Minimize Level-1 Products - Calibration Mode

Calibration mode outputs only the VISCAL ADF, used to calibrate the next orbit. The product is composed of one file and associated metadata.

The SLSTR Level-1 VISCAL data file contains summary visible and shortwave infrared calibration information derived from the VISCAL solar illumination period located within a previous product, typically for the orbit immediately preceding the current product. This file, named SL_1_VCS_AX, is produced daily in netCDF format. The following table presents the detailed content of this file.


Element name Description Dimensions
Specific Dimensions
visible_detectors Number of visible detector elements S-23  
swir_detectors Number of SWIR detector elements  
views Number of views (nadir and oblique)  
integrators Number of integrators  
Included Variables
ANX_time Time of ascending node crossing in the UTC YYYY-MM-DDThh:mm:ss.ddddddz CCSDS format 1
calibration_time Time of calibration in the UTC YYYY-MM-DDThh:mm:ss.ddddddZ CCSDS format 1
monitor_mean Monitor diode average counts 1
monitor_SD Monitor diode noise counts 1
For each Visible / NIR/ SWIR channel (S1 to S6)
S(1:6)_solar_irradiances associated solar irradiances visible_detectors, views
S(1:6)_slopes associated slopes visible_detectors, views, int
S(1:6)_VISCAL_means associated VISCAL average counts visible_detectors, views, int
S(1:6)_VISCAL_SD associated VISCAL noise counts visible_detectors, views, int
S(1:6)_BB1_means associated BB1 average counts visible_detectors, views, int
S(1:6)_BB1_SD associated BB1 noise counts visible_detectors, views, int

Detailed content of the SLSTR L1 VISCAL data file