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add delta with MC for PV position study #1739

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Merged
noferini merged 3 commits into from
Jan 5, 2023
Merged

add delta with MC for PV position study #1739

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55f7713
add delta with MC for PV position study
ddobrigk Jan 2, 2023
42d5303
Please consider the following formatting changes
alibuild Jan 2, 2023
834e301
Merge pull request #42 from alibuild/alibot-cleanup-1739
ddobrigk Jan 2, 2023
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26 changes: 26 additions & 0 deletions PWGLF/Tasks/QC/straRecoStudy.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,9 @@ struct preProcessMCcollisions {
float nContribsWithTOF = 0;
float nContribsWithITS = 0;
float covTrace = 0;
float deltaXY = -999; // positive def
float deltaZ = -999;
float deltaT = -999;
};

template <typename T>
Expand All @@ -107,6 +110,11 @@ struct preProcessMCcollisions {
const AxisSpec axisCovariance{(int)400, 0.0f, +0.1f, ""};
const AxisSpec axisCovarianceTest{(int)400, -0.05f, +0.05f, ""};
const AxisSpec axisTwenty{(int)20, -0.5f, +19.5f, ""};

const AxisSpec axisPVResolutionXY{(int)400, 0.0f, +0.05f, ""};
const AxisSpec axisPVResolutionZ{(int)400, -0.1f, +0.1f, ""};
const AxisSpec axisPVResolutionT{(int)400, -50000.0f, +0.0f, ""};

histos.add("hNTimesCollRecoed", "hNTimesCollRecoed", kTH1F, {axisNTimesCollRecoed});
histos.add("hNTimesCollWithXiRecoed", "hNTimesCollWithXiRecoed", kTH1F, {axisNTimesCollRecoed});

Expand All @@ -123,6 +131,14 @@ struct preProcessMCcollisions {
histos.add("h2dCovarianceTrace", "h2dCovarianceTrace", kTH2D, {axisCovariance, axisTwenty});
histos.add("h2dCovarianceTraceWithXi", "h2dCovarianceTraceWithXi", kTH2D, {axisCovariance, axisTwenty});

// PV true error: from reco vs MC
histos.add("h2dPVResolutionXY", "h2dPVResolutionXY", kTH2D, {axisPVResolutionXY, axisTwenty});
histos.add("h2dPVResolutionZ", "h2dPVResolutionZ", kTH2D, {axisPVResolutionZ, axisTwenty});
histos.add("h2dPVResolutionT", "h2dPVResolutionT", kTH2D, {axisPVResolutionT, axisTwenty});
histos.add("h2dPVResolutionXYWithXi", "h2dPVResolutionXYWithXi", kTH2D, {axisPVResolutionXY, axisTwenty});
histos.add("h2dPVResolutionZWithXi", "h2dPVResolutionZWithXi", kTH2D, {axisPVResolutionZ, axisTwenty});
histos.add("h2dPVResolutionTWithXi", "h2dPVResolutionTWithXi", kTH2D, {axisPVResolutionT, axisTwenty});

// Helper to decipher this histogram
histos.get<TH2>(HIST("h2dNContributors"))->GetYaxis()->SetBinLabel(1, "Recoed 1 time, 1st PV"); // size 1 = 0
histos.get<TH2>(HIST("h2dNContributors"))->GetYaxis()->SetBinLabel(2, "Recoed 2 times, Biggest PV"); // size 2 = 1
Expand Down Expand Up @@ -168,6 +184,10 @@ struct preProcessMCcollisions {
histos.fill(HIST("hCyyTest"), cyy); // check for bug
collisionNContribs.emplace_back(collision.numContrib());
collisionStatAggregator[lCollisionIndex].covTrace = TMath::Sqrt(TMath::Abs(collision.covXX()) + TMath::Abs(collision.covYY()) + TMath::Abs(collision.covZZ()));
collisionStatAggregator[lCollisionIndex].deltaXY = TMath::Sqrt(TMath::Power(collision.posX() - mcCollision.posX(), 2) + TMath::Power(collision.posY() - mcCollision.posY(), 2));
collisionStatAggregator[lCollisionIndex].deltaZ = collision.posZ() - mcCollision.posZ();
collisionStatAggregator[lCollisionIndex].deltaT = (collision.collisionTime() - mcCollision.t()) / 1000;

auto groupedTracks = tracks.sliceBy(perCollision, collision.globalIndex());
for (auto& track : groupedTracks) {
if (track.isPVContributor()) {
Expand Down Expand Up @@ -198,6 +218,9 @@ struct preProcessMCcollisions {
histos.fill(HIST("h2dTrackCounter"), lIndexBin + 5, collisions.size(), collisionStatAggregator[ic].nContribsWithTOF);
histos.fill(HIST("h2dNContributors"), collisionNContribs[ic], lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dCovarianceTrace"), collisionStatAggregator[ic].covTrace, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionXY"), collisionStatAggregator[ic].deltaXY, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionZ"), collisionStatAggregator[ic].deltaZ, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionT"), collisionStatAggregator[ic].deltaT, lYAxisOffset + lCollisionIndex);
if (lNumberOfXi > 0) {
histos.fill(HIST("h2dTrackCounterWithXi"), lIndexBin + 0, collisions.size());
histos.fill(HIST("h2dTrackCounterWithXi"), lIndexBin + 1, collisions.size(), collisionNContribs[ic]);
Expand All @@ -207,6 +230,9 @@ struct preProcessMCcollisions {
histos.fill(HIST("h2dTrackCounterWithXi"), lIndexBin + 5, collisions.size(), collisionStatAggregator[ic].nContribsWithTOF);
histos.fill(HIST("h2dNContributorsWithXi"), collisionNContribs[ic], lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dCovarianceTraceWithXi"), collisionStatAggregator[ic].covTrace, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionXYWithXi"), collisionStatAggregator[ic].deltaXY, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionZWithXi"), collisionStatAggregator[ic].deltaZ, lYAxisOffset + lCollisionIndex);
histos.fill(HIST("h2dPVResolutionTWithXi"), collisionStatAggregator[ic].deltaT, lYAxisOffset + lCollisionIndex);
}
lCollisionIndex++;
}
Expand Down