SLSTR Level-1 processing is divided into three different modes:
The SLSTR Level-1B product is generated during observation and joint processing mode.
The SLSTR Level-1B product gathers, for each view and for each channel, the full-resolution geolocated radiometric measurements.
For thermal IR and fire channels (labelled as S7 to S9 and F1, F2 for fire channels), the radiometric measurements are expressed in Top Of Atmosphere (TOA) brightness temperatures. In the case of visible / NIR / SWIR channels (labelled as S1 to S6 channels), these measurements are expressed in TOA radiances.
The radiometric measurements are indexed according to the across track and along track direction:
The SLSTR Level-1B product also contains: