SAC-C data is distributed to end-user in a format similar to EOSAT Fast Format version B. Data is delivered in a unique processing level defined like 1B.

 

All the data is delivered in one CD (in some cases may be two), it contains a header file in ASCII format with the product parameters according to format specifications and five binary files, one for each band. The CD structure is the following:

 

File	Description
atencion	Copyright note.
BAND1.dat	Image file (band 1).
BAND2.dat	Image file (band 2).
BAND3.dat	Image file (band 3).
BAND4.dat	Image file (band 4).
BAND5.dat	Image file (band 5).
header.dat	Header file, contains information relative to the scene.
JPG file	JPG file containing a Quick Look of the captured scene. In the file name it is specified the time and date of the image download by the Ground Station.
TXT file	Additional information used for product description in the image catalog. In the file name it is specified the time and date of the image download by the Ground Station.
geo_loc.txt	Additional information. File format.
egeo_loc.txt	Additional information. File format.

 

 

The product has the following corrections:

 

Radiometric Corrections based on pre-launch calibrations and their monthly updates from sensor re-calibrations through later acquisitions.

 

Geometric Corrections owing to known system alterations (systematic corrections). There are made corrections of the effects produced by satellite attitude changes, that is the pitch, roll and yaw movements, by satellite altitude and velocity variations, and the skew produced by Earth rotation. Corrections are based in attitude determination and orbit state from on-board measured data along the complete orbit, in particular at the moment of the image capture. These additional data are commonly named telemetry or housekeeping data.