Oasi — Daszip

If you are working with a specific institution, you should consult their internal documentation:

This is a compression format (Data Archive System Zip) used to bundle multiple telemetry or observation files into a single, smaller package for transfer and storage. 2. How to Open and Extract Files oasi daszip

Often in .fits (Flexible Image Transport System) for images or .csv / .dat for sensor readings. If you are working with a specific institution,

If you can provide the name of the program asking for this file, I can give you more targeted instructions. If you can provide the name of the

.xml or .txt files describing the time, location, and instrument settings of the observation.

If the file won't open, ensure the download was completed. These files often use "checksums" to verify integrity.

You usually need the proprietary software provided by the data issuer (e.g., OASI data management tools) to unpack these.