Eventdisplay reconstruction and analysis pipeline for ground-based imaging atmospheric Cherenkov Telescopes

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Published July 15, 2022 | Version 4.9.0-alpha.2
Software Open

Eventdisplay: an Analysis and Reconstruction Package for VERITAS

Authors/Creators

  • 1. DESY
  • 2. Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware, Newark, DE 19716, USA

Description

Eventdisplay v490 is a major update of the reconstruction and analysis code used for VERITAS. This update includes significant changes which break the analysis of older versions at certain stages.

Running this version requires also updates to the newest versions of Eventdisplay_AnalysisScripts_VTS and Eventdisplay_AnalysisFiles_VTS (private repository).

This is a pre-release with substantial changes expected in near future. Please try it out, but don't use it for science publications. Changes with relation to v490-alpha.7 are:

Combine lookup tables

More flexibility to find correct NSB bins when combing lookup tables; add command line parameters noise tolerance in combineEffectiveAreas.

Propagation of cluster cleaning from v5

Propagated cluster cleaning from v5 to v490.

  • removes islands with N pixels or with size smaller than a certain value
  • settings see EVNDISP.reconstruction.runparameter.CC.v4x
Addition of AP cleaning

Addition of removal of islands consisting of a single image and a single border pixel, triggered by Jamie's study on increased afterpulsing contributions.

  • switch this on by adding one parameter 1 to * -1 IMAGECLEANINGTHRESHOLDS 5. 2.5 1
  • settings see EVNDISP.reconstruction.runparameter.AP.v4x
Improvement of optimized next-neighbour cleaning

Improved handling of short runs when there are not enough entries in the pedestal histograms to determine correct cleaning cuts. In this case, a single average histogram is filled to calculate the cleaning thresholds.

Other changes
  • improved installation hints
  • critical bug fix in filling lookup tables, using the correct direction values
What's Changed

Full Changelog: https://github.com/VERITAS-Observatory/EventDisplay_v4/compare/v490-alpha.7...v490-alpha.8

Notes

If you use this software, please cite it using these metadata.

Files

VERITAS-Observatory/EventDisplay_v4-v490-alpha.8.zip

Files (1.4 MB)

Additional details

Related works

Is supplement to
https://github.com/VERITAS-Observatory/EventDisplay_v4/tree/v490-alpha.8 (URL)