/**
* Method rewrites Reco Signal to Phys Signal.
* Time of Signal set to time of the Leading Signal Channel at the lowest threshold.
* Other fields are set to -1, quality fields set to 0.
*/
JPetPhysSignal SignalTransformer::createPhysSignal(const JPetRecoSignal& recoSignal)
{
JPetPhysSignal physSignal;
physSignal.setRecoSignal(recoSignal);
physSignal.setPhe(-1.0);
physSignal.setQualityOfPhe(0.0);
physSignal.setQualityOfTime(0.0);
physSignal.setRecoFlag(recoSignal.getRecoFlag());
std::vector<JPetSigCh> leadingSigChVec = recoSignal.getRawSignal().getPoints(
JPetSigCh::Leading, JPetRawSignal::ByThrValue
);
physSignal.setTime(leadingSigChVec.at(0).getValue());
return physSignal;
}
vector<JPetHit> TaskC::createHits(const vector<JPetRawSignal>& signals)
{
vector<JPetHit> hits;
for (auto i = signals.begin(); i != signals.end(); ++i) {
for (auto j = i; ++j != signals.end();) {
if (i->getPM().getScin() == j->getPM().getScin()) {
// found 2 signals from the same scintillator
// wrap the RawSignal objects into RecoSignal and PhysSignal
// for now this is just wrapping opne object into another
// in the future analyses it will involve more logic like
// reconstructing the signal's shape, charge, amplitude etc.
JPetRecoSignal recoSignalA;
JPetRecoSignal recoSignalB;
JPetPhysSignal physSignalA;
JPetPhysSignal physSignalB;
// assign sides A and B properly
if (
(i->getPM().getSide() == JPetPM::SideA)
&& (j->getPM().getSide() == JPetPM::SideB)
) {
recoSignalA.setRawSignal(*i);
recoSignalB.setRawSignal(*j);
} else if (
(j->getPM().getSide() == JPetPM::SideA)
&& (i->getPM().getSide() == JPetPM::SideB)
) {
recoSignalA.setRawSignal(*j);
recoSignalB.setRawSignal(*i);
} else {
// if two hits on the same side, ignore
WARNING("TWO hits on the same scintillator side we ignore it");
continue;
}
if ( recoSignalA.getRawSignal().getNumberOfPoints(JPetSigCh::Leading) < 4 ) continue;
if ( recoSignalB.getRawSignal().getNumberOfPoints(JPetSigCh::Leading) < 4 ) continue;
bool thresholds_ok = true;
for (int i = 1; i <= 4; ++i) {
if ( recoSignalA.getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading).count(i) < 1 ) {
thresholds_ok = false;
}
if ( recoSignalB.getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading).count(i) < 1 ) {
thresholds_ok = false;
}
}
if (thresholds_ok == false) {
continue;
}
physSignalA.setRecoSignal(recoSignalA);
physSignalB.setRecoSignal(recoSignalB);
auto leading_points_a = physSignalA.getRecoSignal().getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading);
auto leading_points_b = physSignalB.getRecoSignal().getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading);
//skip signals with no information on 1st threshold
// if(leading_points_a.count(1) == 0) continue;
// if(leading_points_b.count(1) == 0) continue;
physSignalA.setTime(leading_points_a.at(1));
physSignalB.setTime(leading_points_b.at(1));
JPetHit hit;
hit.setSignalA(physSignalA);
hit.setSignalB(physSignalB);
hit.setScintillator(i->getPM().getScin());
hit.setBarrelSlot(i->getPM().getScin().getBarrelSlot());
physSignalA.setTime(physSignalA.getRecoSignal().getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading).at(1));
physSignalB.setTime(physSignalB.getRecoSignal().getRawSignal().getTimesVsThresholdNumber(JPetSigCh::Leading).at(1));
hit.setTime( 0.5 * ( hit.getSignalA().getTime() + hit.getSignalB().getTime()) );
hits.push_back(hit);
getStatistics().getCounter("No. found hits")++;
}
}
}
return hits;
}
JPetPhysSignal JPetSimplePhysSignalReco::createPhysSignal(JPetRecoSignal& recoSignal)
{
// create a Phys Signal
JPetPhysSignal physSignal;
// use the values from Reco Signal to set the physical properties of signal
// here, a dummy example - much more sophisticated procedures should go here
physSignal.setPhe( recoSignal.getCharge() * 1.0 + 0.0 );
physSignal.setQualityOfPhe(1.0);
// in the previous module (C2) we have reconstructed one time at arbitrary
// threshold - now we retrieve it by getting a map of times vs. thresholds,
// and taking its first (and only) element by the begin() iterator. We get
// an std::pair, where first is the threshold value, and second is time.
double time = recoSignal.getRecoTimesAtThreshold().begin()->second;
// -----------------------------------------------------------
//
// Estimate the time of the signal based on raw signal samples
JPetRawSignal rawSignal = recoSignal.getRawSignal();
if (rawSignal.getNumberOfPoints(JPetSigCh::Leading) >= 2
&& rawSignal.getNumberOfPoints(JPetSigCh::Trailing) >= 2) {
// get number of points on leading edge
int iNumPoints = rawSignal.getNumberOfPoints(JPetSigCh::Leading);
std::vector<JPetSigCh> leadingPoints = rawSignal.getPoints(
JPetSigCh::Leading, JPetRawSignal::ByThrValue);
// create vectors
vector<float> vecTime(iNumPoints);
vector<float> vecVolt(iNumPoints);
for (int j = 0; j < iNumPoints; j++) {
vecTime(j) = leadingPoints.at(j).getValue();
vecVolt(j) = leadingPoints.at(j).getThreshold();
}
// To evaluate time below parameters should be specified:
// the parameter alfa of the below expression need to be specified:
// vecVolt = a(t - vecTime)^(alfa);
// Here alfa is fixed for the linear case.
// Caution! alfa has to be an integer and positive value, negative values are ignored.
int alfa = getAlpha();
// thr_sel specifies the threshold level to read the time value,
// and with thr_sel the below equation may be solved:
// thr_sel = a(t - time)^(alfa);
// Caution! thr_sel has to negative, and for positive values the program will set thr_sel equal to 0.
float thr_sel = getThresholdSel();
// The evaluation of time based on alfa and thr_sel
assert(thr_sel < 0);
assert(alfa > 0);
time = static_cast<double>(polynomialFit(vecTime, vecVolt, alfa, thr_sel));
}
// ------------------------------------------------------------
physSignal.setTime(time);
physSignal.setQualityOfTime(1.0);
// store the original JPetRecoSignal in the PhysSignal as a processing history
physSignal.setRecoSignal(recoSignal);
return physSignal;
}