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Colin Carlile, researcher at Lund Observatory. Photo.

Colin Carlile

Guest researcher

Colin Carlile, researcher at Lund Observatory. Photo.

Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array

Author

  • M. Nöthe
  • K. Kosack
  • L. Nickel
  • M. Peresano
  • C. Carlile
  • D. Dravins
  • A. Zmija

Summary, in English

The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory currently under construction. It will improve over the current generation of imaging atmospheric Cherenkov telescopes (IACTs) by a factor of five to ten in sensitivity and it will be able to observe the whole sky from a combination of two sites: a northern site in La Palma, Spain, and a southern one in Paranal, Chile. CTA will also be the first open gamma-ray observatory. Accordingly, the data analysis pipeline is developed as open-source software. The event reconstruction pipeline accepts raw data of the telescopes and processes it to produce suitable input for the higher-level science tools. Its primary tasks include reconstructing the physical properties of each recorded shower and providing the corresponding instrument response functions. ctapipe is a framework providing algorithms and tools to facilitate raw data calibration, image extraction, image parameterization and event reconstruction. Its main focus is currently the analysis of simulated data but it has also been successfully applied for the analysis of data obtained with the first CTA prototype telescopes, such as the Large-Sized Telescope 1 (LST-1). pyirf is a library to calculate IACT instrument response functions, needed to obtain physics results like spectra and light curves, from the reconstructed event lists. Building on these two, protopipe is a prototype for the event reconstruction pipeline for CTA. Recent developments in these software packages will be presented. © Copyright owned by the author(s) under the terms of the Creative Commons.

Department/s

  • Lund Observatory - Undergoing reorganization

Publishing year

2022

Language

English

Publication/Series

Proceedings of Science

Volume

395

Document type

Conference paper

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • Gamma rays
  • Information analysis
  • Observatories
  • Open source software
  • Open systems
  • Telescopes
  • Cherenkov telescope arrays
  • Current generation
  • Event reconstruction
  • Gamma ray observatories
  • Imaging atmospheric Cherenkov telescopes
  • Instrument response functions
  • Open-source softwares
  • Paranal
  • Primary task
  • Science tools
  • Pipelines

Conference name

37th International Cosmic Ray Conference

Conference date

2021-07-12 - 2021-07-23

Conference place

Berlin, Germany

Status

Published

ISBN/ISSN/Other

  • ISSN: 1824-8039