, "hnhitsy%d", chPosition);
  116.      h_hitsy = (TH1F*)rootfile->Get(hname);
  117.      h_hitsy->Draw();
  118.    }*/
  119.    
  120.    TCanvas *canvas4 = new TCanvas("canvas4","canvas4",500,500);
  121.    canvas4->cd();
  122.    for(int i=chXstart; i<=chXend; i++) {
  123.      TH1F* h_hitsx;
  124.      char hname[128];
  125.      int chPosition = map[i][chYstart];
  126.      sprintf(hname, "hnhitsx%d", chPosition);
  127.      h_hitsx = (TH1F*)rootfile->Get(hname);
  128.      h_hitsx->SetTitle("Scan X;x [mm]; Entries");
  129.      h_hitsx->GetYaxis()->SetTitleOffset(1.3);
  130.      h_hitsx->SetStats(0);
  131.      if (i == chXstart)
  132.       h_hitsx->Draw();
  133.      else {
  134.       h_hitsx->SetLineColor(i+1);
  135.       h_hitsx->Draw("same");
  136.      }
  137.    }
  138.    //sprintf(fullname, "ps/%s_Yshare.eps", filename);
  139.          //canvas4->SaveAs(fullname);
  140.    
  141.    TCanvas *canvas5 = new TCanvas("canvas5","canvas5",500,500);
  142.    canvas5->cd();
  143.    for(int i=chYstart; i<=chYend; i++) {
  144.      TH1F* h_hitsy;
  145.      char hname[128];
  146.      int chPosition = map[chXstart][i];
  147.      sprintf(hname, "hnhitsy%d", chPosition);
  148.      h_hitsy = (TH1F*)rootfile->Get(hname);
  149.      h_hitsy->SetTitle("Scan Y;y [mm]; Entries");
  150.      h_hitsy->GetYaxis()->SetTitleOffset(1.3);
  151.      h_hitsy->SetStats(0);
  152.      if (i == chYstart)
  153.       h_hitsy->Draw();
  154.      else {
  155.       h_hitsy->SetLineColor(i+1);
  156.       h_hitsy->Draw("same");
  157.      }
  158.    }
  159.    //sprintf(fullname, "ps/%s_Yshare.eps", filename);
  160.          //canvas5->SaveAs(fullname);
  161.   }
  162.  
  163.   /** Draw one channel in x and y
  164.     * Without and with the noise subtraction
  165.     */
  166.   if (strstr(plopt, "noise") != NULL) {
  167.     TCanvas *canvas51 = new TCanvas("canvas51","canvas51",500,500);
  168.     canvas51->cd();
  169.    
  170.     // Get the filled histogram from scan
  171.     TH1F* h_x;
  172.     char name[32];
  173.     sprintf(name, "hnhitsx%d", chXstart);
  174.     h_x = (TH1F*)rootfile->Get(name);
  175.     h_x->DrawCopy();
  176.    
  177.     TH1F* h_y;
  178.     sprintf(name, "hnhitsy%d", chXstart);
  179.     h_y = (TH1F*)rootfile->Get(name);
  180.    
  181.     // Create and fill corrected histogram
  182.     Int_t binsX = h_x->GetXaxis()->GetNbins();
  183.     if(debug) printf("nBins: %d\n", binsX);
  184.     //Double_t xLowUser  = h_x->GetXaxis()->GetBinLowEdge(1);
  185.     //Double_t xUpUser = h_x->GetXaxis()->GetBinUpEdge(binsX);
  186.     Double_t xLowUser = h_x->GetXaxis()->GetXmin();
  187.     Double_t xUpUser = h_x->GetXaxis()->GetXmax();
  188.     TH1F* h_xCorrected = new TH1F("h_xCorrected",";;",binsX, xLowUser, xUpUser);
  189.     if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
  190.     double noise = h_x->GetBinContent(2);
  191.     for (int jk = 0; jk < binsX; jk++) {
  192.       double signal = h_x->GetBinContent(jk+1);
  193.       signal -= noise;
  194.       double x = h_x->GetXaxis()->GetBinCenter(jk+1);
  195.       h_xCorrected->Fill(x, signal);
  196.     }
  197.     h_xCorrected->SetLineColor(2);
  198.     h_xCorrected->DrawCopy("same");
  199.    
  200.     //Create and fill corrected histogram
  201.     Int_t binsY = h_y->GetXaxis()->GetNbins();
  202.     Double_t yLowUser = h_y->GetXaxis()->GetXmin();
  203.     Double_t yUpUser = h_y->GetXaxis()->GetXmax();
  204.     TH1F* h_yCorrected = new TH1F("h_yCorrected",";;",binsY, yLowUser, yUpUser);
  205.     noise = h_y->GetBinContent(2);
  206.     for (int jk = 0; jk < binsY; jk++) {
  207.       double signal = h_y->GetBinContent(jk+1);
  208.       signal -= noise;
  209.       double x = h_y->GetXaxis()->GetBinCenter(jk+1);
  210.       h_yCorrected->Fill(x, signal);
  211.     }
  212.     TCanvas *canvas52 = new TCanvas("canvas52","canvas52",500,500);
  213.     canvas52->cd();
  214.     h_y->DrawCopy();
  215.     h_yCorrected->SetLineColor(2);
  216.     h_yCorrected->DrawCopy("same");
  217.   }
  218.  
  219.   /** Draws the signal from 8 channels in x-row
  220.     * for one specific y bin, so the background and cross-talk
  221.     * can be estimated.
  222.     * Draws also a 2d scan of these channels.
  223.     */
  224.   if (strstr(plopt, "line") != NULL) {
  225.     TCanvas* canvas6 = new TCanvas("canvas6","canvas6",500,500);
  226.     canvas6->cd(0);
  227.     gStyle->SetOptStat(0);
  228.    
  229.     TH2F* h0 = (TH2F*) rootfile->Get("h2d0");
  230.           Int_t binsX = h0->GetXaxis()->GetNbins();
  231.     Int_t minX  = h0->GetXaxis()->GetFirst();
  232.     Int_t maxX  = h0->GetXaxis()->GetLast()+1;
  233.     Int_t binsY = h0->GetYaxis()->GetNbins();
  234.     Int_t minY  = h0->GetYaxis()->GetFirst();
  235.     Int_t maxY  = h0->GetYaxis()->GetLast()+1;
  236.     Double_t xLowUser  = h0->GetXaxis()->GetBinLowEdge(minX);
  237.     Double_t xUpUser = h0->GetXaxis()->GetBinUpEdge(maxX);
  238.     Double_t yLowUser  = h0->GetYaxis()->GetBinLowEdge(minY);
  239.     Double_t yUpUser = h0->GetYaxis()->GetBinUpEdge(maxY);
  240.     if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
  241.    
  242.     //! 1-dimension position in x vs. hits
  243.     TH2F* h[8];
  244.     TH1F* h_line[8];
  245.     for(int j=0; j<8; j++) {
  246.       h_line[j] = new TH1F("h_line", "h_line", binsX, xLowUser, xUpUser);
  247.     }
  248.    
  249.     for(int j=chXstart; j<=chXend; j++) {
  250.       int chPosition = map[j][chYstart];
  251.       char hname[128];
  252.       sprintf(hname, "h2d%d", chPosition);  
  253.       int histogram = j;
  254.       h[histogram] = (TH2F *) rootfile->Get(hname);
  255.       int noise = getNoise(h[histogram], 1, 160);
  256.       for(int k=minX; k<=maxX; k++) {
  257.         int l=chYstart*20+12;
  258.         //for(int l=12; l<=16; l++) {
  259.           double signal = h[histogram]->GetBinContent(k,l);
  260.           //signal -= noise;
  261.           //signal /= 5*10000.0;
  262.           double eta = -log(1 - signal);
  263.           double x = xLowUser + k*(xUpUser-xLowUser)/double(binsX);
  264.           //double y = l*(yUpUser-yLowUser)/double(binsY);
  265.           h_line[j]->Fill(x-c_xOffset, signal);
  266.         //}
  267.       }
  268.       if (j == chXstart) {
  269.         h_line[j]->SetTitle("SiPM#2 w/o noise subtraction;x[mm];Hits");
  270.         //h_line[j]->GetYaxis()->SetRangeUser(-0.05, 0.3);
  271.         //h_line[j]->GetYaxis()->SetRangeUser(-50, 2500);
  272.         h_line[j]->Draw("");
  273.       }
  274.       else {
  275.         h_line[j]->SetLineColor(j+1);
  276.         h_line[j]->Draw("same");
  277.       }
  278.     }
  279.    
  280.    
  281.     //! 2d scan
  282.     TCanvas* canvas61 = new TCanvas("canvas61","canvas61",8*200,300);
  283.     canvas61->cd();
  284.     TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX,xLowUser,xUpUser, binsY,yLowUser,yUpUser);
  285.     for(int i=chXstart; i<=chXend; i++) {
  286.       //int canvasPosition = nX*(i-chYstart)+(j-chXstart)+1;
  287.       //int canvasPosition = nX*(chYend-i)+chXstart+1;
  288.       //if (debug) printf("canvas %d\n",canvasPosition);
  289.         int chPosition = map[i][chYstart];
  290.         char hname[128];
  291.               sprintf(hname, "h2d%d", chPosition);  
  292.               int histogram = i;
  293.               h[histogram] = (TH2F *) rootfile->Get(hname);
  294.               int noise = getNoise(h[histogram], 1, 100);
  295.              
  296.               for(int k=minX; k<=maxX; k++) {
  297.           for(int l=minY; l<=maxY; l++) {
  298.             int signal = h[histogram]->GetBinContent(k,l); // detected
  299.             //p /= 10000.;
  300.             //double p0 = 1.0 - p; // events with zero photons
  301.             //double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
  302.             //double eta = -log(p0);
  303.             //printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);      
  304.             //double signal = ((p - noise) > 0.1) ? (p-noise) : 0.1;
  305.             double p = signal - noise;
  306.             p /= 10000.0;
  307.             double eta = -log(1 - p);
  308.             //double x = k*(xUpUser-xLowUser)/double(binsX);
  309.             //double y = l*(yUpUser-yLowUser)/double(binsY);
  310.             double x = h[histogram]->GetXaxis()->GetBinCenter(k);
  311.             double y = h[histogram]->GetYaxis()->GetBinCenter(l);
  312.             h_corrected->Fill(x-c_xOffset, y-c_yOffset, eta);
  313.           }
  314.         }
  315.     }
  316.     h_corrected->SetTitle("SiPM#2 n_pe = - ln(P0);x[mm];y[mm]");
  317.     h_corrected->GetZaxis()->SetRangeUser(-0.05,0.30);
  318.     h_corrected->Draw("colz");
  319.    
  320.   }
  321.  
  322.   /** Draws the sum of the channels
  323.     * Each channel is a 2d plot
  324.     * Intended for the study of 1 channel
  325.     *
  326.     * Input: scanned channel coordinates (x,y)
  327.     */
  328.   if (strstr(plopt, "2d") != NULL) {
  329.    
  330.     int nX = 3;
  331.     int nY = 3;
  332.     TCanvas* canvas7 = new TCanvas("canvas7","canvas7", nX*400,nY*400);
  333.     printf("nx %d ny %d\n",nX,nY);
  334.     canvas7->Divide(nX,nY);
  335.     for(int i=chXend-1; i<=chXend+1; i++) {
  336.       for(int j=chXstart-1; j<=chXstart+1; j++) {
  337.       //int canvasPosition = nX*(i-chYstart)+(j-chXstart)+1;
  338.       int canvasPosition = nX*(chXend+1-i) + (j-chXstart+1) +1;
  339.       if (debug) printf("canvas %d\n",canvasPosition);
  340.         canvas7->cd(canvasPosition);
  341.         char hname[128];
  342.         int chPosition = map[j][i];
  343.         sprintf(hname, "h2d%d", chPosition);
  344.         TH2F* h_2d = (TH2F*)rootfile->Get(hname);
  345.         h_2d->Draw("colz");
  346.       } //x
  347.     }
  348.    
  349.     // Number of photoelectrons - Poissonian correction
  350.     TCanvas* canvas8 = new TCanvas("canvas8","canvas8", 1000,1000);
  351.     canvas8->cd();
  352.     gStyle->SetOptStat(0);
  353.       char hname[128];
  354.       int chPosition = map[chXstart][chXend];
  355.       sprintf(hname, "h2d%d", chPosition);
  356.       TH2F* h_2d = (TH2F*)rootfile->Get(hname);
  357.  
  358.       Int_t binsX = h_2d->GetXaxis()->GetNbins();
  359.       Int_t minX  = h_2d->GetXaxis()->GetFirst();
  360.       Int_t maxX  = h_2d->GetXaxis()->GetLast()+1;
  361.       Int_t binsY = h_2d->GetYaxis()->GetNbins();
  362.       Int_t minY  = h_2d->GetYaxis()->GetFirst();
  363.       Int_t maxY  = h_2d->GetYaxis()->GetLast()+1;
  364.       Double_t xLowUser  = h_2d->GetXaxis()->GetXmin();
  365.       Double_t xUpUser   = h_2d->GetXaxis()->GetXmax();
  366.       Double_t yLowUser  = h_2d->GetYaxis()->GetXmin();
  367.       Double_t yUpUser =   h_2d->GetYaxis()->GetXmax();
  368.       if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
  369.       TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX, xLowUser, xUpUser, binsY, yLowUser, yUpUser);
  370.       //TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX, minX, maxX, binsY, minY, maxY);
  371.      
  372.       double noise = getNoise(h_2d, 1, 70);
  373.       if(debug) printf("Noise = %f\n", noise);
  374.       for(int k=minX; k<=maxX; k++) {
  375.         for(int j=minY; j<=maxY; j++) {
  376.           double signal = h_2d->GetBinContent(k,j); // detected
  377.           //double p = ((signal - noise) > 1) ? (signal-noise) : 1;
  378.           double p = signal - noise;
  379.           p /= 10000.;
  380.           double p0 = 1.0 - p; // events with zero photons
  381.           //double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
  382.           double eta = -log(p0); // constant of the poissonian statistics
  383.           if (debug) printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);
  384.           //double x = xLowUser + k*(xUpUser - xLowUser) / double(binsX);
  385.           double x = h_2d->GetXaxis()->GetBinCenter(k);
  386.           //double y = yLowUser + j*(yUpUser-yLowUser)/double(binsY);
  387.           double y = h_2d->GetYaxis()->GetBinCenter(j);
  388.           if (debug) printf("x=%f y=%f\n", x, y);
  389.           h_corrected->Fill(x + c_xOffset, y + c_yOffset, eta);
  390.         }
  391.        }
  392.       //h_corrected->SetTitle("n_pe = - ln P(0);x[mm];y[mm]");
  393.       h_corrected->SetTitle(";x[mm];y[mm]");
  394.       h_corrected->GetZaxis()->SetRangeUser(-0.01,0.5);
  395.       h_corrected->SetContour(50);
  396.       h_corrected->Draw("colz");
  397.      
  398.       // collection efficiency
  399.       int nPoints =0;
  400.       double efficiency=0;
  401.       for (int i=18; i<=58; i++) {
  402.         for (int j=19; j<=59; j++) {
  403.           double signal = h_corrected->GetBinContent(i,j);
  404.           if(debug) printf("signal %f\n",signal);
  405.           efficiency += signal;
  406.           nPoints++;
  407.         }
  408.       }  
  409.     printf("Signal sum = %f\n   # of points = %d\n",efficiency,nPoints);
  410.   }
  411.  
  412.   /** Draws the sum of channel signals
  413.     * Each channel is a 2d ('h2d') histogram
  414.     * Suitable for 8x8 chs scan
  415.     */
  416.   if( strstr(plopt, "sum") != NULL ) {
  417.     int nX = chXend - chXstart + 1;
  418.     int nY = chYend - chYstart + 1;
  419.           TCanvas* canvas12 = new TCanvas("canvas12","c2",8*200, 8*200);
  420.           canvas12->cd();
  421.           gStyle->SetOptStat(0);
  422.  
  423.     // final histogram parameters
  424.     TH2F* h0 = (TH2F*) rootfile->Get("h2d0");
  425.           Int_t binsX = h0->GetXaxis()->GetNbins();
  426.     Int_t minX  = h0->GetXaxis()->GetFirst();
  427.     Int_t maxX  = h0->GetXaxis()->GetLast()+1;
  428.     Int_t binsY = h0->GetYaxis()->GetNbins();
  429.     Int_t minY  = h0->GetYaxis()->GetFirst();
  430.     Int_t maxY  = h0->GetYaxis()->GetLast()+1;
  431.     Double_t xLowUser  = h0->GetXaxis()->GetBinLowEdge(minX);
  432.     Double_t xUpUser = h0->GetXaxis()->GetBinUpEdge(maxX);
  433.     Double_t yLowUser  = h0->GetYaxis()->GetBinLowEdge(minY);
  434.     Double_t yUpUser = h0->GetYaxis()->GetBinUpEdge(maxY);
  435.     if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
  436.     TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX,xLowUser,xUpUser, binsY,yLowUser,yUpUser);
  437.     TH2F* h[nX*nY];
  438.    
  439.     // 2d histogram noise subtraction and poisson scaling
  440.     for(int i=chYstart; i<=chYend; i++) {
  441.       for(int j=chXstart; j<=chXend; j++) {
  442.         int chPosition = map[j][i];
  443.         char hname[128];
  444.               sprintf(hname, "h2d%d", chPosition);  
  445.               int histogram = nX*(i-chYstart)+(j-chXstart);
  446.               h[histogram] = (TH2F *) rootfile->Get(hname);
  447.               int noise = getNoise(h[histogram], 1, 170);
  448.               if (debug) printf("noise: %d\n",noise);
  449.               for(int k=minX; k<=maxX; k++) {
  450.           for(int l=minY; l<=maxY; l++) {
  451.             int signal = h[histogram]->GetBinContent(k,l); // detected
  452.             //double p = ((signal - noise) > 0.1) ? (signal-noise) : 0.1;
  453.             double p = signal - noise;
  454.             p /= 10000.;
  455.             double p0 = 1.0 - p; // events with zero photons
  456.             //double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
  457.             double eta = -log(p0);
  458.             //printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);
  459.             double x = k*(xUpUser-xLowUser)/double(binsX);
  460.             double y = l*(yUpUser-yLowUser)/double(binsY);
  461.             h_corrected->Fill(x-c_xOffset, y-c_yOffset, eta);
  462.           }
  463.         }    
  464.      
  465.       }
  466.     }
  467.  
  468.     h_corrected->SetTitle("SiPM#2 n_p.e.;x[mm];y[mm]");
  469.     h_corrected->GetZaxis()->SetRangeUser(-0.05,.30);
  470.     h_corrected->Draw("colz");
  471.    
  472.     TCanvas* canvas13 = new TCanvas("canvas13","canvas13",600,300);
  473.     canvas13->Divide(2);
  474.     canvas13->cd(1);
  475.     h[16]->Draw("colz");
  476.     canvas13->cd(2);
  477.     h[8]->Draw("colz");
  478.   }
  479.  
  480.   /** Draws the beam profile and fits it with error function
  481.     * on some background function
  482.     */
  483.   if (strstr(plopt, "beam") != NULL) {
  484.  
  485.   TCanvas* canvas9 = new TCanvas("canvas9","canvas9", 500,500);
  486.   canvas9->cd();
  487.   char hname[128];
  488.   sprintf(hname, "hnhitsx%d", 36);
  489.   TH1F* h_laser = (TH1F*)rootfile->Get(hname);
  490.   h_laser->Draw();
  491.   h_laser->SetStats(1);
  492.  
  493.   TF1* err = new TF1("err","[0]+[1]*TMath::Erf((x-[2])/[3])",17.02,17.30);
  494.   err->SetParameter(0,2500);
  495.   err->SetParameter(1, h_laser->GetMaximum());
  496.   err->SetParameter(2, h_laser->GetBinCenter(h_laser->GetMaximumBin()));
  497.   err->SetParameter(3, 0.001);
  498.   h_laser->Fit(err,"qr");
  499.   h_laser->Fit(err,"lr");
  500.   double sigma = err->GetParameter(3);
  501.   printf("sigma = %2.0f um,     FWHM = %2.0f um\n", sigma*1000, 2.35*sigma*1000);
  502.   }
  503.  
  504.   if (strstr(plopt, "map") != NULL) {
  505.     TCanvas* canvas1 = new TCanvas("canvas1","canvas1",1000,1000);
  506.     canvas1->cd();
  507.     TH2I* h_map = new TH2I("h_map","h_map",8,-0.5,7.5,8,-0.5,7.5);
  508.     for (int i=7; i>=0; i--) {
  509.       //for (int j=7; j>=0; j--) printf("(%d, %d) ", j,i);
  510.       for (int j=7; j>=0; j--) {
  511.         printf("%2d (%d %d)\n", map[j][i], j*10080+5040, i*10080+5040);
  512.         h_map->Fill(j,i, map[j][i]);
  513.       }
  514.       printf("\n");
  515.     }
  516.     gStyle->SetOptStat(0);
  517.     h_map->Draw("text");  
  518.   }
  519.    
  520.   return(0);
  521. }
  522.  
  523. /** Function calculates the noise from one channel
  524.   * it runs through the bins along x and returns the average value
  525.   */
  526. double getNoise(TH2F* histogram, int yStart, int yEnd)
  527. {
  528.   double noise=0;
  529.   int count=0;
  530.   for(int j=yStart; j<yEnd; j++) {
  531.     double value = histogram->GetBinContent(j,2);
  532.     //if (noise < value) noise = value;
  533.     noise += value;
  534.     count++;
  535.     }
  536.   return (noise/double(count));
  537. }
  538.  
  539.