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Commit 524ef7ec authored by Keerthi Nakkalil's avatar Keerthi Nakkalil
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Working codegit add gain_measurement.cpp git add gain_measurement.cpp

parent 4015a449
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gain_measurement.cpp
View file @ 524ef7ec
......@@ -5,7 +5,7 @@ double xmin=850.0,xmax = 1750.0,nbins=450.0;
// and fits the histogram with modified erf function. /
/////////////////////////////////////////////////////////////
TH1D *fit_1d(TH1D* &hist_255,int colors,int markers,int &amplitude,double fitmin,double fitmax)
void fit_1d(TH1D* hist_255,int colors,int markers,int amplitude,double fitmin,double fitmax)
{
hist_255->GetXaxis()->SetTitle("Threshold");
hist_255->GetYaxis()->SetTitle("# signals above the threshold");
......@@ -26,13 +26,13 @@ TH1D *fit_1d(TH1D* &hist_255,int colors,int markers,int &amplitude,double fitmin
fitfunc->SetParameter(0,200.0);
int lastbin1 = hist_255->FindLastBinAbove(200);
double mean = hist_255->GetBinCenter(lastbin1);
cout<<"The initial mean value assigned for the data of amp_0 "<<amplitude<<""<<" is "<<""<<mean<<std::endl;
// cout<<"The initial mean value assigned for the data of amp_0 "<<amplitude<<""<<" is "<<""<<mean<<std::endl;
fitfunc->SetParameter(1,mean);
int lastbin2 = hist_255->FindLastBinAbove(150);
int lastbin3 = hist_255->FindLastBinAbove(50);
int sigma = lastbin3 -lastbin2;
cout<<"The initial noise assigned for the data of amp_0 "<<amplitude<<""<<" is "<<""<<sigma<<std::endl;
// cout<<"The initial noise assigned for the data of amp_0 "<<amplitude<<""<<" is "<<""<<sigma<<std::endl;
fitfunc->SetParameter(2,sigma);
fitfunc->SetLineWidth(2);
......@@ -41,116 +41,61 @@ TH1D *fit_1d(TH1D* &hist_255,int colors,int markers,int &amplitude,double fitmin
hist_255->Fit("fitfunc"," R");
hist_255->GetListOfFunctions()->FindObject("fitfunc")->Draw("same");
hist_255->SetStats(0);
return hist_255;
}
std::vector<TH1D*> gain_measurement(int i, int j)
std::vector<TH1D*> gain_measurement_pixel(int i, int j)
{
int x,y;
//double xmin=850.0,xmax = 1750.0;
std::vector<int>colors={kAzure,kTeal+3,kViolet+3};
std::vector<int>markers={2,3,5};
std::vector<double>fitmin ={1220.,1200.,1150.};
std::vector<double>fitmax={1700.,1420.,1240.};
std::vector<TH1D*>hist_255;
ifstream amp03,amp02,amp01;
std::vector<TH1D*> hist_255;
stringstream sfilename;
sfilename << std::setw(3) << std::setfill('0') << i << "_"
<< std::setw(3) << std::setfill('0') << j <<".dat";
std::cout << sfilename.str() << std::endl;
amp03.open(std::string("amp03/" + sfilename.str()).c_str());
amp02.open(std::string("amp02/" + sfilename.str()).c_str());
amp01.open(std::string("amp01/" + sfilename.str()).c_str());
if(amp03.is_open())
{
cout<<"The data file " << i << "_"<< j << " is opened..."<<std::endl;
TH1D *h3 = (TH1D*)gROOT->FindObject("h3");
delete h3;//to prevent memomory leak
h3 = new TH1D("h3","Threshold gain measurement",nbins,xmin,xmax);
hist_255.push_back(h3);
amp03.clear();
amp03.seekg(118 ,std::ios_base::beg);
while(!amp03.eof())
{
// cout<<"The values from the file amp03 is extracted..."<<std::endl;
amp03>>x>>y;
hist_255.at(0)->Fill(x,y);
}
hist_255.at(0)->Draw("HIST P");
cout<<"histogram with amp03 filled..."<<std::endl;
}
else
{
cout << "Error opening file. Exit." <<std::endl;
}
if(amp02.is_open())
{
cout<<"The data file" << i << "_" << j << " is opened..."<<std::endl;
TH1D *h2 = (TH1D*)gROOT->FindObject("h2");
delete h2;
h2 = new TH1D("h2","Threshold gain measurement",nbins,xmin,xmax);
hist_255.push_back(h2);
amp02.clear();
amp02.seekg(118 ,std::ios_base::beg);
while(!amp02.eof())
{
amp02>>x>>y;
hist_255.at(1)->Fill(x,y);
std::cout << "Filename: " << sfilename.str() << std::endl;
std::vector<std::string> filenames = {
std::string("amp03/" + sfilename.str()),
std::string("amp02/" + sfilename.str()),
std::string("amp01/" + sfilename.str())
};
for(int amp = 0; amp < 3; amp++) {
std::ifstream amplitude_file(filenames.at(amp).c_str());
if(amplitude_file.is_open()) {
cout<<"The data file " << filenames.at(amp)<< " is opened..."<<std::endl;
std::string hist_name = "h" + std::to_string(amp) + "_" + std::to_string(j);
TH1D* h1 = new TH1D(hist_name.c_str(),"Threshold gain measurement",nbins,xmin,xmax);
std::string line;
while(!amplitude_file.eof()) {
std::getline(amplitude_file, line);
if(line.rfind("#", 0) == 0) {
continue;
}
hist_255.at(1)->Draw("HIST SAME P");
}
else
{
cout << "Error opening file. Exit." <<std::endl;
}
if(amp01.is_open())
{
cout<<"The data file " << i << "_" << j << " is opened..."<<std::endl;
TH1D *h1 = (TH1D*)gROOT->FindObject("h1");
delete h1;
h1 = new TH1D("h1","Threshold gain measurement",nbins,xmin,xmax);
std::stringstream s(line);
int x, y;
s >> x >> y;
h1->Fill(x,y);
}
hist_255.push_back(h1);
amp01.clear();
amp01.seekg(114 ,std::ios_base::beg);
while(!amp01.eof())
{
amp01>>x>>y;
hist_255.at(2)->Fill(x,y);
}
hist_255.at(2)->Draw("HIST SAME P");
}
else
{
} else {
cout << "Error opening file. Exit." <<std::endl;
}
cout<<"The size of the vector is :"<<hist_255.size()<<std::endl;
for(int iamp=0;iamp<3;iamp++)
{
fit_1d(hist_255.at(iamp),colors.at(iamp),markers.at(iamp),iamp,fitmin.at(iamp),fitmax.at(iamp));
// cout<<"The mean for amplitude 0 "<<iamp<<" "<<"is :"<<mean<<std::endl;
}
fit_1d(hist_255.at(amp),colors.at(amp),markers.at(amp),amp,fitmin.at(amp),fitmax.at(amp));
}
TLegend *leg = new TLegend(0.7,0.7,0.9,0.9);
leg->AddEntry(hist_255.at(0), "high amplitude","p");
......@@ -165,20 +110,39 @@ std::vector<TH1D*> gain_measurement(int i, int j)
void gain_measurement()
{
TH1D *hist_final = new TH1D("hist_final","Threshold gain measurements",nbins,xmin,xmax);
std::vector<TH1D*>histograms;
int row,col;
THStack* hs = new THStack("hs", "Gain measurements");
std::vector<std::vector<TH1D*>>histograms;
// std::vector<TH1D*>histograms;
for(int row=0;row<256;row++)
for(row=0;row<256;row++) {
for(col=0;col<256;col++) {
if(row==col) {
histograms.push_back(gain_measurement_pixel(row,col));
//cout<<"the size of histogram vector is "<<histograms.size()<<std::endl;
}
}
}
// cout<<"the size of gain measurement vector is "<<gain_measurement_pixel<<std::endl;
cout<<"the size of histogram vector is "<<histograms.size()<<std::endl;
for(int i = 0; i < histograms.size(); i++)
{
for(int col=0;col<256;col++)
if(row==col)
{
histograms.push_back(gain_measurement(row,col));
for(int i=0;i<histograms.size();++i)
{
hist_final->Fill(histograms.at(i)) ;
hist_final->Draw();
}
}
auto pixel_histograms = histograms.at(i);
cout<<"Trying to stack the histograms for pixel " << i << "..."<<std::endl;
for(int j = 0; j < pixel_histograms.size(); j++)
{
hs->Add(pixel_histograms.at(j));
}
}
cout<<"The histograms are added to the stack..."<<std::endl;
//cout<<"the size of histogram vector is "<<histograms.size()<<std::endl;
hs->Draw("HIST P nostack");
}
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