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LUTH - Observatoire de Paris, Meudon
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Abstract Reference: 30821
Identifier: P5.5
Presentation: Poster presentation
Key Theme: 5 Data Models in Astrophysics

Structuring metadata for the Cherenkov Telescope Array

Servillat Mathieu, Boisson Catherine, Lefaucheur Julien, Bregeon Johan, Sanguillon Michèle, Contreras Jose Luis

The landscape of ground-based gamma-ray astronomy is drastically changing with the perspective of the Cherenkov Telescope Array (CTA). For the first time in this energy domain, CTA will be operated as an observatory open to the astronomy community. In this context, a structured data model is being developed for a CTA observation. The data model includes different classes of metadata describing the project definition, the configuration of the instrument for the observation, the ambient conditions, the data acquisition and the data processing. This last part relies on the Provenance data model developed within the Virtual Observatory (VO), for which CTA is one of the main use cases. Furthermore, the whole CTA data model should be compatible with the diffusion of data through the VO. We thus developed a web-based data diffusion prototype to test this requirement and ensure the compliancy. I will present the latest developments on the CTA data model, its implementation as a data diffusion service, and the implications for related developments within the project.