I am trying to figure out if the TOA Reflectance range should be limited to 0 and 1 or not.
If I got it right, the TOA Reflectance can be obtained by dividing the pixel values in Sentinel-2 L1C images by the Quantification Value, which is 10’000.
The part that confuses me is that for many images I am using, the maximum pixel value is above 10’000. For instance, at the end of the above post, the conclusion seems to be that for the given image, the correct value range is 1662 to 14254. I got the same range when computing the histogram using SNAP 4.0, and using gdalinfo with GDAL 2.1.0.
This would mean, that the maximum TOA Reflectance is 1.4254.
So my question is:
If I see a maximum pixel value above 10’000 in a Sentinel-2 L1C image, is that a problem with the jpeg library or are thes values correct?
Thanks a lot in advance for your help.