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ITS: fix truth seeding to only use signal events #14715

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Merged
mconcas merged 1 commit into from
Oct 2, 2025
Merged

ITS: fix truth seeding to only use signal events #14715

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52 changes: 26 additions & 26 deletions Detectors/ITSMFT/ITS/tracking/src/VertexerTraits.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -514,34 +514,34 @@ void VertexerTraits<nLayers>::addTruthSeedingVertices()
bounded_vector<int> events;
};
std::map<int, VertInfo> vertices;
for (int iSrc{0}; iSrc < mcReader.getNSources(); ++iSrc) {
auto eveId2colId = dc->getCollisionIndicesForSource(iSrc);
for (int iEve{0}; iEve < mcReader.getNEvents(iSrc); ++iEve) {
const auto& ir = irs[eveId2colId[iEve]];
if (!ir.isDummy()) { // do we need this, is this for diffractive events?
const auto& eve = mcReader.getMCEventHeader(iSrc, iEve);
int rofId = ((ir - raw::HBFUtils::Instance().getFirstSampledTFIR()).toLong() - roFrameBiasInBC) / roFrameLengthInBC;
if (!vertices.contains(rofId)) {
vertices[rofId] = {
.vertices = bounded_vector<Vertex>(mMemoryPool.get()),
.srcs = bounded_vector<int>(mMemoryPool.get()),
.events = bounded_vector<int>(mMemoryPool.get()),
};
}
Vertex vert;
vert.setTimeStamp(rofId);
vert.setNContributors(std::ranges::count_if(mcReader.getTracks(iSrc, iEve), [](const auto& trk) {
return trk.isPrimary() && trk.GetPt() > 0.2 && std::abs(trk.GetEta()) < 1.3;
}));
vert.setXYZ((float)eve.GetX(), (float)eve.GetY(), (float)eve.GetZ());
vert.setChi2(1);
constexpr float cov = 50e-9;
vert.setCov(cov, cov, cov, cov, cov, cov);
vertices[rofId].vertices.push_back(vert);
vertices[rofId].srcs.push_back(iSrc);
vertices[rofId].events.push_back(iEve);
const int iSrc = 0; // take only events from collision generator
auto eveId2colId = dc->getCollisionIndicesForSource(iSrc);
for (int iEve{0}; iEve < mcReader.getNEvents(iSrc); ++iEve) {
const auto& ir = irs[eveId2colId[iEve]];
if (!ir.isDummy()) { // do we need this, is this for diffractive events?
const auto& eve = mcReader.getMCEventHeader(iSrc, iEve);
int rofId = ((ir - raw::HBFUtils::Instance().getFirstSampledTFIR()).toLong() - roFrameBiasInBC) / roFrameLengthInBC;
if (!vertices.contains(rofId)) {
vertices[rofId] = {
.vertices = bounded_vector<Vertex>(mMemoryPool.get()),
.srcs = bounded_vector<int>(mMemoryPool.get()),
.events = bounded_vector<int>(mMemoryPool.get()),
};
}
Vertex vert;
vert.setTimeStamp(rofId);
vert.setNContributors(std::ranges::count_if(mcReader.getTracks(iSrc, iEve), [](const auto& trk) {
return trk.isPrimary() && trk.GetPt() > 0.2 && std::abs(trk.GetEta()) < 1.3;
}));
vert.setXYZ((float)eve.GetX(), (float)eve.GetY(), (float)eve.GetZ());
vert.setChi2(1);
constexpr float cov = 50e-9;
vert.setCov(cov, cov, cov, cov, cov, cov);
vertices[rofId].vertices.push_back(vert);
vertices[rofId].srcs.push_back(iSrc);
vertices[rofId].events.push_back(iEve);
}
mcReader.releaseTracksForSourceAndEvent(iSrc, iEve);
}
size_t nVerts{0};
for (int iROF{0}; iROF < mTimeFrame->getNrof(); ++iROF) {
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