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35 f9daq 1
#include "TROOT.h"
2
#include "TFile.h"
3
#include "TBenchmark.h"
4
#include "TH1F.h"
5
#include "TH2F.h"
6
#include "TH3F.h"
7
#include "TCanvas.h"
8
#include "TStyle.h"
9
#include "TPad.h"
10
#include "TF1.h"
11
#include "TGraph.h"
12
#include "TSpectrum.h"
13
#include "stdio.h"
38 f9daq 14
#include "THStack.h"
40 f9daq 15
#include "TPaveText.h"
35 f9daq 16
 
17
#include "include/RTUtil.h"
18
 
19
double getNoise(TH2F*, int, int);
20
 
40 f9daq 21
int biasScan(char filename[256] = "test", char plopt[256]="th", int chXstart=0, int chXend=7, double par1=0.0, double par2=0.0, bool debug = false)
35 f9daq 22
{
23
  const int c_nChannels = 64;
40 f9daq 24
  const double c_xOffset = 0; // mm
25
  const double c_yOffset = 0;
35 f9daq 26
 
27
  int map[8][8]={{32,34,53,55,40,42,61,63},
28
                 {48,50,37,39,56,58,45,47},
29
                 {33,35,52,54,41,43,60,62},
30
                 {49,51,36,38,57,59,44,46},
31
                 {17,19,4,6,25,27,12,14},
32
                 {1,3,20,22,9,11,28,30},
33
                 {16,18,5,7,24,26,13,15},
34
                 {0,2,21,23,8,10,29,31}
35
                };
36
 
38 f9daq 37
  // Set draw style
35 f9daq 38
  RTSetStyle(gStyle);
39
 
40
  // open the file with histograms
41
  char fnameroot[256];
42
  TFile* rootfile;
43
	sprintf(fnameroot, "root/%s.root", filename);
44
	rootfile = (TFile *) gROOT->FindObject(filename);
45
	if(rootfile==NULL) rootfile = new TFile(fnameroot);
46
	if(rootfile==NULL) {
47
	  printf("Cannot open root file %s!!!\n",fnameroot);
48
	  return(0);
49
	}
50
 
51
  if(strstr(plopt, "tdc") != NULL) {
52
    TCanvas *canvas21 = new TCanvas("canvas21","canvas21",1600,800);
53
    TH3F* h0 = (TH3F*) rootfile->Get("h_correctedTDC");
54
	  Int_t binsX = h0->GetXaxis()->GetNbins();
55
    Int_t minX  = h0->GetXaxis()->GetFirst();
56
    Int_t maxX  = h0->GetXaxis()->GetLast()+1;
57
    Int_t binsY = h0->GetYaxis()->GetNbins();
58
    Int_t minY  = h0->GetYaxis()->GetFirst();
59
    Int_t maxY  = h0->GetYaxis()->GetLast()+1;
60
    Int_t binsZ = h0->GetZaxis()->GetNbins();
61
    Int_t minZ  = h0->GetZaxis()->GetFirst();
62
    Int_t maxZ  = h0->GetZaxis()->GetLast()+1;
63
    Double_t xLowUser  = h0->GetXaxis()->GetBinLowEdge(minX);
64
    Double_t xUpUser = h0->GetXaxis()->GetBinUpEdge(maxX);
65
    Double_t yLowUser  = h0->GetYaxis()->GetBinLowEdge(minY);
66
    Double_t yUpUser = h0->GetYaxis()->GetBinUpEdge(maxY);
67
 
68
    canvas21->Divide(2);
69
    //h0->Draw();
70
    canvas21->cd(1);
71
    //h0->Project3D("xy")->Draw("colz");
72
    //canvas21->cd(2);
73
    //h0->Project3D("yz")->Draw("colz");
74
    //canvas21->cd(3);
75
    TH2D* h_correctedTDC = (TH2D*) h0->Project3D("xz");
76
    //h0->GetZaxis()->SetRangeUser(-5,5);
77
    //h0->Project3D("xzo")->Draw("colz");
40 f9daq 78
    //h_correctedTDC->SetTitle("; t [ns]; Channel");
35 f9daq 79
    h_correctedTDC->Draw("colz");
80
    /*
81
    TH1F* tdc1 = new TH1F("tdc1",";TDC [ns];Events",binsZ, minZ, maxZ);
82
    //for(int j=minY; j<maxY; j++) {
83
      for(int k=minZ; k<maxZ; k++) {
84
        double signal = h0->GetBinContent(1,1,k);
85
        tdc1->Fill(k,signal);
86
        //}
87
        }
88
    tdc1->Draw();
89
    */
90
 
91
    TH2D* h_timeWalk = (TH2D*) h0->Project3D("zy");
92
    canvas21->cd(2);
40 f9daq 93
    //h_timeWalk->SetTitle(";Threshold [V]; t [ns]");
35 f9daq 94
    h_timeWalk->Draw("colz");
95
  }
96
 
36 f9daq 97
  if (strstr(plopt, "bias") != NULL) {
98
    TCanvas* canvas01 = new TCanvas("canvas01","",800, 800);
99
    canvas01->cd();
100
    TH2F* h_bias = (TH2F*) rootfile->Get("h_bias");
101
    h_bias->Draw("colz");
50 f9daq 102
 
103
    TCanvas* canvas02 = new TCanvas("canvas02","",800, 800);
104
    //canvas02->Divide(2,2);
105
    canvas02->cd();
106
    TH3F* h_biasThreshold = (TH3F*) rootfile->Get("h_biasThreshold");
107
    //h_biasThreshold->Draw();
108
    //canvas02->cd(2);
109
    //h_biasThreshold->GetXaxis()->SetRange(1,5);
110
    h_biasThreshold->Project3D("zy");
111
    h_biasThreshold_zy->DrawCopy("colz");
112
 
113
    TCanvas* canvas03 = new TCanvas("canvas03","",1200, 1200);
114
    canvas03->Divide(4,4);
115
    int x1=0;
116
    int x2=3;
117
    int y1=0;
118
    int y2=3;
119
    for(int j=x1; j<=x2; j++){
120
    	for(int k=y1; k<=y2; k++){
121
    		int channel = map[j][k];
122
    		int canvasPosition = 4*(4-k-1) + 4 - j;
123
    		canvas03->cd(canvasPosition);
124
    		h_biasThreshold->GetXaxis()->SetRange(channel+1,channel+1);
125
    		char histoName[128];
126
    		sprintf(histoName, "Ch %d", channel);
127
    		h_biasThreshold->Project3D("zy");
128
    		//sprintf(option, "h_biasThresholsd_zy%f", channel);
129
    		h_biasThreshold_zy->SetTitle(histoName);
130
    		h_biasThreshold_zy->DrawCopy("colz");
131
 
132
    	}
133
    }
134
    TCanvas* canvas04 = new TCanvas("canvas04","",1200, 1200);
135
    canvas04->Divide(4,4);
136
    int x1=0;
137
        int x2=3;
138
        int y1=4;
139
        int y2=7;
140
        for(int j=x1; j<=x2; j++){
141
        	for(int k=y1; k<=y2; k++){
142
        		int channel = map[j][k];
143
        		int canvasPosition = 4*(8-k-1) + 4 - j;
144
        		canvas04->cd(canvasPosition);
145
        		h_biasThreshold->GetXaxis()->SetRange(channel+1,channel+1);
146
        		char histoName[128];
147
        		sprintf(histoName, "Ch %d", channel);
148
        		h_biasThreshold->Project3D("zy");
149
        		//sprintf(option, "h_biasThresholsd_zy%f", channel);
150
        		h_biasThreshold_zy->SetTitle(histoName);
151
        		h_biasThreshold_zy->DrawCopy("colz");
152
 
153
        	}
154
        }
155
        TCanvas* canvas05 = new TCanvas("canvas05","",1200, 1200);
156
        canvas05->Divide(4,4);
157
        int x1=4;
158
        int x2=7;
159
        int y1=0;
160
        int y2=3;
161
        for(int j=x1; j<=x2; j++){
162
        	for(int k=y1; k<=y2; k++){
163
        		int channel = map[j][k];
164
        		int canvasPosition = 4*(4-k-1) + 8 - j;
165
        		canvas05->cd(canvasPosition);
166
        		h_biasThreshold->GetXaxis()->SetRange(channel+1,channel+1);
167
        		char histoName[128];
168
        		sprintf(histoName, "Ch %d", channel);
169
        		h_biasThreshold->Project3D("zy");
170
        		//sprintf(option, "h_biasThresholsd_zy%f", channel);
171
        		h_biasThreshold_zy->SetTitle(histoName);
172
        		h_biasThreshold_zy->DrawCopy("colz");
173
 
174
        	}
175
        }
176
 
177
        TCanvas* canvas06 = new TCanvas("canvas06","",1200, 1200);
178
        canvas06->Divide(4,4);
179
        int x1=4;
180
        int x2=7;
181
        int y1=4;
182
        int y2=7;
183
        for(int j=x1; j<=x2; j++){
184
        	for(int k=y1; k<=y2; k++){
185
        		int channel = map[j][k];
186
        		int canvasPosition = 4*(8-k-1) + 8 - j;
187
        		canvas06->cd(canvasPosition);
188
        		h_biasThreshold->GetXaxis()->SetRange(channel+1,channel+1);
189
        		char histoName[128];
190
        		sprintf(histoName, "Ch %d", channel);
191
        		h_biasThreshold->Project3D("zy");
192
        		//sprintf(option, "h_biasThresholsd_zy%f", channel);
193
        		h_biasThreshold_zy->SetTitle(histoName);
194
        		h_biasThreshold_zy->DrawCopy("colz");
195
 
196
        	}
197
        }
198
 
36 f9daq 199
  }
200
 
201
  if (strstr(plopt, "th") != NULL) {
202
   TCanvas* canvas1 = new TCanvas("canvas1","",800,800);
203
   canvas1->cd();
204
   //gPad->SetLogz();
205
   //canvas1->SetLogz();
206
   TH2F* h_threshold = (TH2F*) rootfile->Get("h_threshold");
207
   h_threshold->SetTitleOffset(1.5,"y");
208
   //h_threshold->GetZaxis()->SetRangeUser(0,1000);
209
   h_threshold->SetContour(20);
210
 
211
   h_threshold->Draw("colz");
212
 
213
   TCanvas* canvas2 = new TCanvas("canvas2","",1600,800);
214
   canvas2->Divide(2);
215
   TH1D* h_projection1 = h_threshold->ProjectionY("Ch 37",38,38);
216
   canvas2->cd(1);
217
   //h_projection1->GetYaxis()->SetRangeUser(0,1000);
218
   //gPad->SetLogy();
219
   h_projection1->Draw();
220
 
221
   TH1D* h_projection2 = h_threshold->ProjectionY("Ch 38",39,39);
222
   canvas2->cd(2);
223
   //gPad->SetLogy();
224
   h_projection2->Draw();
225
  }
226
 
35 f9daq 227
  if(strstr(plopt,"16") != NULL)
228
  {
36 f9daq 229
  TH2F* h_threshold = (TH2F*) rootfile->Get("h_bias");
35 f9daq 230
  TCanvas* canvas = new TCanvas("canvas","",1600,1600);
38 f9daq 231
  TCanvas* canvas11 = new TCanvas("canvas11","",800,800);
35 f9daq 232
  canvas->cd();
233
  TVirtualPad *main = new TPad("main","main",0,0,1,1,10,1);
234
  main->Draw();
38 f9daq 235
  main->cd();
35 f9daq 236
  main->Divide(4,4);
237
  for(int i=chXstart; i<chXend; i++) {
40 f9daq 238
    for(int j=(int)par1; j<(int)par2; j++) {
35 f9daq 239
      int channel = map[i][j];
240
      TH1D* h_projection = h_threshold->ProjectionY("",channel+1,channel+1);
40 f9daq 241
      int canvasPosition = i-chXend+4*((int)par2-j)+1;
35 f9daq 242
      printf(" %d ", canvasPosition);
243
      main->cd(canvasPosition);
38 f9daq 244
      gPad->SetMargin(0.08, 0.08, 0.08, 0.08);
35 f9daq 245
      char name[128];
246
      sprintf(name,"Channel %d",channel);
247
      h_projection->SetTitle(name);
38 f9daq 248
      h_projection->GetYaxis()->SetRangeUser(0,10000);
249
      h_projection->DrawCopy("pe1x0");
250
      canvas11->cd();
251
      if (canvasPosition == 1) {
252
        h_projection->SetMarkerStyle(kFullDotMedium);
253
        h_projection->GetYaxis()->SetRangeUser(0,10000);
254
        h_projection->DrawCopy("Pl");
255
        }
256
      else {
257
        h_projection->SetMarkerStyle(kFullDotMedium);
258
        h_projection->SetLineColor(canvasPosition);
259
        h_projection->SetMarkerColor(canvasPosition);
260
        h_projection->SetTitle("");
261
        h_projection->DrawCopy("plsame");
262
        }
35 f9daq 263
    }
38 f9daq 264
 
35 f9daq 265
  }
266
  printf("\n");
267
  }
268
 
36 f9daq 269
  if(strstr(plopt, "1ch") != NULL)
270
  {
271
    TH2F* h_bias = (TH2F*) rootfile->Get("h_bias");
38 f9daq 272
    TCanvas* canvas = new TCanvas("canvas","",800,800);
36 f9daq 273
    canvas->cd();
274
    int channel = map[chXstart][chXend];
275
    TH1D* h_projection = h_bias->ProjectionY("",channel+1,channel+1);
276
    char name[128];
277
    sprintf(name,"Channel %d",channel);
278
    h_projection->SetTitle(name);
38 f9daq 279
    h_projection->SetMarkerStyle(kFullDotMedium);
280
    //h_projection->SetMarkerSize(8);
281
    gPad->SetMargin(0.1,0.1,0.1,0.1);
40 f9daq 282
 
283
 
284
    TF1* f_linear = new TF1("f_linear", "[0] + [1]*x", par1, par2);
285
    f_linear->SetParameter(0, -1);
286
    f_linear->SetParameter(1, 0.1);
287
    f_linear->SetParNames("p0", "p1");
288
    h_projection->Fit(f_linear,"q");
289
    h_projection->Fit(f_linear,"r");
38 f9daq 290
    h_projection->Draw("pe1x0");
40 f9daq 291
 
292
    double p0 = f_linear->GetParameter(0);
293
    double p1 = f_linear->GetParameter(1);
294
    printf("p0 %f p1 %f V_b = %f [V]\n", p0, p1, -p0/p1);
295
    TPaveText *text = new TPaveText(0.15,0.5,0.35,0.56);
296
    text->SetFillColor(0);
297
    text->SetBorderSize(0.1);
298
    text->SetTextSize(0.030);
299
    char string[128];
300
    sprintf(string, "V_b = %2.2f", -p0/p1);
301
    text->AddText(string);
302
    text->Draw("same");
303
    text->Paint();
36 f9daq 304
  }
305
 
35 f9daq 306
  if( strstr(plopt, "all") != NULL ) {
307
    TCanvas *canvas2 = new TCanvas("canvas2","Hits x;;",2000,2000);
308
    TCanvas *canvas3 = new TCanvas("canvas3","Hits y;;",2000,2000);
309
    canvas2->Divide(8,8);
310
    canvas3->Divide(8,8);
311
    TH1F* h_hitsx;
312
    TH1F* h_hitsy;
313
    for(int i=0; i<c_nChannels; i++) {
314
      canvas2->cd(i+1);
315
      char hname[128];
316
      sprintf(hname, "hnhitsx%d", i);
317
      h_hitsx = (TH1F*)rootfile->Get(hname);
318
      h_hitsx->Draw();
319
      canvas3->cd(i+1);
320
      sprintf(hname, "hnhitsy%d", i);
321
      h_hitsy = (TH1F*)rootfile->Get(hname);
322
      h_hitsy->Draw();
323
    }
324
  }
325
 
326
  if( strstr(plopt, "x") != NULL ) {
327
    TCanvas *canvas10 = new TCanvas("canvas10","Ch x;;",500,500);
328
    TH1F* h_hitsx;
329
    canvas10->cd();
330
    char hname[128];
331
    sprintf(hname, "hnhitsx%d", chXstart);
332
    h_hitsx = (TH1F*)rootfile->Get(hname);
333
    h_hitsx->Draw("colz");
334
  }
335
 
336
  if( strstr(plopt, "y") != NULL ) {
337
    TCanvas *canvas11 = new TCanvas("canvas11","Ch x;;",500,500);
338
    TH1F* h_hitsy;
339
    canvas11->cd();
340
    char hname[128];
341
    sprintf(hname, "hnhitsy%d", chXstart);
342
    h_hitsy = (TH1F*)rootfile->Get(hname);
343
    h_hitsy->Draw();
344
  }
40 f9daq 345
 
35 f9daq 346
 
347
  /** Draws the sum of the channels
348
    * Each channel is a 2d plot
349
    * Intended for the study of 1 channel
350
    */
351
  if (strstr(plopt, "2d") != NULL) {
352
 
353
    int nX = chXend - chXstart + 1;
40 f9daq 354
    int nY = (int)par2 - (int)par1 + 1;
35 f9daq 355
    TCanvas* canvas7 = new TCanvas("canvas7","canvas7", nX*400,nY*400);
356
    printf("nx %d ny %d\n",nX,nY);
357
    canvas7->Divide(nX,nY);
40 f9daq 358
    for(int i=(int)par1; i<=(int)par2; i++) {
35 f9daq 359
      for(int j=chXstart; j<=chXend; j++) {
360
      //int canvasPosition = nX*(i-chYstart)+(j-chXstart)+1;
40 f9daq 361
      int canvasPosition = nX*((int)par2-i)+(j-chXstart)+1;
35 f9daq 362
      if (debug) printf("canvas %d\n",canvasPosition);
363
        canvas7->cd(canvasPosition);
364
        char hname[128];
365
        int chPosition = map[j][i];
366
        sprintf(hname, "h2d%d", chPosition);
367
        TH2F* h_2d = (TH2F*)rootfile->Get(hname);
368
        h_2d->Draw("colz");
369
      } //x
370
    }
371
 
372
    // Number of photoelectrons - Poissonian correction
373
    TCanvas* canvas8 = new TCanvas("canvas8","canvas8", 1000,1000);
374
    canvas8->cd();
375
    gStyle->SetOptStat(0);
376
      char hname[128];
377
      int chPosition = map[1][2];
378
      sprintf(hname, "h2d%d", chPosition);
379
      TH2F* h_2d = (TH2F*)rootfile->Get(hname);
380
 
381
      Int_t binsX = h_2d->GetXaxis()->GetNbins();
382
      Int_t minX  = h_2d->GetXaxis()->GetFirst();
383
      Int_t maxX  = h_2d->GetXaxis()->GetLast()+1;
384
      Int_t binsY = h_2d->GetYaxis()->GetNbins();
385
      Int_t minY  = h_2d->GetYaxis()->GetFirst();
386
      Int_t maxY  = h_2d->GetYaxis()->GetLast()+1;
387
      Double_t xLowUser  = h_2d->GetXaxis()->GetBinLowEdge(minX);
388
      Double_t xUpUser   = h_2d->GetXaxis()->GetBinUpEdge(maxX);
389
      Double_t yLowUser  = h_2d->GetYaxis()->GetBinLowEdge(minY);
390
      Double_t yUpUser =   h_2d->GetYaxis()->GetBinUpEdge(maxY);
391
      if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
392
      TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX, xLowUser, xUpUser, binsY, yLowUser, yUpUser);
393
 
394
      double noise = getNoise(h_2d, 1, 89);
395
      if(debug) printf("Noise = %f\n", noise);
396
      for(int k=minX; k<=maxX; k++) {
397
        for(int j=minY; j<=maxY; j++) {
398
          double signal = h_2d->GetBinContent(k,j); // detected
399
          //double p = ((signal - noise) > 1) ? (signal-noise) : 1;
400
          double p = signal - noise;
401
          p /= 10000.;
402
          double p0 = 1.0 - p; // events with zero photons
403
          //double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
404
          double eta = -log(p0); // constant of the poissonian statistics
405
          if (debug) printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);
406
          double x = k*(xUpUser-xLowUser)/double(binsX);
407
          double y = j*(yUpUser-yLowUser)/double(binsY);
408
          h_corrected->Fill(x+3,y+8, eta);
409
        }
410
       }
411
      h_corrected->SetTitle("n_pe = - ln P(0);x[mm];y[mm]");
412
      h_corrected->GetZaxis()->SetRangeUser(-0.05,0.3);
413
      h_corrected->Draw("colz");
414
 
415
      // collection efficiency
416
      int nPoints =0;
417
      double efficiency=0;
418
      for (int i=18; i<=58; i++) {
419
        for (int j=19; j<=59; j++) {
420
          double signal = h_corrected->GetBinContent(i,j);
421
          if(debug) printf("signal %f\n",signal);
422
          efficiency += signal;
423
          nPoints++;
424
        }
425
      }
426
    printf("Signal sum = %f\n   # of points = %d\n",efficiency,nPoints);
427
  }
428
 
429
  /** Draws the sum of channel signals
430
    * Each channel is a 2d ('h2d') histogram
431
    * Suitable for 8x8 chs scan
432
    */
433
  if( strstr(plopt, "sum") != NULL ) {
40 f9daq 434
    int nX = 7 - 0 + 1;
435
    int nY = 7 - 0 + 1;
35 f9daq 436
	  TCanvas* canvas12 = new TCanvas("canvas12","c2",8*200, 8*200);
437
	  canvas12->cd();
438
	  gStyle->SetOptStat(0);
439
 
440
    // final histogram parameters
441
    TH2F* h0 = (TH2F*) rootfile->Get("h2d0");
442
	  Int_t binsX = h0->GetXaxis()->GetNbins();
443
    Int_t minX  = h0->GetXaxis()->GetFirst();
444
    Int_t maxX  = h0->GetXaxis()->GetLast()+1;
445
    Int_t binsY = h0->GetYaxis()->GetNbins();
446
    Int_t minY  = h0->GetYaxis()->GetFirst();
447
    Int_t maxY  = h0->GetYaxis()->GetLast()+1;
448
    Double_t xLowUser  = h0->GetXaxis()->GetBinLowEdge(minX);
449
    Double_t xUpUser = h0->GetXaxis()->GetBinUpEdge(maxX);
450
    Double_t yLowUser  = h0->GetYaxis()->GetBinLowEdge(minY);
451
    Double_t yUpUser = h0->GetYaxis()->GetBinUpEdge(maxY);
452
    if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
453
    TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX,xLowUser,xUpUser, binsY,yLowUser,yUpUser);
454
    TH2F* h[9];
455
 
456
    // 2d histogram noise subtraction and poisson scaling
40 f9daq 457
    for(int i=0; i<=7; i++) {
35 f9daq 458
      for(int j=chXstart; j<=chXend; j++) {
459
        int chPosition = map[j][i];
460
        char hname[128];
461
	      sprintf(hname, "h2d%d", chPosition);
40 f9daq 462
	      int histogram = nX*(i-0)+(j-chXstart);
35 f9daq 463
	      h[histogram] = (TH2F *) rootfile->Get(hname);
464
	      int noise = getNoise(h[histogram], 1, 170);
465
	      if (debug) printf("noise: %d\n",noise);
466
	      for(int k=minX; k<=maxX; k++) {
467
          for(int l=minY; l<=maxY; l++) {
468
            int signal = h[histogram]->GetBinContent(k,l); // detected
469
            //double p = ((signal - noise) > 0.1) ? (signal-noise) : 0.1;
470
            double p = signal - noise;
471
            p /= 10000.;
472
            double p0 = 1.0 - p; // events with zero photons
473
            //double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
474
            double eta = -log(p0);
475
            //printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);
476
            double x = k*(xUpUser-xLowUser)/double(binsX);
477
            double y = l*(yUpUser-yLowUser)/double(binsY);
478
            h_corrected->Fill(x-c_xOffset, y-c_yOffset, signal);
479
          }
480
        }
481
 
482
      }
483
    }
484
 
485
    h_corrected->SetTitle("SiPM#2 n_p.e.;x[mm];y[mm]");
486
    //h_corrected->GetZaxis()->SetRangeUser(-0.05,.30);
487
    h_corrected->Draw("colz");
488
 
489
    TCanvas* canvas13 = new TCanvas("canvas13","canvas13",600,300);
490
    canvas13->Divide(2);
491
    canvas13->cd(1);
492
    //h[16]->Draw("colz");
493
    canvas13->cd(2);
494
    //h[8]->Draw("colz");
495
  }
496
 
497
  return(0);
498
}
499
 
500
/** Function calculates the noise from one channel
501
  * it runs through the bins along x and returns the average value
502
  */
503
double getNoise(TH2F* histogram, int yStart, int yEnd)
504
{
505
  double noise=0;
506
  int count=0;
507
  for(int j=yStart; j<yEnd; j++) {
508
    double value = histogram->GetBinContent(j,2);
509
    //if (noise < value) noise = value;
510
    noise += value;
511
    count++;
512
    }
513
  return (noise/double(count));
514
}
515