| Title: | Performance update of an event-type based analysis for the Cherenkov Telescope Array |
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| Authors: | ID Bernete, J. (Author)
ID Bhattacharyya, Saptashwa (Author)
ID Pérez Romero, Judit (Author)
ID Stanič, Samo (Author)
ID Vodeb, Veronika (Author)
ID Vorobiov, Serguei (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author)
ID Živec, Miha (Author), et al. |
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| Files: |  ICRC2023_738.pdf (1,08 MB)
MD5: F6FA9A0F1D02469B21D57EBDA3920E00
 https://pos.sissa.it/444
https://pos.sissa.it/444/738/pdf
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The Cherenkov Telescope Array (CTA) will be the next-generation observatory in the field of very-high-energy (20 GeV to 300 TeV) gamma-ray astroparticle physics. The traditional approach to data analysis in this field is to apply quality cuts, optimized using Monte Carlo simulations, on the data acquired to maximize sensitivity. Subsequent steps of the analysis typically use the surviving events to calculate one set of instrument response functions (IRFs) to physically interpret the results. However, an alternative approach is the use of event types, as implemented in experiments such as the Fermi-LAT. This approach divides events into sub-samples based on their reconstruction quality, and a set of IRFs is calculated for each sub-sample. The sub-samples are then combined in a joint analysis, treating them as independent observations. In previous works we demonstrated that event types, classified using Machine Learning methods according to their expected angular reconstruction quality, have the potential to significantly improve the CTA angular and energy resolution of a point-like source analysis. Now, we validated the production of event-type wise full-enclosure IRFs, ready to be used with science tools (such as Gammapy and ctools). We will report on the impact of using such an event-type classification on CTA high-level performance, compared to the traditional procedure. |
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| Keywords: | Cherenkov Telescope Array, CTA, very-high-energy gamma-ray astroparticle physics, instrument response functions, machine learning |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2023 |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-15 |
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| PID: | 20.500.12556/RUNG-8452-7e59d9fd-33e5-7f59-075b-1a014b15e1b4  |
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| COBISS.SI-ID: | 165800451 |
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| UDC: | 539.1 |
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| ISSN on article: | 1824-8039 |
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| NUK URN: | URN:SI:UNG:REP:UOJOBVWJ |
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| Publication date in RUNG: | 26.09.2023 |
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| Views: | 637 |
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| Downloads: | 6 |
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