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fprino merged 1 commit into from
Apr 8, 2025
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ITS Calib: From rise time to time of arrival #14150

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43 changes: 18 additions & 25 deletions Detectors/ITSMFT/ITS/workflow/src/ThresholdCalibratorSpec.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -1111,24 +1111,18 @@ void ITSThresholdCalibrator::setRunType(const short int& runtype)
std::vector<float> ITSThresholdCalibrator::calculatePulseParams(const short int& chipID)
{

int rt_mindel = -1, rt_maxdel = -1, tot_mindel = -1, tot_maxdel = -1;
int sumRt = 0, sumSqRt = 0, countRt = 0, sumTot = 0, sumSqTot = 0, countTot = 0;
int tot_mindel = -1, tot_maxdel = -1;
float sumToA = 0., sumSqToA = 0., countToA = 0., sumTot = 0., sumSqTot = 0., countTot = 0.;
float toa = -1.;

for (auto itrow = mPixelHits[chipID].begin(); itrow != mPixelHits[chipID].end(); itrow++) { // loop over the chip rows
short int row = itrow->first;
for (short int col_i = 0; col_i < this->N_COL; col_i++) { // loop over the pixels on the row
for (short int sdel_i = 0; sdel_i < this->N_RANGE; sdel_i++) { // loop over the strobe delays
if (mPixelHits[chipID][row][col_i][0][sdel_i] > 0.1 * nInj && mPixelHits[chipID][row][col_i][0][sdel_i] < nInj && rt_mindel < 0) { // from left, first bin with 10% hits and 90% hits
rt_mindel = (sdel_i * mStep) + 1; // + 1 because if delay = n, we get n+1 in reality (ALPIDE feature)
}
if (mPixelHits[chipID][row][col_i][0][sdel_i] >= 0.9 * nInj) { // for Rt max take the 90% point
rt_maxdel = (sdel_i * mStep) + 1;
break;
}
}
for (short int col_i = 0; col_i < this->N_COL; col_i++) { // loop over the pixels on the row

for (short int sdel_i = 0; sdel_i < N_RANGE; sdel_i++) {
if (mPixelHits[chipID][row][col_i][0][sdel_i] >= 0.5 * nInj) { // for ToT take the 50% point
tot_mindel = (sdel_i * mStep) + 1;
if (mPixelHits[chipID][row][col_i][0][sdel_i] >= 0.5 * nInj) { // for ToT and ToA take the 50% point
tot_mindel = (sdel_i * mStep) + 1; // +1 is for n --> n+1 (alpide manual)
toa = (sdel_i * mStep) + 1;
break;
}
}
Expand All @@ -1146,24 +1140,23 @@ std::vector<float> ITSThresholdCalibrator::calculatePulseParams(const short int&
countTot++;
}

if (rt_maxdel > rt_mindel && rt_maxdel > 0 && rt_mindel > 0) {
sumRt += rt_maxdel - rt_mindel + mStrobeWindow;
sumSqRt += (rt_maxdel - rt_mindel + mStrobeWindow) * (rt_maxdel - rt_mindel + mStrobeWindow);
countRt++;
if (toa > 0) {
sumToA += toa + float(mStrobeWindow) / 2.;
sumSqToA += (toa + float(mStrobeWindow) / 2.) * (toa + float(mStrobeWindow) / 2.);
countToA++;
}

rt_mindel = -1;
rt_maxdel = -1;
toa = -1.;
tot_maxdel = -1;
tot_mindel = -1;
} // end loop over col_i
} // end loop over chip rows

std::vector<float> output; // {avgRt, rmsRt, avgTot, rmsTot}
std::vector<float> output; // {avgToA, rmsToA, avgTot, rmsTot}
// Avg Rt
output.push_back(!countRt ? 0. : (float)sumRt / (float)countRt);
output.push_back(!countToA ? 0. : (float)sumToA / (float)countToA);
// Rms Rt
output.push_back(!countRt ? 0. : (std::sqrt((float)sumSqRt / (float)countRt - output[0] * output[0])) * 25.);
output.push_back(!countToA ? 0. : (std::sqrt((float)sumSqToA / (float)countToA - output[0] * output[0])) * 25.);
output[0] *= 25.;
// Avg ToT
output.push_back(!countTot ? 0. : (float)sumTot / (float)countTot);
Expand Down Expand Up @@ -1728,8 +1721,8 @@ void ITSThresholdCalibrator::addDatabaseEntry(
o2::dcs::addConfigItem(this->mTuning, "ChipDbID", std::to_string(confDBid));
o2::dcs::addConfigItem(this->mTuning, "Tot", std::to_string(data[2])); // time over threshold
o2::dcs::addConfigItem(this->mTuning, "TotRms", std::to_string(data[3])); // time over threshold rms
o2::dcs::addConfigItem(this->mTuning, "Rt", std::to_string(data[0])); // rise time
o2::dcs::addConfigItem(this->mTuning, "RtRms", std::to_string(data[1])); // rise time rms
o2::dcs::addConfigItem(this->mTuning, "ToA", std::to_string(data[0])); // rise time
o2::dcs::addConfigItem(this->mTuning, "ToARms", std::to_string(data[1])); // rise time rms
}

//- Pulse shape 2D: avgToT, rmsToT, MTC, rmsMTC, avgMTCD, rmsMTCD, avgMPL, rmsMPL, avgMPLC, rmsMPLC
Expand Down