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[PWGLF] Add structured71 Q-vector recentering to zdc2stagecalibration #18282

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Merged
skundu692 merged 1 commit into from
Oct 14, 2026
+30 −4
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[PWGLF] Add structured71 Q-vector recentering to zdc2stagecalibration #18282

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34 changes: 30 additions & 4 deletions PWGLF/TableProducer/Common/zdc2stagecalibration.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -78,9 +78,10 @@ struct zdc2stagecalibration {
Configurable<bool> deriveSpatialCalib{"deriveSpatialCalib", false, "store spatial regression moments after gain correction"};
Configurable<bool> deriveQRecentering{"deriveQRecentering", false, "store Q-vector recentering regression moments after gain and spatial correction"};
Configurable<bool> useQRecentering{"useQRecentering", false, "apply Q-vector recentering calibration"};
Configurable<int> qRecenteringMethod{"qRecenteringMethod", 0, "Q recentering method: 0=current regression, 1=multidimensional cubic regression"};
Configurable<int> qRecenteringMethod{"qRecenteringMethod", 0, "Q recentering method: 0=current regression, 1=multidimensional cubic regression, 4=structured71 regression"};
Configurable<std::string> confQRecenteringPath{"confQRecenteringPath", "", "CCDB path to the current run-wise Q-vector recentering coefficients"};
Configurable<std::string> confQRecenteringMultidimPath{"confQRecenteringMultidimPath", "", "CCDB path to the multidimensional cubic Q-vector recentering coefficients"};
Configurable<std::string> confQRecenteringStructured71Path{"confQRecenteringStructured71Path", "", "CCDB path to the 71-feature structured Q-vector recentering coefficients"};

Configurable<int> cfgSpatialCalibBins{
"cfgSpatialCalibBins", 30,
Expand Down Expand Up @@ -128,8 +129,8 @@ struct zdc2stagecalibration {
void init(o2::framework::InitContext&)
{
rctChecker.init(rctCut.cfgEvtRCTFlagCheckerLabel, rctCut.cfgEvtRCTFlagCheckerZDCCheck, rctCut.cfgEvtRCTFlagCheckerLimitAcceptAsBad);
if (qRecenteringMethod.value < 0 || qRecenteringMethod.value > 1) {
LOGF(fatal, "Unsupported qRecenteringMethod=%d. Use 0 for the current regression or 1 for the multidimensional cubic regression.", qRecenteringMethod.value);
if (qRecenteringMethod.value != 0 && qRecenteringMethod.value != 1 && qRecenteringMethod.value != 4) {
LOGF(fatal, "Unsupported qRecenteringMethod=%d. Use 0 for the current regression, 1 for the multidimensional cubic regression or 4 for the structured71 regression.", qRecenteringMethod.value);
}

const int nTimeBins = static_cast<int>(std::ceil(cfgMaxRunHours.value * 60.f / cfgTimeSliceMinutes.value));
Expand Down Expand Up @@ -324,12 +325,19 @@ struct zdc2stagecalibration {
}
}
if (calibrationStage.value == 2 && useQRecentering.value) {
const std::string qRecenteringPath = qRecenteringMethod.value == 1 ? confQRecenteringMultidimPath.value : confQRecenteringPath.value;
const std::string qRecenteringPath = qRecenteringMethod.value == 4 ? confQRecenteringStructured71Path.value : (qRecenteringMethod.value == 1 ? confQRecenteringMultidimPath.value : confQRecenteringPath.value);
if (!qRecenteringPath.empty()) {
qRecenteringProfile = ccdb->getForTimeStamp<TH3D>(qRecenteringPath, timestamp);
}
if (!qRecenteringProfile) {
LOGF(warn, "No ZDC Q-recentering calibration found for run %d at timestamp %llu", runNumber, static_cast<unsigned long long>(timestamp));
} else if (qRecenteringMethod.value == 4) {
const bool structuredMapOK = qRecenteringProfile->GetYaxis()->GetNbins() == kQRecenteringStructuredNFeatures &&
std::string(qRecenteringProfile->GetYaxis()->GetBinLabel(kQRecenteringMultidimNFeatures + 1)) == "(T--0.8)_+^3" &&
std::string(qRecenteringProfile->GetYaxis()->GetBinLabel(kQRecenteringStructuredNFeatures)) == "(Vz-+0.8)_+^3";
if (!structuredMapOK) {
LOGF(fatal, "CCDB object at %s is not a valid structured71 map for run %d", qRecenteringPath.c_str(), runNumber);
}
}
}
}
Expand Down Expand Up @@ -942,6 +950,24 @@ struct zdc2stagecalibration {
}
qValues[component] -= predictedBias;
}
} else if (qRecenteringMethod.value == 4) {
const auto qFeatures = makeQRecenteringStructuredFeatures(timeFromSOR, vx, vy, vz);
for (int component = 0; component < kQRecenteringNComponents; ++component) {
double predictedBias = 0.0;
for (int i = 0; i < kQRecenteringStructuredNFeatures; ++i) {
const double coefficient = qRecenteringProfile->GetBinContent(qRecenteringProfile->FindBin(centrality, i + 0.5, component + 0.5));
if (!std::isfinite(coefficient)) {
qRecenteringOK = false;
break;
}
predictedBias += coefficient * qFeatures[i];
}
if (!qRecenteringOK || !std::isfinite(predictedBias)) {
qRecenteringOK = false;
break;
}
qValues[component] -= predictedBias;
}
} else {
const auto qFeatures = makeQRecenteringMultidimFeatures(timeFromSOR, vx, vy, vz);
for (int component = 0; component < kQRecenteringNComponents; ++component) {
Expand Down
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