OpenCADC Multi-site Science Data Discovery and Access

Access to scientific metadata is crucial for scientific work. In this feature, we propose to continue the work done in the previous IP18 and to offer authorized users the capability to query the ObsCore table using tools such as TOPCAT or astroquery, granting access to valuable metadata of datasets stored within the distributed data system, leveraging the SI infrastructure. Furthermore, authorized users are also able to query the storage inventory and retrieve files utilizing astroquery. In addition to authorized access, the system demonstrates its commitment to openness and inclusivity by providing support for anonymous access to public data, allowing seamless exploration and retrieval of datasets without the need for user authentication.

AC1: Demonstration that a user can query metadata. A demo showing a user querying the ObsCore table using TOPCAT. Alternatively a python notebook using astroquery to query the metadata  of datasets stored in the distributed data system based on SI. The retrieved metadata should include essential information such as dataset descriptions, observation parameters, and data availability details.

AC2: Demonstration that an authorised user can access private data and an anonymous user can access public data. Based on the output of query demonstrated in AC1, the system should accurately retrieve and provide access to the requested files. The retrieval process should be efficient and reliable, ensuring that the authorized user can seamlessly access and download the files they require from the storage inventory.

Presentation:

• https://docs.google.com/presentation/d/1WJAsGfZbB4-rIZ12bubf1SWgFOLViUwTFYIT_VLMOpI/edit?usp=sharing

Demo:
- https://skatelescope.zoom.us/rec/share/wUt8XpI1vx4tzFWHYU_CakXV2r3tJmjXz2DSntkGmryzcZ474OnZyj_N1cUA65m-.yNrrP_xxvqk8pzPN  

Passcode: B&w.Hm5D