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[PWGLF] use reconstructed eventType in cascade analysis #16208

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Merged
romainschotter merged 3 commits into from
May 12, 2026
+71 −31
Merged

[PWGLF] use reconstructed eventType in cascade analysis #16208

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fa2bb15
cascades in pp upd
nepeivodaRS May 11, 2026
73f1d5b
o2linter fix
nepeivodaRS May 11, 2026
7689f52
Enum for eventType bins
nepeivodaRS May 12, 2026
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102 changes: 71 additions & 31 deletions PWGLF/TableProducer/Strangeness/cascqaanalysis.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -44,11 +44,14 @@
#include <Framework/runDataProcessing.h>

#include <TH1.h>
#include <TH2.h>
#include <TH3.h>
#include <TPDGCode.h>
#include <TRandom2.h>
#include <TString.h>

#include <algorithm>
#include <array>
#include <cmath>
#include <cstdint>
#include <cstdlib>
Expand All @@ -74,6 +77,19 @@ struct Cascqaanalysis {

HistogramRegistry registry{"registry"};

enum EventTypeBin {
kINEL = 0,
kINELgt0,
kINELgt1,
kNEventTypeBins
};
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@vkucera vkucera May 12, 2026

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Thanks, that looks way safer.
Please remove the k prefixes. They server no purpose, conflict with the naming conventions and appear only in ROOT code.


static constexpr std::array<std::pair<EventTypeBin, const char*>, kNEventTypeBins> EventTypeBinLabels{{
{kINEL, "INEL"},
{kINELgt0, "INEL>0"},
{kINELgt1, "INEL>1"},
}};

// Axes
ConfigurableAxis ptAxis{"ptAxis", {200, 0.0f, 10.0f}, "#it{p}_{T} (GeV/#it{c})"};
ConfigurableAxis rapidityAxis{"rapidityAxis", {200, -2.0f, 2.0f}, "y"};
Expand All @@ -83,7 +99,7 @@ struct Cascqaanalysis {
ConfigurableAxis centFV0AAxis{"centFV0AAxis",
{VARIABLE_WIDTH, 0., 0.01, 0.05, 0.1, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 105.5},
"FV0A (%)"};
ConfigurableAxis eventTypeAxis{"eventTypeAxis", {3, -0.5f, 2.5f}, "Event Type"};
ConfigurableAxis eventTypeAxis{"eventTypeAxis", {kNEventTypeBins, -0.5f, static_cast<float>(kNEventTypeBins) - 0.5f}, "Event Type"};

ConfigurableAxis nAssocCollAxis{"nAssocCollAxis", {5, -0.5f, 4.5f}, "N_{assoc.}"};
ConfigurableAxis nChargedFT0MGenAxis{"nChargedFT0MGenAxis", {300, 0, 300}, "N_{FT0M, gen.}"};
Expand Down Expand Up @@ -194,6 +210,14 @@ struct Cascqaanalysis {
o2::constants::physics::MassOmegaMinus * decayLength * invMomentum};
}

template <typename TAxisType>
static void setEventTypeAxisLabels(TAxisType* axis)
{
for (const auto& [bin, label] : EventTypeBinLabels) {
axis->SetBinLabel(static_cast<int>(bin) + 1, label);
}
}
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@vkucera vkucera May 11, 2026

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  • Why don't you use std::array?
  • You have no guarantee that these labels match how you fill the histograms. Why don't you use enum?

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@nepeivodaRS nepeivodaRS May 11, 2026

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Hey,
There is already an EvFlags enum, but it is a bit mask:

EvINEL    = 0x1
EvINELgt0 = 0x2
EvINELgt1 = 0x4

So I cannot use those values directly as histogram-bin indices.
Do you suggest adding a separate ordered enum for the histogram axis like this:

enum EventType {
  kINEL = 0,
  kINELgt0,
  kINELgt1,
  kNEventTypes
};

static constexpr std::array<const char*, kNEventTypes> EventTypeLabels = {
  "INEL",
  "INEL>0",
  "INEL>1"
};

I haven't done this because of the possible future confusion between these two enums.


void init(InitContext const&)
{
TString hCandidateCounterLabels[4] = {"All candidates", "passed topo cuts", "has associated MC particle", "associated with Xi(Omega)"};
Expand All @@ -220,15 +244,25 @@ struct Cascqaanalysis {
registry.get<TH1>(HIST("hNEventsMC"))->GetXaxis()->SetBinLabel(n, hNEventsMCLabels[n - 1]);
}
registry.add("hZCollisionGen", "hZCollisionGen", {HistType::kTH1D, {{200, -20.f, 20.f}}});
registry.add("hZCollisionRecVsGen", "hZCollisionRecVsGen", {HistType::kTH2D, {{100, -10.f, 10.f, "z_{vtx}^{rec} (cm)"}, {100, -10.f, 10.f, "z_{vtx}^{gen} (cm)"}}});
registry.add("hEventTypeRecVsGen", "hEventTypeRecVsGen", {HistType::kTH2D, {eventTypeAxis, eventTypeAxis}});
registry.add("hNchFT0MNAssocMCCollisions", "hNchFT0MNAssocMCCollisions", {HistType::kTH3D, {nChargedFT0MGenAxis, nAssocCollAxis, eventTypeAxis}});
registry.add("hNchFT0MNAssocMCCollisionsSameType", "hNchFT0MNAssocMCCollisionsSameType", {HistType::kTH3D, {nChargedFT0MGenAxis, nAssocCollAxis, eventTypeAxis}});
registry.add("hNContributorsCorrelation", "hNContributorsCorrelation", {HistType::kTH2F, {{250, -0.5f, 249.5f, "Secondary Contributor"}, {250, -0.5f, 249.5f, "Main Contributor"}}});
registry.add("hNchFT0MGenEvType", "hNchFT0MGenEvType", {HistType::kTH2D, {nChargedFT0MGenAxis, eventTypeAxis}});
registry.add("hNchFV0AGenEvType", "hNchFV0AGenEvType", {HistType::kTH2D, {nChargedFV0AGenAxis, eventTypeAxis}});
registry.add("hCentFT0M_genMC", "hCentFT0M_genMC", {HistType::kTH2D, {centFT0MAxis, eventTypeAxis}});
setEventTypeAxisLabels(registry.get<TH2>(HIST("hEventTypeRecVsGen"))->GetXaxis());
setEventTypeAxisLabels(registry.get<TH2>(HIST("hEventTypeRecVsGen"))->GetYaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hNchFT0MNAssocMCCollisions"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hNchFT0MNAssocMCCollisionsSameType"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH2>(HIST("hNchFT0MGenEvType"))->GetYaxis());
setEventTypeAxisLabels(registry.get<TH2>(HIST("hNchFV0AGenEvType"))->GetYaxis());
setEventTypeAxisLabels(registry.get<TH2>(HIST("hCentFT0M_genMC"))->GetYaxis());
}

registry.add("hCentFT0M_rec", "hCentFT0M_rec", {HistType::kTH2D, {centFT0MAxis, eventTypeAxis}});
setEventTypeAxisLabels(registry.get<TH2>(HIST("hCentFT0M_rec"))->GetYaxis());

if (candidateQA) {
registry.add("hNcandidates", "hNcandidates", {HistType::kTH3D, {nCandidates, centFT0MAxis, {2, -0.5f, 1.5f}}});
Expand All @@ -242,13 +276,21 @@ struct Cascqaanalysis {
registry.add("hNchFT0Mglobal", "hNchFT0Mglobal", {HistType::kTH3D, {nChargedFT0MGenAxis, multNTracksAxis, eventTypeAxis}});
registry.add("hNchFT0MPVContr", "hNchFT0MPVContr", {HistType::kTH3D, {nChargedFT0MGenAxis, multNTracksAxis, eventTypeAxis}});
registry.add("hNchFV0APVContr", "hNchFV0APVContr", {HistType::kTH3D, {nChargedFV0AGenAxis, multNTracksAxis, eventTypeAxis}});
setEventTypeAxisLabels(registry.get<TH3>(HIST("hNchFT0Mglobal"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hNchFT0MPVContr"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hNchFV0APVContr"))->GetZaxis());
}
registry.add("hFT0MpvContr", "hFT0MpvContr", {HistType::kTH3D, {centFT0MAxis, multNTracksAxis, eventTypeAxis}});
registry.add("hFV0ApvContr", "hFV0ApvContr", {HistType::kTH3D, {centFV0AAxis, multNTracksAxis, eventTypeAxis}});
registry.add("hFT0Mglobal", "hFT0Mglobal", {HistType::kTH3D, {centFT0MAxis, multNTracksAxis, eventTypeAxis}});
registry.add("hFV0AFT0M", "hFV0AFT0M", {HistType::kTH3D, {centFV0AAxis, centFT0MAxis, eventTypeAxis}});
registry.add("hFT0MFV0Asignal", "hFT0MFV0Asignal", {HistType::kTH2D, {signalFT0MAxis, signalFV0AAxis}});
registry.add("hFT0MsignalPVContr", "hFT0MsignalPVContr", {HistType::kTH3D, {signalFT0MAxis, multNTracksAxis, eventTypeAxis}});
setEventTypeAxisLabels(registry.get<TH3>(HIST("hFT0MpvContr"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hFV0ApvContr"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hFT0Mglobal"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hFV0AFT0M"))->GetZaxis());
setEventTypeAxisLabels(registry.get<TH3>(HIST("hFT0MsignalPVContr"))->GetZaxis());
}

rctChecker.init(cfgEvtRCTFlagCheckerLabel, cfgEvtRCTFlagCheckerZDCCheck, cfgEvtRCTFlagCheckerLimitAcceptAsBad);
Expand Down Expand Up @@ -334,20 +376,19 @@ struct Cascqaanalysis {
}

template <typename TCollision>
int getEventTypeFlag(TCollision const& collision)
EventTypeBin getEventTypeBin(TCollision const& collision)
{
// 0 - INEL, 1 - INEL>0, 2 - INEL>1
int evFlag = 0;
EventTypeBin evTypeBin = kINEL;
registry.fill(HIST("hNEvents"), 11.5); // INEL
if (collision.isInelGt0()) {
evFlag += 1;
evTypeBin = kINELgt0;
registry.fill(HIST("hNEvents"), 12.5); // INEL>0
}
if (collision.isInelGt1()) {
evFlag += 1;
evTypeBin = kINELgt1;
registry.fill(HIST("hNEvents"), 13.5); // INEL>1
}
return evFlag;
return evTypeBin;
}

template <typename TCollision>
Expand Down Expand Up @@ -451,7 +492,7 @@ struct Cascqaanalysis {
return;
}

int evType = getEventTypeFlag(collision);
EventTypeBin evType = getEventTypeBin(collision);

auto tracksGroupedPVcontr = pvContribTracksIUEta1->sliceByCached(aod::track::collisionId, collision.globalIndex(), cache);
int nTracksPVcontr = tracksGroupedPVcontr.size();
Expand Down Expand Up @@ -549,31 +590,30 @@ struct Cascqaanalysis {
uint16_t nchFT0 = getGenNchInFT0Mregion(mcPartSlice);
uint16_t nchFV0 = getGenNchInFV0Aregion(mcPartSlice);

int evType = 0;
registry.fill(HIST("hNEvents"), 11.5); // INEL
// Rec. collision associated with INEL>0 gen. one
EventTypeBin genEvType = kINEL;
if (pwglf::isINELgtNmc(mcPartSlice, 0, pdgDB)) {
registry.fill(HIST("hNEvents"), 12.5); // INEL
evType++;
genEvType = kINELgt0;
}
// Rec. collision associated with INEL>1 gen. one
if (pwglf::isINELgtNmc(mcPartSlice, 1, pdgDB)) {
registry.fill(HIST("hNEvents"), 13.5); // INEL
evType++;
genEvType = kINELgt1;
}

registry.fill(HIST("hCentFT0M_rec"), mcCollision.centFT0M(), evType);
const EventTypeBin recoEvType = getEventTypeBin(collision);

registry.fill(HIST("hCentFT0M_rec"), mcCollision.centFT0M(), recoEvType);
registry.fill(HIST("hZCollisionRecVsGen"), collision.posZ(), mcCollision.posZ());
registry.fill(HIST("hEventTypeRecVsGen"), recoEvType, genEvType);

if (multQA) {
registry.fill(HIST("hNchFT0MPVContr"), nchFT0, nTracksPVcontr, evType);
registry.fill(HIST("hNchFV0APVContr"), nchFV0, nTracksPVcontr, evType);
registry.fill(HIST("hFT0MpvContr"), mcCollision.centFT0M(), nTracksPVcontr, evType);
registry.fill(HIST("hFV0ApvContr"), 0, nTracksPVcontr, evType); // mcCollision.centFV0A() to be added
registry.fill(HIST("hFT0Mglobal"), mcCollision.centFT0M(), nTracksGlobal, evType);
registry.fill(HIST("hFV0AFT0M"), 0, mcCollision.centFT0M(), evType); // mcCollision.centFV0A() to be added
registry.fill(HIST("hNchFT0Mglobal"), nchFT0, nTracksGlobal, evType);
registry.fill(HIST("hNchFT0MPVContr"), nchFT0, nTracksPVcontr, recoEvType);
registry.fill(HIST("hNchFV0APVContr"), nchFV0, nTracksPVcontr, recoEvType);
registry.fill(HIST("hFT0MpvContr"), mcCollision.centFT0M(), nTracksPVcontr, recoEvType);
registry.fill(HIST("hFV0ApvContr"), 0, nTracksPVcontr, recoEvType); // mcCollision.centFV0A() to be added
registry.fill(HIST("hFT0Mglobal"), mcCollision.centFT0M(), nTracksGlobal, recoEvType);
registry.fill(HIST("hFV0AFT0M"), 0, mcCollision.centFT0M(), recoEvType); // mcCollision.centFV0A() to be added
registry.fill(HIST("hNchFT0Mglobal"), nchFT0, nTracksGlobal, recoEvType);
registry.fill(HIST("hFT0MFV0Asignal"), collision.multFT0A() + collision.multFT0C(), collision.multFV0A());
registry.fill(HIST("hFT0MsignalPVContr"), collision.multFT0A() + collision.multFT0C(), nTracksPVcontr, evType);
registry.fill(HIST("hFT0MsignalPVContr"), collision.multFT0A() + collision.multFT0C(), nTracksPVcontr, recoEvType);
}

float lEventScale = scalefactor;
Expand Down Expand Up @@ -654,20 +694,20 @@ struct Cascqaanalysis {
registry.fill(HIST("hNEventsMC"), 1.5);

// Define the type of generated MC collision
int evType = 0;
EventTypeBin evType = kINEL;
uint8_t flagsGen = 0;
flagsGen |= o2::aod::myMCcascades::EvFlags::EvINEL;
registry.fill(HIST("hNEventsMC"), 2.5);
// Generated collision is INEL>0
if (pwglf::isINELgtNmc(mcParticles, 0, pdgDB)) {
flagsGen |= o2::aod::myMCcascades::EvFlags::EvINELgt0;
evType++;
evType = kINELgt0;
registry.fill(HIST("hNEventsMC"), 3.5);
}
// Generated collision is INEL>1
if (pwglf::isINELgtNmc(mcParticles, 1, pdgDB)) {
flagsGen |= o2::aod::myMCcascades::EvFlags::EvINELgt1;
evType++;
evType = kINELgt1;
registry.fill(HIST("hNEventsMC"), 4.5);
}

Expand Down Expand Up @@ -723,15 +763,15 @@ struct Cascqaanalysis {
const auto evtReconstructedAndINELgt1 = std::count_if(selectedEvents.begin(), selectedEvents.end(), isAssocToINELgt1);

switch (evType) {
case 0: {
case kINEL: {
registry.fill(HIST("hNchFT0MNAssocMCCollisionsSameType"), nchFT0, evtReconstructedAndINEL, evType);
break;
}
case 1: {
case kINELgt0: {
registry.fill(HIST("hNchFT0MNAssocMCCollisionsSameType"), nchFT0, evtReconstructedAndINELgt0, evType);
break;
}
case 2: {
case kINELgt1: {
registry.fill(HIST("hNchFT0MNAssocMCCollisionsSameType"), nchFT0, evtReconstructedAndINELgt1, evType);
break;
}
Expand Down
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