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Performance of a proposed event-type based analysis for the Cherenkov Telescope Array

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. Classically, data analysis in the field maximizes sensitivity by applying quality cuts on the data acquired. These cuts, optimized using Monte Carlo simulations, select higher quality events from the initial dataset. Subsequent steps of the analysis typically use the surviving events to calculate one set of instrument response functions (IRFs). An alternative approach is the use of event types, as implemented in experiments such as the Fermi-LAT. In this approach, events are divided 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. This leads to an improvement in performance parameters such as sensitivity, angular and energy resolution. Data loss is reduced since lower quality events are included in the analysis as well, rather than discarded. In this study, machine learning methods will be used to classify events according to their expected angular reconstruction quality. We will report the impact on CTA high-level performance when applying such an event-type classification, compared to the classical procedure.

Año de publicación:

2022

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Conference Object

    Estado:

    Acceso restringido

    Áreas de conocimiento:

      Áreas temáticas:

      • Métodos informáticos especiales

      Contribuidores:

      Abe H.Abe H.
      Hassan T.Hassan T.
      Aharonian F.Aharonian F.
      Gonzalez J.B.Gonzalez J.B.
      Adhikari S.S.Adhikari S.S.
      Barbier C.Barbier C.
      Bajtlik S.Bajtlik S.
      Babic A.Babic A.
      Adam R.Adam R.
      Bernlöhr K.Bernlöhr K.
      Balazs C.Balazs C.
      Antonuccio V.Antonuccio V.
      Antonelli L.A.Antonelli L.A.
      Barnard M.Barnard M.
      Beck G.Beck G.
      Araya M.Araya M.
      Aguado-Ruesga I.Aguado-Ruesga I.
      Arrabito L.Arrabito L.
      Amans J.P.Amans J.P.
      Alispach C.Alispach C.
      Abusleme A.Abusleme A.
      Alfaro J.Alfaro J.
      Backes M.Backes M.
      Barrio J.A.Barrio J.A.
      Acero F.Acero F.
      Aragunde Gutierrez J.Aragunde Gutierrez J.
      Bastieri D.Bastieri D.
      Bednarek W.Bednarek W.
      Bamba A.Bamba A.
      Barbosa Martins V.Barbosa Martins V.
      Bautista-González R.Bautista-González R.
      Bauer C.Bauer C.
      Abe S.Abe S.
      Ashley M.Ashley M.
      Ambrosio M.Ambrosio M.
      Amato E.Amato E.
      Asano K.Asano K.
      Anutarawiramkul R.Anutarawiramkul R.
      Ambrosi G.Ambrosi G.
      Aguilera R.Aguilera R.
      Óscar M. MartínezÓscar M. Martínez
      A. Baquero LarrivaA. Baquero Larriva
      Barkov M.Barkov M.
      Alberdi A.Alberdi A.
      Ballet J.Ballet J.
      Attinà P.Attinà P.
      Acín Portella V.Acín Portella V.
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      Ackley K.Ackley K.
      Ammendola R.Ammendola R.
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      Abdalla H.Abdalla H.
      Acharyya A.Acharyya A.
      Berge D.Berge D.
      Bernardos M.I.Bernardos M.I.
      Arbet-Engels A.Arbet-Engels A.
      Arendt V.Arendt V.
      Anderson J.Anderson J.
      Batista P.I.Batista P.I.
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      Bandiera R.Bandiera R.
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      Baktash A.Baktash A.
      Artero M.Artero M.
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      Batista R.A.Batista R.A.
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      Ascasíbar Y.Ascasíbar Y.
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      Belmont R.Belmont R.
      Amati L.Amati L.
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      Bellizzi L.Bellizzi L.
      Becherini Y.Becherini Y.
      Armstrong T.Armstrong T.
      Arsioli B.Arsioli B.
      Barai P.Barai P.
      Aloisio R.Aloisio R.
      Alfaro R.Alfaro R.
      Antoranz P.Antoranz P.
      Arqueros F.Arqueros F.
      Benbow W.Benbow W.
      Barres De Almeida U.Barres De Almeida U.
      Araudo A.Araudo A.
      Singh C.B.Singh C.B.
      Aguirre-Santaella A.Aguirre-Santaella A.
      Bernardini E.Bernardini E.
      Balmaverde B.Balmaverde B.
      Aramo C.Aramo C.
      Aschersleben J.Aschersleben J.
      Ambrogi L.Ambrogi L.
      Arcaro C.Arcaro C.