fix in FT0 digitization (time wrt BC)

Author: noferini

Detectors/FIT/FT0/simulation/src/Digitizer.cxx

@@ -220,7 +220,7 @@ void Digitizer::process(const std::vector<o2::ft0::HitType>* hits,
     // Subtract time-of-flight from hit time
     const Float_t timeOfFlight = hit.GetPos().R() / o2::constants::physics::LightSpeedCm2NS;
     const Float_t timeOffset = is_A_side ? params.hitTimeOffsetA : params.hitTimeOffsetC;
-    Double_t hit_time = hit.GetTime() - timeOfFlight + timeOffset;
+    Double_t hit_time = hit.GetTime() - timeOfFlight + timeOffset + mIntRecord.getTimeOffsetWrtBC();
 
     if (hit_time > 150) {
       continue; // not collect very slow particles
@@ -285,7 +285,7 @@ void Digitizer::storeBC(BCCache& bc,
     if (mCalibOffset) {
       miscalib = mCalibOffset->mTimeOffsets[ipmt];
     }
-    int smeared_time = 1000. * (*cfd.particle - params.mCfdShift) * params.mChannelWidthInverse + miscalib + int(1000. * mIntRecord.getTimeOffsetWrtBC() * params.mChannelWidthInverse);
+    int smeared_time = 1000. * (*cfd.particle - params.mCfdShift) * params.mChannelWidthInverse + miscalib; // + int(1000. * mIntRecord.getTimeOffsetWrtBC() * params.mChannelWidthInverse);
     bool is_time_in_signal_gate = (smeared_time > -params.mTime_trg_gate && smeared_time < params.mTime_trg_gate);
     float charge = measure_amplitude(channel_times) * params.mCharge2amp;
     float amp = is_time_in_signal_gate ? params.mMV_2_Nchannels * charge : 0;