Inquiry Regarding Data Format Issue in VSO-Backed Fido Search and Fetch Calls
Hardik Jaiswal
I hope this email finds you well. I am currently investigating an issue related to SunPy's integration with the Virtual Solar Observatory (VSO), specifically regarding the format of returned image archives for long-duration queries.
The issue, titled "VSO-backed Fido search and fetch calls sometimes return tar archives for longer duration queries," pertains to cases where image requests within a specific date range return TAR archives instead of the expected ZIP format. Since ZIP archives are the intended format for packaging the images, this behavior is unexpected and causes inconsistencies in data retrieval.
Upon further analysis, I have identified that this could be a problem on both SunPy's and VSO's ends. Before proceeding with further debugging on SunPy’s side, I would like to get some insights from the VSO team regarding:
- The expected format for data retrieval in such queries.
- Whether there are any specific conditions under which TAR archives are returned instead of ZIP.
- Any documentation or internal logic that governs how the data format is determined.
The SunPy maintainers have acknowledged the need to clarify this with VSO first, so I would appreciate any guidance or information you could provide regarding this matter.
Looking forward to your response. Please let me know if you need any additional details from my side.
Best regards,
Hardik Jaiswal