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 for TIR channels and F1, F2 for fire channels), the radiometric measurements are expressed in Top Of Atmosphere (TOA) brightness temperatures. In the case of visible / SWIR channels (labelled as S1 to S6), these measurements are expressed in TOA radiances.
The radiometric measurements are indexed according to the across track and along track direction:
There are essentially eight 'grids' due to the TIR 1km infrared 'i' grid, the 'f' grid specific to F1, and the two different 0.5km grids 'a', 'b'. Each of these is represented on the nadir and oblique views, making a total of eight.
The SLSTR Level-1B product also contains the following annotation data sets (ADSs):