From 2d86a44964c3370429b2ebced633ebb9f140d7a5 Mon Sep 17 00:00:00 2001
From: Dominik Smith <d.smith@gsi.de>
Date: Thu, 10 Nov 2022 11:34:04 +0100
Subject: [PATCH] Changed event-time computation from mean of Tzd digis to
earliest Tzd digi in CbmAlgoBuildRawEvents.
---
.../eventbuilder/digis/CbmAlgoBuildRawEvents.cxx | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/reco/eventbuilder/digis/CbmAlgoBuildRawEvents.cxx b/reco/eventbuilder/digis/CbmAlgoBuildRawEvents.cxx
index e93fcd43b4..29393964b7 100644
--- a/reco/eventbuilder/digis/CbmAlgoBuildRawEvents.cxx
+++ b/reco/eventbuilder/digis/CbmAlgoBuildRawEvents.cxx
@@ -613,17 +613,19 @@ Bool_t CbmAlgoBuildRawEvents::HasTrigger(CbmEvent* event)
void CbmAlgoBuildRawEvents::SetTzdEventTime(CbmEvent* event)
{
- int32_t iNbDigis = event->GetNofData(ECbmDataType::kT0Digi);
+ const int32_t iNbDigis = event->GetNofData(ECbmDataType::kT0Digi);
if (0 < iNbDigis) {
- double eventTime = 0;
- for (int idigi = 0; idigi < iNbDigis; ++idigi) {
- uint idx = event->GetIndex(ECbmDataType::kT0Digi, idigi);
- const CbmTzdDigi* pDigi = GetDigi<CbmTzdDigi>(idx);
+ uint idx = event->GetIndex(ECbmDataType::kT0Digi, 0);
+ const CbmTzdDigi* pDigi = GetDigi<CbmTzdDigi>(idx);
+ double eventTime = pDigi->GetTime();
+
+ for (int idigi = 1; idigi < iNbDigis; ++idigi) {
+ idx = event->GetIndex(ECbmDataType::kT0Digi, idigi);
+ pDigi = GetDigi<CbmTzdDigi>(idx);
if (nullptr == pDigi) continue;
- eventTime += pDigi->GetTime();
+ eventTime = std::min(pDigi->GetTime(), eventTime);
}
- eventTime /= iNbDigis;
event->SetStartTime(eventTime);
}
}
--
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