Statistics in SNAP

snap
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Hi Lukáš,

USGS stores DN in the GeoTiff files of Landsat 8. In the *_MTL.txt are conversion factors to radiances and reflectances stored.
If you use the MTL.txt file to open the L8 data you will get the radiances. There is a property which lets you switch to reflectances.

If not present, create a file ‘s3tbx.properties’ in the folder [USER_HOME]/.snap/etc
in this file ‘s3tbx.properties’ add the entry

s3tbx.landsat.readAs=reflectance

If you open the GeoTiff files individually you will get the DN values.