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[PWGLF] Change histo filling in MC process #16301

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Merged
abmodak merged 1 commit into from
May 19, 2026
+54 −72
Merged

[PWGLF] Change histo filling in MC process #16301

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126 changes: 54 additions & 72 deletions PWGLF/Tasks/GlobalEventProperties/flattenictyPikp.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -84,9 +84,10 @@ using namespace o2::constants::math;
using namespace o2::aod::rctsel;

auto static constexpr CminCharge = 3.f;
static constexpr float CnullInt = 0;
static constexpr int CnullInt = 0;
static constexpr float Cnull = 0.0f;
static constexpr float ConeInt = 1;
static constexpr int ConeInt = 1;
static constexpr int CtwoInt = 2;
static constexpr float Cone = 1.0f;

// FV0 specific constants
Expand Down Expand Up @@ -756,26 +757,11 @@ struct FlattenictyPikp {
registryMC.add({"Events/ResponseGen", ";N_{ch,FV0};1-#rho_{FV0};", {kTHnSparseF, {multAxis, flatAxis}}});
registryMC.add("Events/h1flatencityFV0MCGen", "", {kTH1F, {flatAxis}});
registryMC.add("Events/hFlatMCGen", "Events/hFlatMCGen", {kTH1F, {flatAxis}});
registryMC.add("Events/hFlatMCRec", "Events/hFlatMCRec", {kTH1F, {flatAxis}});
// Event counter
auto h = registryMC.add<TH1>("Events/hEvtGenRec", "Generated and Reconstructed MC Collisions", kTH1F, {{3, 0.5, 3.5}});
h->GetXaxis()->SetBinLabel(1, "Gen coll");
h->GetXaxis()->SetBinLabel(2, "Rec coll");
h->GetXaxis()->SetBinLabel(3, "INEL>0");
registryMC.add("Events/hEvtMcGen", "Events/hEvtMcGen", {kTH1F, {{4, 0.f, 4.f}}});
registryMC.get<TH1>(HIST("Events/hEvtMcGen"))->GetXaxis()->SetBinLabel(1, "all");
registryMC.get<TH1>(HIST("Events/hEvtMcGen"))->GetXaxis()->SetBinLabel(2, "z-vtx");
registryMC.get<TH1>(HIST("Events/hEvtMcGen"))->GetXaxis()->SetBinLabel(3, "INELgt0");
registryMC.get<TH1>(HIST("Events/hEvtMcGen"))->GetXaxis()->SetBinLabel(4, "INELgt0TVX");
registryMC.add("Events/hEvtMCRec", "Events/hEvtMCRec", {kTH1F, {{3, 0.f, 3.f}}});
registryMC.get<TH1>(HIST("Events/hEvtMCRec"))->GetXaxis()->SetBinLabel(1, "all");
registryMC.get<TH1>(HIST("Events/hEvtMCRec"))->GetXaxis()->SetBinLabel(2, "evt sel");
registryMC.get<TH1>(HIST("Events/hEvtMCRec"))->GetXaxis()->SetBinLabel(3, "INELgt0");
registryMC.add("Events/hEvtMcGenColls", "Number of events; Cut; #Events Passed Cut", {kTH1F, {{4, 0.5, 4.5}}});
registryMC.get<TH1>(HIST("Events/hEvtMcGenColls"))->GetXaxis()->SetBinLabel(1, "Gen. coll");
registryMC.get<TH1>(HIST("Events/hEvtMcGenColls"))->GetXaxis()->SetBinLabel(2, "At least 1 reco");
registryMC.get<TH1>(HIST("Events/hEvtMcGenColls"))->GetXaxis()->SetBinLabel(3, "Reco. coll.");
registryMC.get<TH1>(HIST("Events/hEvtMcGenColls"))->GetXaxis()->SetBinLabel(4, "Reco. good coll.");
//
registryMC.add("Events/hNchGenVsCent", "Gen Nch vs Cent; mult; Gen Nch (|#eta|<0.8)", {kTH2F, {nChAxis, multAxis}});
registryMC.add("Events/hVtxZRec", "MC Rec vertex z position", kTH1F, {vtxzAxis});
Expand Down Expand Up @@ -2357,7 +2343,7 @@ struct FlattenictyPikp {
{
LOGP(debug, "MC col {} has {} reco cols", mcCollision.globalIndex(), collisions.size());
auto multMC = -1.;
if (evtSelOpt.useMultMCmidrap || multEst == 2) { // use generated Nch in ∣eta∣ < 0.8
if (evtSelOpt.useMultMCmidrap || multEst == CtwoInt) { // use generated Nch in ∣eta∣ < 0.8
multMC = countPart(particles);
} else {
multMC = getMultMC(mcCollision); // using McCentFT0Ms
Expand All @@ -2366,45 +2352,66 @@ struct FlattenictyPikp {
registryMC.fill(HIST("Events/hFlatMCGen"), flatMC);

// Loop on rec collisions
// Obtain here: Denominator of tracking efficiency; Numerator event and signal loss
//
bool gtZeroColl = false;
auto multRecGt1 = -999;
auto flatRec = -999;
// Obtain here: Numerator of tracking efficiency; Secondary contamination correction
for (const auto& collision : collisions) {
if (!isGoodEvent<false>(collision)) {
continue;
if (trkSelOpt.cfgRejectTrkAtTPCSector || applyCalibGain || applyCalibVtx) {
auto bc = collision.bc_as<aod::BCsWithTimestamps>();
int currentRun = bc.runNumber();
if (runNumber != currentRun) {
initCCDB(bc);
runNumber = currentRun;
}
}
registryMC.fill(HIST("Events/hCentVsFlatRecINELgt0"), multRecGt1, flatRec); // Evt split den
registryMC.fill(HIST("Events/hCentVsFlatRecINELgt0"), getMult(collision), fillFlat<false>(collision)); // Evt split den
if (evtSelOpt.cfgRemoveSplitVertex && collision.globalIndex() != mcCollision.bestCollisionIndex()) {
continue;
}
registryMC.fill(HIST("Events/hCentVsFlatRecINELgt0wRecEvt"), multRecGt1, flatRec); // Evt split num, w/ Nrec > 0
gtZeroColl = true;
multRecGt1 = getMult(collision);
flatRec = fillFlat<true>(collision);
}
registryMC.fill(HIST("Events/hCentVsFlatRecINELgt0wRecEvt"), getMult(collision), fillFlat<false>(collision)); // Evt split num, w/ Nrec > 0

for (const auto& particle : particles) {
if (!isChrgParticle(particle.pdgCode())) {
continue;
}
if (!particle.isPhysicalPrimary()) {
continue;
}
if (std::abs(particle.eta()) > trkSelOpt.cfgTrkEtaMax) {
continue;
}
if (particle.pt() < trkSelOpt.cfgTrkPtMin) {
continue;
}
static_for<0, 1>([&](auto pidSgn) {
fillMCGenRecEvt<pidSgn, o2::track::PID::Pion>(particle, multMC, flatMC);
fillMCGenRecEvt<pidSgn, o2::track::PID::Kaon>(particle, multMC, flatMC);
fillMCGenRecEvt<pidSgn, o2::track::PID::Proton>(particle, multMC, flatMC);
});
}
if (!isGoodEvent<false>(collision)) {
continue;
}
const float multRecGt1 = getMult(collision);
const float flatRec = fillFlat<true>(collision);

if (gtZeroColl) {
registryMC.fill(HIST("Events/hVtxZRec"), collision.posZ());
registryMC.fill(HIST("Events/hCentVsFlatRecINELgt0wRecEvtSel"), multRecGt1, flatRec); // Evt split num, w/ Nrec > 0 + Evt. sel
registryMC.fill(HIST("Events/hNchGenVsCent"), multMC, multRecGt1);
registryMC.fill(HIST("Events/hNchVsFlatGenINELgt0wRecEvtSel"), multMC, flatMC); // Evt loss num, w/ Nrec > 0 + Evt. sel
}

for (const auto& particle : particles) {
if (!isChrgParticle(particle.pdgCode())) {
continue;
}
if (!particle.isPhysicalPrimary()) {
continue;
}
if (std::abs(particle.eta()) > trkSelOpt.cfgTrkEtaMax) {
continue;
}
if (particle.pt() < trkSelOpt.cfgTrkPtMin) {
continue;
}
if (gtZeroColl) {
// Obtain here: Denominator of tracking efficiency; Numerator event and signal loss
for (const auto& particle : particles) {
if (!isChrgParticle(particle.pdgCode())) {
continue;
}
if (!particle.isPhysicalPrimary()) {
continue;
}
if (std::abs(particle.eta()) > trkSelOpt.cfgTrkEtaMax) {
continue;
}
if (particle.pt() < trkSelOpt.cfgTrkPtMin) {
continue;
}
static_for<0, 1>([&](auto pidSgn) {
fillMCGenRecEvt<pidSgn, o2::track::PID::Pion, true>(particle, multMC, flatMC);
fillMCGenRecEvt<pidSgn, o2::track::PID::Kaon, true>(particle, multMC, flatMC);
Expand All @@ -2417,33 +2424,8 @@ struct FlattenictyPikp {
registryMC.fill(HIST(Cprefix) + HIST(CspeciesAll[Cidx]) + HIST(CpTeffGenPrimRecEvt), multRecGt1, flatRec, particle.pt()); // Tracking eff. den
}
});
} else {
static_for<0, 1>([&](auto pidSgn) {
fillMCGenRecEvt<pidSgn, o2::track::PID::Pion>(particle, multMC, flatMC);
fillMCGenRecEvt<pidSgn, o2::track::PID::Kaon>(particle, multMC, flatMC);
fillMCGenRecEvt<pidSgn, o2::track::PID::Proton>(particle, multMC, flatMC);
});
}
}

// Loop on rec collisions
// Obtain here: Numerator of tracking efficiency; Secondary contamination correction
for (const auto& collision : collisions) {
if (trkSelOpt.cfgRejectTrkAtTPCSector || applyCalibGain || applyCalibVtx) {
auto bc = collision.bc_as<aod::BCsWithTimestamps>();
int currentRun = bc.runNumber();
if (runNumber != currentRun) {
initCCDB(bc);
runNumber = currentRun;
}
}
if (!isGoodEvent<false>(collision)) {
continue;
}
registryMC.fill(HIST("Events/hVtxZRec"), collision.posZ());
if (evtSelOpt.cfgRemoveSplitVertex && collision.globalIndex() != mcCollision.bestCollisionIndex()) {
continue;
}
// Rec tracks; track selection w/ DCA open (for secondaries), w/ DCA close (for efficiency)
// Obtain here: DCAxy for sec contamination, MC closure
const auto& groupedTrks = tracks.sliceBy(perCollTrk, collision.globalIndex());
Expand Down
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