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Ignore whitespace Rev 39 → Rev 44

/sipmScan/d2r.ini
File deleted
/sipmScan/src/analysisThreshold.cpp
93,7 → 93,7
 
int analysisThreshold(char* dfile0="test", int dbg=0, double tdcCut=5.0)
{
const double c_tdcOffset = 1; // ns
const double c_tdcOffset = 368*TDC_BIN; // ns
printf(" Data to root conversion program\nUsage:\nd2r(input file name <without.dat>, debug on/off, TDC cut +-[ns])\n\n");
230,7 → 230,7
h_correctedTDC = (TH3F*) gROOT->FindObject("h_correctedTDC");
if (h_correctedTDC) delete h_correctedTDC;
nSteps = (run.thUp - run.thLow)/double(run.thStep) + 1;
if (dbg) printf("nSteps %d\n", nSteps);
if (dbg) printf("nSteps %f\n", nSteps);
h_correctedTDC = new TH3F("h_correctedTDC",";SiPM channel; ASD threshold [V]; t [ns]",
NCH,
-0.5,
238,9 → 238,9
nSteps,
(run.thLow - 0.5*run.thStep)/1000.0,
(run.thUp + 0.5*run.thStep)/1000.0,
2*tdcCut*TDC_BIN,
-tdcCut*TDC_BIN,
tdcCut*TDC_BIN);
2*tdcCut+1,
(-tdcCut - 0.5)*TDC_BIN,
(tdcCut + 0.5)*TDC_BIN);
//TH1F* gsumV673A[NCH/16] = new TH1F(hn,hname,256,-0.5,255.5);
for(int i=0; i<NCH; i++) {
/*
/sipmScan/src/analysisBias.cpp
103,7 → 103,7
 
int analysisBias(char* dfile0="test", int dbg=0, double tdcCut=5.0)
{
const double c_tdcOffset = 1; // ns
const double c_tdcOffset = 368*TDC_BIN; // ns
printf(" Data to root conversion program\nUsage:\nd2r(input file name <without.dat>, debug on/off, TDC cut +-[ns])\n\n");
240,20 → 240,7
//htdc = (TH2F*) gROOT->FindObject(hname);
//if (htdc) delete htdc;
//htdc = new TH2F("htdc",";TDC channel;SiPM channel",512,0,512,NCH,0,NCH);
h_correctedTDC = (TH3F*) gROOT->FindObject("h_correctedTDC");
if (h_correctedTDC) delete h_correctedTDC;
nSteps = (run.thUp - run.thLow)/double(run.thStep) + 1;
if (dbg) printf("nSteps %d\n", nSteps);
h_correctedTDC = new TH3F("h_correctedTDC",";SiPM channel; ASD threshold [V]; t [ns]",
NCH,
-0.5,
NCH-0.5,
nSteps,
(run.thLow - 0.5*run.thStep)/1000.0,
(run.thUp + 0.5*run.thStep)/1000.0,
2*tdcCut*TDC_BIN,
-tdcCut*TDC_BIN,
tdcCut*TDC_BIN);
//TH1F* gsumV673A[NCH/16] = new TH1F(hn,hname,256,-0.5,255.5);
for(int i=0; i<NCH; i++) {
/*
296,6 → 283,22
}
nBiasSteps = (run.biasUp - run.biasLow)/double(run.biasStep) + 1;
h_correctedTDC = (TH3F*) gROOT->FindObject("h_correctedTDC");
if (h_correctedTDC) delete h_correctedTDC;
nSteps = (run.thUp - run.thLow)/double(run.thStep) + 1;
if (dbg) printf("nSteps %d\n", nSteps);
h_correctedTDC = new TH3F("h_correctedTDC",";SiPM channel; ASD threshold [V]; t [ns]",
NCH,
-0.5,
NCH-0.5,
nBiasSteps,
(run.biasLow - 0.5*run.biasStep)/1000.0,
(run.biasUp + 0.5*run.biasStep)/1000.0,
2*tdcCut+1,
-tdcCut*TDC_BIN - 0.5*TDC_BIN,
tdcCut*TDC_BIN + 0.5*TDC_BIN);
h_bias = (TH2F*) gROOT->FindObject("h_bias");
if (h_bias) delete h_bias;
h_bias = new TH2F("h_bias",";Channel; Bias [V]", 64, -0.5, 63.5,
392,7 → 395,7
double tdcmax = tdcOffset[channel] + tdcCut;
double time = data*TDC_BIN - tdcOffset[channel];
if(time >= -tdcCut and time <= tdcCut) {
h_correctedTDC->Fill(channel, thr.threshold/1000.0, time);
h_correctedTDC->Fill(channel, bias.bias/1000.0, time);
hnhitsx[channel]->Fill((pos.xset - OFFSETX) * MIKRO_BIN);
hnhitsy[channel]->Fill((pos.yset - OFFSETY) * MIKRO_BIN);
h2d[channel]->Fill((pos.xset - OFFSETX) * MIKRO_BIN, (pos.yset - OFFSETY) * MIKRO_BIN);
497,7 → 500,7
int position(int x, int y, int channel)
{
int flag = 0;
if ( (x > (padCenter[channel][0] - 5000)) and (x < (padCenter[channel][0] + 5000)) and
(y > (padCenter[channel][1] - 5000)) and (y < (padCenter[channel][1] + 5000)) ) flag = 1;
if ( (x > (padCenter[channel][0] - 5040)) and (x < (padCenter[channel][0] + 5040)) and
(y > (padCenter[channel][1] - 5040)) and (y < (padCenter[channel][1] + 5040)) ) flag = 1;
return flag;
}
/sipmScan/src/RTUtil.cpp
1,4 → 1,6
//##########################################################################################
#include "TGaxis.h"
 
void RTSetStyle(TStyle *style)
{
style->SetStatBorderSize(1);
14,16 → 16,20
style->SetMarkerStyle(kFullDotLarge);
//style->SetMarkerSize(7);
style->SetOptStat("e");
style->SetOptFit(1);
style->SetPadTopMargin(0.15);
style->SetPadBottomMargin(0.15);
style->SetPadLeftMargin(0.15);
style->SetPadRightMargin(0.15);
style->SetPadTopMargin(0.12);
style->SetPadBottomMargin(0.12);
style->SetPadLeftMargin(0.12);
style->SetPadRightMargin(0.12);
style->SetTitleOffset(1.3, "y");
gStyle->SetPalette(1, 0);
style->SetPalette(1, 0);
//gStyle->SetPaperSize(TStyle::kA4);
style->SetPaperSize(TStyle::kA4);
TGaxis::SetMaxDigits(4);
}
//##########################################################################################
RTCanvas::RTCanvas()
/sipmScan/src/analysisScan.cpp
30,8 → 30,8
#define NCH 64
#define TDC_BIN 1.0416 // 1 TDC bin in ns
#define MIKRO_BIN 0.49609/1000. //1 mikro step in mm; stage MM3MF
#define OFFSETX 4800 // Right edge of SiPM+Lightguide
#define OFFSETY 3400 // Lower edge of SiPM+Lightguide
#define OFFSETX 15400 // Right edge of SiPM+Lightguide
#define OFFSETY 6400 // Lower edge of SiPM+Lightguide
 
#define RUNREC_ID 1
#define ENDREC_ID 2
103,7 → 103,7
//Chanel information
double tdcOffset[NCH];
sprintf(fullname, "d2r.ini");
sprintf(fullname, "sipmScan.ini");
if( (fp=fopen(fullname, "rt")) == NULL )
printf("Cannot open pad centers file %s !!!\n", fullname);
else {
374,9 → 374,9
hnhitsx[channel]->Fill((pos.xset - OFFSETX) * MIKRO_BIN);
hnhitsy[channel]->Fill((pos.yset - OFFSETY) * MIKRO_BIN);
//h_threshold->Fill(channel, thr.threshold);
if (position(pos.xset-OFFSETX, pos.yset-OFFSETY, channel)) {
//if (position(pos.xset-OFFSETX, pos.yset-OFFSETY, channel)) {
h2d[channel]->Fill((pos.xset - OFFSETX) * MIKRO_BIN, (pos.yset - OFFSETY) * MIKRO_BIN);
}
//}
}
//gV673A->Fill(data,channel);
//gsumV673A[channel/16]->Fill(data);
/sipmScan/sipmScan.ini
0,0 → 1,72
# ch pad_center_x pad_center_y tdc_offset # sipm4, tdc modified 9/4/14 pos added 20/2/14 threshold scan
0 75600 5040 0
1 55440 5040 0
2 75600 15120 0
3 55440 15120 0
4 45360 25200 0
5 65520 25200 0
6 45360 35280 0
7 65520 35280 0
 
8 75600 45360 0
9 55440 45360 -1
10 75600 55440 -1
11 55440 55440 -1
12 45360 65520 -1
13 65520 65520 -1
14 45360 75600 -1
15 65520 75600 -1
 
16 65520 5040 1
17 45360 5040 1
18 65520 15120 1
19 45360 15120 1
20 55440 25200 1
21 75600 25200 1
22 55440 35280 1
23 75600 35280 0
 
24 65520 45360 0
25 45360 45360 0
26 65520 55440 0
27 45360 55440 0
28 55440 65520 0
29 75600 65520 0
30 55440 75600 0
31 75600 75600 3
 
32 5040 5040 0
33 25200 5040 0
34 5040 15120 0
35 25200 15120 0
36 35280 25200 0
37 15120 25200 0
38 35280 35280 1
39 15120 35280 1
 
40 5040 45360 1
41 25200 45360 1
42 5040 55440 1
43 25200 55440 1
44 35280 65520 1
45 15120 65520 1
46 35280 75600 1
47 15120 75600 1
 
48 15120 5040 1
49 35280 5040 1
50 15120 15120 1
51 35280 15120 1
52 25200 25200 0
53 5040 25200 -1
54 25200 35280 -1
55 5040 35280 -1
 
56 15120 45360 -1
57 35280 45360 -1
58 15120 55440 -1
59 35280 55440 -1
60 25200 65520 -1
61 5040 65520 -1
62 25200 75600 -1
63 5040 75600 -1
/sipmScan/examples/thresholdScan.C
60,11 → 60,12
TCanvas* canvas2 = new TCanvas("canvas2","",1600,800);
//canvas2->Divide(2);
TH1D* h_projection1 = h_threshold->ProjectionY("Ch 37",38,38);
int channel = map[chXstart][chXend];
TH1D* h_projection1 = h_threshold->ProjectionY("",channel+1,channel+1);
canvas2->cd();
//h_projection1->GetYaxis()->SetRangeUser(0,1000);
//gPad->SetLogy();
h_projection1->SetTitle("Channel 37;Threshold [V]; Events");
h_projection1->SetTitle(";Threshold [V]; Events");
h_projection1->Draw();
/*
TH1D* h_projection2 = h_threshold->ProjectionY("Ch 38",39,39);
/sipmScan/examples/sipm.C
372,9 → 372,10
h_corrected->Fill(x + c_xOffset, y + c_yOffset, eta);
}
}
//h_corrected->SetTitle("n_pe = - ln P(0);x[mm];y[mm]");
h_corrected->SetTitle(";x[mm];y[mm]");
h_corrected->GetZaxis()->SetRangeUser(-0.01,0.5);
h_corrected->SetTitle("n_pe = - ln P(0);x[mm];y[mm]");
//h_corrected->SetTitle(";x[mm];y[mm]");
gStyle->SetPalette(52,0);
h_corrected->GetZaxis()->SetRangeUser(-0.05,0.7);
h_corrected->SetContour(50);
h_corrected->Draw("colz");
/sipmScan/examples/tdc.C
75,19 → 75,22
h_correctedTDC->Draw("colz");
TCanvas* canvas3 = new TCanvas("canvas3","canvas3",800,800);
canvas2->cd(2);
TH1D* h_allTDCbins = h_correctedTDC->ProjectionX("", 1, 64);
h_allTDCbins->Draw();
/*
int binY = map[chX][chY];
TH1D* channelY = h_correctedTDC->ProjectionX("",binY+1,binY+1);
//channelY->SetStats(0);
channelY->SetStats(0);
char title[256];
sprintf(title,"Channel %d;t [ns];Events", binY);
channelY->SetTitle(title);
channelY->GetYaxis()->SetTitleOffset(1.7);
//TAxis* xAxis = h_correctedTDC->GetXaxis();
//int range = xAxis->GetBinUpEdge(xAxis->GetLast()+1);
//channelY->GetXaxis()->SetRangeUser(-range, range);
TAxis* xAxis = h_correctedTDC->GetXaxis();
int range = xAxis->GetBinUpEdge(xAxis->GetLast()+1);
channelY->GetXaxis()->SetRangeUser(-range, range);
channelY->Draw();
/*
 
TF1* f_gaus1 = new TF1("f_gaus1","[0] + gaus(1)", rangeLeft,rangeRight);
TF1* f_gaus2 = new TF1("f_gaus2","[0] + gaus(1) + gaus(4)",-8,8);
f_gaus1->SetParNames("Linear","Norm","#mu","#sigma");
/sipmScan/examples/biasScan.C
12,16 → 12,17
#include "TSpectrum.h"
#include "stdio.h"
#include "THStack.h"
#include "TPaveText.h"
 
#include "include/RTUtil.h"
 
double getNoise(TH2F*, int, int);
 
int biasScan(char filename[256] = "test", char plopt[256]="th", int chXstart=0, int chXend=7, int chYstart=0, int chYend=7, bool debug = false)
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)
{
const int c_nChannels = 64;
const double c_xOffset = 1; // mm
const double c_yOffset = 0.7;
const double c_xOffset = 0; // mm
const double c_yOffset = 0;
int map[8][8]={{32,34,53,55,40,42,61,63},
{48,50,37,39,56,58,45,47},
74,7 → 75,7
TH2D* h_correctedTDC = (TH2D*) h0->Project3D("xz");
//h0->GetZaxis()->SetRangeUser(-5,5);
//h0->Project3D("xzo")->Draw("colz");
h_correctedTDC->SetTitle("; t [ns]; Channel");
//h_correctedTDC->SetTitle("; t [ns]; Channel");
h_correctedTDC->Draw("colz");
/*
TH1F* tdc1 = new TH1F("tdc1",";TDC [ns];Events",binsZ, minZ, maxZ);
89,7 → 90,7
TH2D* h_timeWalk = (TH2D*) h0->Project3D("zy");
canvas21->cd(2);
h_timeWalk->SetTitle(";Threshold [V]; t [ns]");
//h_timeWalk->SetTitle(";Threshold [V]; t [ns]");
h_timeWalk->Draw("colz");
}
137,10 → 138,10
main->cd();
main->Divide(4,4);
for(int i=chXstart; i<chXend; i++) {
for(int j=chYstart; j<chYend; j++) {
for(int j=(int)par1; j<(int)par2; j++) {
int channel = map[i][j];
TH1D* h_projection = h_threshold->ProjectionY("",channel+1,channel+1);
int canvasPosition = i-chXend+4*(chYend-j)+1;
int canvasPosition = i-chXend+4*((int)par2-j)+1;
printf(" %d ", canvasPosition);
main->cd(canvasPosition);
gPad->SetMargin(0.08, 0.08, 0.08, 0.08);
181,7 → 182,28
h_projection->SetMarkerStyle(kFullDotMedium);
//h_projection->SetMarkerSize(8);
gPad->SetMargin(0.1,0.1,0.1,0.1);
TF1* f_linear = new TF1("f_linear", "[0] + [1]*x", par1, par2);
f_linear->SetParameter(0, -1);
f_linear->SetParameter(1, 0.1);
f_linear->SetParNames("p0", "p1");
h_projection->Fit(f_linear,"q");
h_projection->Fit(f_linear,"r");
h_projection->Draw("pe1x0");
double p0 = f_linear->GetParameter(0);
double p1 = f_linear->GetParameter(1);
printf("p0 %f p1 %f V_b = %f [V]\n", p0, p1, -p0/p1);
TPaveText *text = new TPaveText(0.15,0.5,0.35,0.56);
text->SetFillColor(0);
text->SetBorderSize(0.1);
text->SetTextSize(0.030);
char string[128];
sprintf(string, "V_b = %2.2f", -p0/p1);
text->AddText(string);
text->Draw("same");
text->Paint();
}
if( strstr(plopt, "all") != NULL ) {
223,167 → 245,8
h_hitsy = (TH1F*)rootfile->Get(hname);
h_hitsy->Draw();
}
 
if( strstr(plopt, "share") != NULL ) {
/*TCanvas *canvas4 = new TCanvas("canvas1","canvas1",1000,1000);
int nChannels = chYend-chYstart+1;
int ncols = nChannels/2;
printf("nch %d nch\\2 %d\n", nChannels, ncols);
canvas4->Divide(2,ncols);
TH1F* h_hitsy;
for(int i=chYstart; i<=chYend; i++){
canvas4->cd(i-chYstart+1);
char hname[128];
int chPosition = map[0][i];
sprintf(hname, "hnhitsy%d", chPosition);
h_hitsy = (TH1F*)rootfile->Get(hname);
h_hitsy->Draw();
}*/
TCanvas *canvas4 = new TCanvas("canvas4","canvas4",500,500);
canvas4->cd();
for(int i=chXstart; i<=chXend; i++) {
TH1F* h_hitsx;
char hname[128];
int chPosition = map[i][chYstart];
sprintf(hname, "hnhitsx%d", chPosition);
h_hitsx = (TH1F*)rootfile->Get(hname);
h_hitsx->SetTitle("Scan X;x [mm]; Entries");
h_hitsx->GetYaxis()->SetTitleOffset(1.3);
h_hitsx->SetStats(0);
if (i == chXstart)
h_hitsx->Draw();
else {
h_hitsx->SetLineColor(i+1);
h_hitsx->Draw("same");
}
}
//sprintf(fullname, "ps/%s_Yshare.eps", filename);
//canvas4->SaveAs(fullname);
TCanvas *canvas5 = new TCanvas("canvas5","canvas5",500,500);
canvas5->cd();
for(int i=chYstart; i<=chYend; i++) {
TH1F* h_hitsy;
char hname[128];
int chPosition = map[chXstart][i];
sprintf(hname, "hnhitsy%d", chPosition);
h_hitsy = (TH1F*)rootfile->Get(hname);
h_hitsy->SetTitle("Scan Y;y [mm]; Entries");
h_hitsy->GetYaxis()->SetTitleOffset(1.3);
h_hitsy->SetStats(0);
if (i == chYstart)
h_hitsy->Draw();
else {
h_hitsy->SetLineColor(i+1);
h_hitsy->Draw("same");
}
}
//sprintf(fullname, "ps/%s_Yshare.eps", filename);
//canvas5->SaveAs(fullname);
}
/** Draws the signal from 8 channels in x-row
* for one specific y bin, so the background and cross-talk
* can be estimated.
* Draws also a 2d scan of these channels.
*/
if (strstr(plopt, "line") != NULL) {
TCanvas* canvas6 = new TCanvas("canvas6","canvas6",500,500);
canvas6->cd(0);
gStyle->SetOptStat(0);
TH2F* h0 = (TH2F*) rootfile->Get("h2d0");
Int_t binsX = h0->GetXaxis()->GetNbins();
Int_t minX = h0->GetXaxis()->GetFirst();
Int_t maxX = h0->GetXaxis()->GetLast()+1;
Int_t binsY = h0->GetYaxis()->GetNbins();
Int_t minY = h0->GetYaxis()->GetFirst();
Int_t maxY = h0->GetYaxis()->GetLast()+1;
Double_t xLowUser = h0->GetXaxis()->GetBinLowEdge(minX);
Double_t xUpUser = h0->GetXaxis()->GetBinUpEdge(maxX);
Double_t yLowUser = h0->GetYaxis()->GetBinLowEdge(minY);
Double_t yUpUser = h0->GetYaxis()->GetBinUpEdge(maxY);
if (debug) printf("xLow %f xUp %f\n",xLowUser,xUpUser);
//! 1-dimension position in x vs. hits
TH2F* h[8];
TH1F* h_line[8];
for(int j=0; j<8; j++) {
h_line[j] = new TH1F("h_line", "h_line", binsX, xLowUser, xUpUser);
}
for(int j=chXstart; j<=chXend; j++) {
int chPosition = map[j][chYstart];
char hname[128];
sprintf(hname, "h2d%d", chPosition);
int histogram = j;
h[histogram] = (TH2F *) rootfile->Get(hname);
int noise = getNoise(h[histogram], 1, 160);
for(int k=minX; k<=maxX; k++) {
int l=chYstart*20+12;
//for(int l=12; l<=16; l++) {
double signal = h[histogram]->GetBinContent(k,l);
//signal -= noise;
//signal /= 5*10000.0;
double eta = -log(1 - signal);
double x = k*(xUpUser-xLowUser)/double(binsX);
//double y = l*(yUpUser-yLowUser)/double(binsY);
h_line[j]->Fill(x-c_xOffset, signal);
//}
}
if (j == chXstart) {
h_line[j]->SetTitle("SiPM#2 w/o noise subtraction;x[mm];Hits");
//h_line[j]->GetYaxis()->SetRangeUser(-0.05, 0.3);
//h_line[j]->GetYaxis()->SetRangeUser(-50, 2500);
h_line[j]->Draw("");
}
else {
h_line[j]->SetLineColor(j+1);
h_line[j]->Draw("same");
}
}
//! 2d scan
TCanvas* canvas61 = new TCanvas("canvas61","canvas61",8*200,300);
canvas61->cd();
TH2F* h_corrected = new TH2F("h_corrected","h_corrected",binsX,xLowUser,xUpUser, binsY,yLowUser,yUpUser);
for(int i=chXstart; i<=chXend; i++) {
//int canvasPosition = nX*(i-chYstart)+(j-chXstart)+1;
//int canvasPosition = nX*(chYend-i)+chXstart+1;
//if (debug) printf("canvas %d\n",canvasPosition);
int chPosition = map[i][chYstart];
char hname[128];
sprintf(hname, "h2d%d", chPosition);
int histogram = i;
h[histogram] = (TH2F *) rootfile->Get(hname);
int noise = getNoise(h[histogram], 1, 100);
for(int k=minX; k<=maxX; k++) {
for(int l=minY; l<=maxY; l++) {
int signal = h[histogram]->GetBinContent(k,l); // detected
//p /= 10000.;
//double p0 = 1.0 - p; // events with zero photons
//double eta = (-log(p0) * p0 ) / (1-p0-0.00001);
//double eta = -log(p0);
//printf("p=%f p0=%f log(p0)=%f eta=%f\n",p,p0,log(p0),eta);
//double signal = ((p - noise) > 0.1) ? (p-noise) : 0.1;
double p = signal - noise;
p /= 10000.0;
double eta = -log(1 - p);
double x = k*(xUpUser-xLowUser)/double(binsX);
double y = l*(yUpUser-yLowUser)/double(binsY);
h_corrected->Fill(x-c_xOffset, y-c_yOffset, eta);
}
}
}
h_corrected->SetTitle("SiPM#2 n_pe = - ln(P0);x[mm];y[mm]");
h_corrected->GetZaxis()->SetRangeUser(-0.05,0.30);
h_corrected->Draw("colz");
}
/** Draws the sum of the channels
* Each channel is a 2d plot
* Intended for the study of 1 channel
391,14 → 254,14
if (strstr(plopt, "2d") != NULL) {
int nX = chXend - chXstart + 1;
int nY = chYend - chYstart + 1;
int nY = (int)par2 - (int)par1 + 1;
TCanvas* canvas7 = new TCanvas("canvas7","canvas7", nX*400,nY*400);
printf("nx %d ny %d\n",nX,nY);
canvas7->Divide(nX,nY);
for(int i=chYstart; i<=chYend; i++) {
for(int i=(int)par1; i<=(int)par2; i++) {
for(int j=chXstart; j<=chXend; j++) {
//int canvasPosition = nX*(i-chYstart)+(j-chXstart)+1;
int canvasPosition = nX*(chYend-i)+(j-chXstart)+1;
int canvasPosition = nX*((int)par2-i)+(j-chXstart)+1;
if (debug) printf("canvas %d\n",canvasPosition);
canvas7->cd(canvasPosition);
char hname[128];
471,8 → 334,8
* Suitable for 8x8 chs scan
*/
if( strstr(plopt, "sum") != NULL ) {
int nX = chXend - chXstart + 1;
int nY = chYend - chYstart + 1;
int nX = 7 - 0 + 1;
int nY = 7 - 0 + 1;
TCanvas* canvas12 = new TCanvas("canvas12","c2",8*200, 8*200);
canvas12->cd();
gStyle->SetOptStat(0);
494,12 → 357,12
TH2F* h[9];
// 2d histogram noise subtraction and poisson scaling
for(int i=chYstart; i<=chYend; i++) {
for(int i=0; i<=7; i++) {
for(int j=chXstart; j<=chXend; j++) {
int chPosition = map[j][i];
char hname[128];
sprintf(hname, "h2d%d", chPosition);
int histogram = nX*(i-chYstart)+(j-chXstart);
int histogram = nX*(i-0)+(j-chXstart);
h[histogram] = (TH2F *) rootfile->Get(hname);
int noise = getNoise(h[histogram], 1, 170);
if (debug) printf("noise: %d\n",noise);