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Bug #21170

No SimChannels

Added by Rhiannon Jones 11 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Start date:
10/16/2018
Due date:
% Done:

0%

Estimated time:
First Occurred:
Occurs In:
Duration:

Description

When running AnaTree there is this frequent error when running this command:

lar -c standard_anatree_sbnd.fcl -s /pnfs/sbnd/persistent/sbndpro/SBNWorkshop0318/v06_70_01_01_SBNWorkshop0318/prodgenie_nu_singleinteraction_cryostat_gsimple-configd-v1/reco/5008435_0/prodgenie_sbnd_GenieGen-20180315T122730_c61dcedc-9f10-41c3-b876-03979165b6e7_G4-20180315T133000_DetSim-20180315T190259_Reco-20180316T015122.root -n 10

Error snippet:

%MSG-w BackTracker:   sbndcode/AnalysisTree/AnalysisTree:analysistree@BeginModule  16-Oct-2018 17:49:11 CDT run: 1 subRun: 285 event: 28401
caught exception
---- BackTracker BEGIN
No sim::SimChannel corresponding to channel: 2086
---- BackTracker END

Which is also found when running Pandora:

%MSG-s ArtException:  PostEndJob 16-Oct-2018 17:52:28 CDT ModuleEndJob
cet::exception caught in art
---- OtherArt BEGIN
---- EventProcessorFailure BEGIN
EventProcessor: an exception occurred during current event processing
---- ScheduleExecutionFailure BEGIN
Path: ProcessingStopped.
---- LArPandora BEGIN
LArPandora::CreatePandoraInput - no sim channels found, backtracker module must be set in FHiCL cet::exception going through module StandardPandora/pandoraWriter run: 1 subRun: 285 event: 28404
---- LArPandora END
Exception going through path reco
---- ScheduleExecutionFailure END
---- EventProcessorFailure END
---- OtherArt END
%MSG
Art has completed and will exit with status 1.

Both are in the cases where backtracker is trying to be used.
Something else which I have found about the issue is that it appears to be happening only when the true neutrino vertex is not contained within the active volume of the detector, running over the same file and counting how many times there are no SimChannels and how many of those times the true vertex is outside the active volume of the detector:

Number of events                                               : 100
Number of events with no SimChannels : 24
Number of events with no SimChannels & outside fiducial volume : 24


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