source: fact/tools/rootmacros/calscope_average.C@ 20096

#include <TROOT.h>
#include <TCanvas.h>
#include <TProfile.h>
#include <TH2.h>
#include <stdint.h>
#include <cstdio>

#include "fits.h"
#include "FOpenDataFile.c"
#include "FOpenCalibFile.c"

int calscope_average(const char *name, const char *drsname, UInt_t maxevents)
{
//******************************************************************************
//Read a datafile and plot the average over all pixels of the first DRS-calibrated events
//ATTENTION: only works for ROI=1024
//(array indices of the calibration wrong otherwise)
//Example call in ROOT:
//root [74] .x calscope_average.C++("/loc_data/rawdata/2011/09/10/20110910_020.fits","/loc_data/rawdata/2011/09/09/20110909_043.drs.fits",10)
//T. Krähenbühl, September 2011, tpk@phys.ethz.ch
//******************************************************************************

        gROOT->SetStyle("Plain");
        
//-------------------------------------------
//Open the file
//-------------------------------------------
        fits datafile(name);
        if (!datafile)
        {
        cout << "Couldn't properly open the datafile." << endl;
        return 1;
        }
        
//-------------------------------------------
//Get the data
//-------------------------------------------
        vector<int16_t> data;
        vector<int16_t> data_offset;
        unsigned int data_num;
        size_t data_n;
        UInt_t data_px;
        UInt_t data_roi;
        FOpenDataFile(datafile, data, data_offset, data_num, data_n, data_roi, data_px);
        
//-------------------------------------------
//Get the DRS calibration
//-------------------------------------------
        size_t drs_n;
        vector<float> drs_basemean;
        vector<float> drs_gainmean;
        vector<float> drs_triggeroffsetmean;
        FOpenCalibFile(drsname, drs_basemean, drs_gainmean, drs_triggeroffsetmean, drs_n);
        
//-------------------------------------------
//Check the sizes of the data columns
//-------------------------------------------
        if(drs_n!=data_n)
        {
                cout << "Data and DRS file incompatible (Px*ROI disagree)" << endl;
                return 1;
        }
        
//-------------------------------------------
//Create the canvas, plot and title
//-------------------------------------------
        char title[500];
        std::sprintf(title,"Data: %s, DRS: %s",name,drsname);
        TCanvas *canv = new TCanvas( "canv", "Mean values of the first events", 100, 10, 700, 500 );
        TProfile *pix = new TProfile("pix", title, 1024, -0.5, 1023.5);
        pix->GetXaxis()->SetTitle("DRS bin (@2 GHz)");
        pix->GetYaxis()->SetTitle("Amplitude (mV)");
        
//      char ptitle[500];
//      std::sprintf(ptitle,"Data: %s, DRS: %s, Px %i",name,drsname);
//      TCanvas *pcanv = new TCanvas( "pcanv", title, 800, 10, 700, 500 );
//      TH2F *pers = new TH2F("pers",ptitle,1024,-0.5,1023.5,1550,-49.5,1500.5);
//      pers->GetXaxis()->SetTitle("DRS bin (@2 GHz)");
//      pers->GetYaxis()->SetTitle("Amplitude (mV)");
        
//-------------------------------------------
//Iterate over the events
//-------------------------------------------
if((maxevents==0)||(maxevents>datafile.GetNumRows())) maxevents = datafile.GetNumRows();
        for (size_t i=0; i<maxevents; i++)
        {
                datafile.GetRow(i);
                cout << "Event number: " << data_num << endl;
                
//-------------------------------------------
//Iterate over the pixels
//-------------------------------------------
                for (int j=0; j<data_px; j++)
                {
                
//-------------------------------------------
//Iterate over the slices
//-------------------------------------------
                        for (UInt_t k=0; k<data_roi; k++)
                        {
                                UInt_t drs_calib_offset = (k+data_offset[j])%data_roi;
                                //Example values for the various datasets (20110803_015 / 018?9)
                                //data = -1856 +- 30.76
                                //drs_basemean = -906.6 +- 14.73
                                //drs_gainmean = 1696 +- 4
                                //drs_triggeroffsetmean = -0.01 +- 1.532
                                
                                //Gain calibration to mV: 50000(DAC) / drs_gainmean(ADC) * 2500(mV) / 65536(DAC)
                                //Target value: 1.907 V für DRS-Calib files beim DAC-Wert 50000
                                float sample = (data[j*data_roi+k]*2000/4096.-drs_basemean[j*data_roi+drs_calib_offset]-drs_triggeroffsetmean[j*data_roi+k])/drs_gainmean[j*data_roi+drs_calib_offset]*1907.35;
                                pix->Fill(k,sample);
//                              pers->Fill(k,sample);
                        }
                }
        }

//-------------------------------------------
//Draw the data
//-------------------------------------------
        canv->cd();
        pix->Draw();
        canv->Modified();
        canv->Update();
//      pcanv->cd();
//      pers->Draw("col");
//      pcanv->Modified();
//      pcanv->Update();
        return 0;
}