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TPC: Adds Separation power of pions and electrons with mergable objects. #2343

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merged 8 commits into from
Sep 2, 2024
Merged

TPC: Adds Separation power of pions and electrons with mergable objects. #2343

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1df96a5
Make Mergable
Jun 14, 2024
077412b
changed Separation power to a mergable object
Jun 17, 2024
b9587cb
removed TCanvas
Jun 17, 2024
e9a78fe
Removed Comments
Jun 17, 2024
7ce1502
Directly filled TProfile
Jun 25, 2024
671ba98
Hard coded TString Size to fix MacOS CI problem.
Jul 4, 2024
346edcd
FixedMemoryLeak
Aug 7, 2024
d45de5c
Used built-in getter
Aug 12, 2024
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5 changes: 5 additions & 0 deletions Modules/TPC/include/TPC/PID.h
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@
// QC includes
#include "QualityControl/TaskInterface.h"

//ROOT includes
#include <TProfile.h>

class TH1F;

using namespace o2::quality_control::core;
Expand Down Expand Up @@ -52,6 +55,8 @@ class PID final : public TaskInterface

private:
o2::tpc::qc::PID mQCPID{};
std::unique_ptr<TProfile> mSeparationPower{};
const int nPars = 8; //6 fit parameters + 2 external (seperation power + chi²/ndf)
};

} // namespace o2::quality_control_modules::tpc
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43 changes: 43 additions & 0 deletions Modules/TPC/src/PID.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@
#include <TCanvas.h>
#include <TH1.h>
#include <TH2.h>
#include <TF1.h>
#include <TProfile.h>

// O2 includes
#include "Framework/ProcessingContext.h"
Expand Down Expand Up @@ -58,6 +60,9 @@ void PID::initialize(o2::framework::InitContext& /*ctx*/)
mQCPID.setPIDCuts(cutMinNCluster, cutAbsTgl, cutMindEdxTot, cutMaxdEdxTot, cutMinpTPC, cutMaxpTPC, cutMinpTPCMIPs, cutMaxpTPCMIPs, runAsyncAndTurnOffSomeHistos);
mQCPID.setCreateCanvas(createCanvas);
mQCPID.initializeHistograms();
//mSeparationPower = new TProfile("mSeparationPower", "mSeparationPower", nPars, 0., (float)nPars);
mSeparationPower.reset(new TProfile("mSeparationPower", "mSeparationPower", nPars, 0., (float)nPars));
getObjectsManager()->startPublishing(mSeparationPower.get());
// pass map of vectors of histograms to be beautified!

o2::tpc::qc::helpers::setStyleHistogramsInMap(mQCPID.getMapOfHisto());
Expand Down Expand Up @@ -97,6 +102,44 @@ void PID::monitorData(o2::framework::ProcessingContext& ctx)

void PID::endOfCycle()
{
// ===| Fitting Histogram for separation Power |============================================================
// std::unique_ptr<TF1> fitFunc = std::make_unique<TF1>("fitFunc", "[0]*exp(-0.5*((x-[1])/[2])^2) + [3]*exp(-0.5*((x-[4])/[5])^2)", 0, 100);
TF1 fitFunc("fitFunc", "[0]*exp(-0.5*((x-[1])/[2])^2) + [3]*exp(-0.5*((x-[4])/[5])^2)", 0, 100);

for (auto const& pair : mQCPID.getMapOfHisto()) {
for (auto& hist : pair.second) {
if (pair.first.compare("hdEdxTotMIP") == 0) {
// Define fitting function: sum of two Gaussians with an offset
// Set initial parameters for the fit
fitFunc.SetParameter(0, 3000); // Amplitude of the first Gaussian
fitFunc.SetParameter(1, 50); // Mean of the first Gaussian
fitFunc.SetParLimits(1, 45, 55);
fitFunc.SetParameter(2, 2); // Sigma of the first Gaussian
fitFunc.SetParameter(3, 100); // Amplitude of the second Gaussian
fitFunc.SetParameter(4, 75); // Mean of the second Gaussian
fitFunc.SetParLimits(4, 60, 90);
fitFunc.SetParameter(5, 10); // Sigma of the second Gaussian

// Fit the histogram with the fitting function
hist->Fit(&fitFunc, "QRN");

const TString binLabels[8] = { "Amplitude Pi", "Mean Pi", "Sigma Pi", "Amplitude El", "Mean El", "Sigma El", "Separation Power", "chiSquare/ndf" };

for (int iPar = 0; iPar < nPars - 2; iPar++) {
mSeparationPower->GetXaxis()->SetBinLabel(iPar + 1, binLabels[iPar]);
mSeparationPower->Fill((float)iPar + 0.5, fitFunc.GetParameter(iPar));
}
// Retrieve parameters of the fitted function

const double sepPow = (fitFunc.GetParameter(4) - fitFunc.GetParameter(1)) / (fitFunc.GetParameter(2) / 2. + fitFunc.GetParameter(5) / 2.); //separation power
mSeparationPower->GetXaxis()->SetBinLabel(7, binLabels[6]);
mSeparationPower->GetXaxis()->SetBinLabel(8, binLabels[7]);
mSeparationPower->Fill(6.5, sepPow);
mSeparationPower->Fill(7.5, fitFunc.GetChisquare() / fitFunc.GetNDF());
}
}
}

ILOG(Debug, Devel) << "endOfCycle" << ENDM;
}

Expand Down
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