for the reference in the following link, section "Landsat Collection 1 LandsatLook 8-bit Quality Image":
i would like to know the following please:
1-is Landsat-8-OLI/TIRS that is mentioned in the above link the same as landsat-8-l1 mentioned in sentinelhub official website?
2-is the bits order of the band BQA mentioned in the reference mentioned above correct?
Hi @burkhard.golla,
Thank you for your questions!
1. Is Landsat-8-OLI/TIRS the same as Landsat-8-L1?
Yes, Landsat-8-OLI/TIRS and Landsat-8-L1 refer to the same Level-1 data, but they have different naming conventions. Sentinel Hub follows Landsat Collection 2, which includes both Landsat 8 and 9 under the dataset identifier landsat-ot-l1. This dataset contains all optical and thermal bands, along with the QA_PIXEL band for quality assessment.
If you’re using Sentinel Hub, you can request this dataset using landsat-ot-l1 in the Process API. More details can be found in our Sentinel Hub Landsat documentation.
2. Is the bit order of the QA band correct?
Landsat Collection 1 used a BQA band, but Sentinel Hub now follows Landsat Collection 2, which replaces BQA with QA_PIXEL. To decode QA_PIXEL in Sentinel Hub, you can use the decodeL8C2Qa function.
You can also check out this EO Browser example showcasing the decoder used in the Evalscript: EO Browser Share Link. The script used can be found here.