Fix MVD digitization

Fix the digi time. There were two problems pilled up. The first problem was to
get the event time to late during execution. By accident the event time was
then also used twice, once when creating the temporary CbmPixelCharge buffer
and a second time when creating the final digi.

Flush all data which is still stored in the temporary buffer at the end of
the run.

sim/detectors/mvd/plugins/tasks/CbmMvdSensorDigitizerTask.cxx

@@ -418,6 +418,9 @@ void CbmMvdSensorDigitizerTask::Exec()
   fDigiMatch->Clear("C");
 
 
+    //Int_t nDigis = 0;
+    GetEventInfo(fInputNr, fEventNr, fEventTime);
+
   if (fInputPoints->GetEntriesFast() > 0) {
 
     for (Int_t iPoint = 0; iPoint < fInputPoints->GetEntriesFast(); iPoint++) {
@@ -448,8 +451,6 @@ void CbmMvdSensorDigitizerTask::Exec()
       ProducePixelCharge(point);
     }  //loop on MCpoints
 
-    //Int_t nDigis = 0;
-    GetEventInfo(fInputNr, fEventNr, fEventTime);
 
     ProduceDigis();
     CleanPixelChargeList();
@@ -553,12 +554,12 @@ void CbmMvdSensorDigitizerTask::FlushBuffer(CbmMvdPixelCharge* pixel, Int_t i)
 
   new ((*fDigis)[nDigis])
     CbmMvdDigi(fSensor->GetSensorNr(), pixel->GetX(), pixel->GetY(), diodeCharge, fPixelSizeX, fPixelSizeY,
-               fEventTime + analogHitTime, fSensor->GetFrameNumber(fEventTime + analogHitTime, pixel->GetY()));
+               analogHitTime, fSensor->GetFrameNumber(analogHitTime, pixel->GetY()));
 
 
   new ((*fOutputBuffer)[nDigis])
     CbmMvdDigi(fSensor->GetSensorNr(), pixel->GetX(), pixel->GetY(), diodeCharge, fPixelSizeX, fPixelSizeY,
-               fEventTime + analogHitTime, fSensor->GetFrameNumber(fEventTime + analogHitTime, pixel->GetY()));
+               analogHitTime, fSensor->GetFrameNumber(analogHitTime, pixel->GetY()));
 
   // To Do: Time and pixel charge are now in an array. Write function testing if the pixel is busy at a given time.
   //        Write function which computes the status of the pixel at the time of readout and which cell one has to readout.
@@ -1303,17 +1304,18 @@ void CbmMvdSensorDigitizerTask::ReInit(CbmMvdSensor* sensor)
 void CbmMvdSensorDigitizerTask::Finish()
 {
 
-  // In time base mode flush the buffers after the last event
-  if (!fEventMode) {
+  // Convert the CbmMvdPixelCharge still in the buffer to CbmMvdDigis
+  fOutputBuffer->Clear("C");
+  fDigis->Clear("C");
+  fDigiMatch->Clear("C");
 
-    GetEventInfo(fInputNr, fEventNr, fEventTime);
-    LOG(debug) << "CbmMvdSensorDigitizerTask::Finish() - NumberOfPixelCharge =  " << fPixelCharge->GetEntriesFast();
+  GetEventInfo(fInputNr, fEventNr, fEventTime);
+  LOG(debug) << "CbmMvdSensorDigitizerTask::Finish() - NumberOfPixelCharge =  " << fPixelCharge->GetEntriesFast();
 
-    for (Int_t i = 0; i < fPixelCharge->GetEntriesFast(); i++) {
-      CbmMvdPixelCharge* pixel = (CbmMvdPixelCharge*) fPixelCharge->At(i);
+  for (Int_t i = 0; i < fPixelCharge->GetEntriesFast(); i++) {
+    CbmMvdPixelCharge* pixel = (CbmMvdPixelCharge*) fPixelCharge->At(i);
 
-      FlushBuffer(pixel, i);
-    }
+    FlushBuffer(pixel, i);
   }
 
   // PrintParameters();