12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room F(201/202/203/204)

[GA155] ASTRI SST-2M prototype and mini-array simulation chain, data reduction software, and archive in the framework of the CTA


  • Maria Concetta MACCARONE

Primary authors



The Cherenkov Telescope Array (CTA) is a worldwide project aimed at building the next-generation ground-based gamma-ray observatory. CTA will be composed by two arrays of telescopes of different sizes, one in each Earth hemisphere, to achieve a full sky-coverage and a ten-fold improvement in sensitivity over an unprecedented energy range extending from 20 GeV to 300 TeV. Within the CTA project, the Italian National Institute for Astrophysics (INAF) is developing an end-to-end prototype of the CTA Small-Size Telescopes in dual-mirror (SST-2M) Schwarzschild-Couder configuration. The prototype, named ASTRI SST-2M, is located at the INAF "M.C. Fracastoro" observing station in Serra La Nave (Mt. Etna, Sicily) and is currently undergoing the scientific and performance validation phase. A mini-array of (at least) nine ASTRI telescopes has been proposed to be deployed at the southern CTA site, by means of a collaborative effort carried out by institutes from Italy, Brazil, and South-Africa. The CTA/ASTRI group is developing a full end-to-end software package for the reduction of the raw data acquired with both ASTRI-SST-2M prototype and mini-array to the final scientific products. The group is also undertaking a massive production of Monte Carlo simulation data using the detector Monte Carlo software adopted by the CTA consortium. Simulated data are being used to validate the simulation chain and evaluate the ASTRI-SST-2M prototype and mini-array performance. Both activities are also carried on in the framework of the European H2020-ASTERICS (Astronomy ESFRI and Research Infrastructure Cluster) project. Also data archiving system, for both ASTRI SST-2M prototype and mini-array, has been developed by INAF team. The archive system provides the data access at different user-levels and for different use-cases, each one with a customized data organization. A dedicated framework to access, browse and download produced data has been developed within a scientific gateway utility. In this contribution, we present the architecture and the main components of the ASTRI data handling systems and report the status of their development.