The purpose of this document is to provide an exhaustive list of all data operationally produced by the CSC Ground Segment for all Sentinel missions.

The data generated by the CSC Ground Segment is classified as belonging to one of the following categories:

• Sentinel User Level Data: Sentinel payload data generated by the CSC Ground Segment from instrument observations and available to users.
• Sentinel Engineering Level Data: Sentinel payload data generated by the CSC Ground Segment for instrument performance monitoring, calibration activities or as input for the processing of User Level Data. This data is used for operational purposes and is typically not available to users.
• Satellite Housekeeping Telemetry: Sentinel satellite data generated by the CSC Ground Segment for satellite telemetry monitoring purposes. This data is not available to users.

Note: Auxiliary Data (used in support to the generation of the User Level Data, Engineering Level Data or Housekeeping Telemetry) are not within the scope of this document.

The purpose of this document is to list the Auxiliary data managed as part of the CSC Ground Segment for all Sentinel missions. It also indicates which Auxiliary Data Files are to be distributed via the Copernicus Data Access Service and whether access to these will be restricted or not.