I downloaded scenes from both Landsat 7 & 8 reflectance. However, QA bands are included in Landsat 8 but not 7. I selected "all data" when downloading. Anyone has a clue where the QA bands are for Landsat 7 (further more, Landsat 4-5?)

QA for reflectance, USGS This link says QA bands are available for all reflectance bands. Just couldn't find them.

  • Downloaded from where? I don't see an "all data" option on EarthExplorer or ESPA. – user2856 Nov 1 '16 at 0:33

I just downloaded a Landsat 7 Surface Reflectance scene from USGS EarthExplorer. It contains QA bands.

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If you are ordering from the USGS ESPA, CFMask should be included by default in the Surface Reflectance product, but can be ordered separately (tick the CFMask box).

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If you download Collection-1 Landsat Images, both Landsat 7 and Landsat 8 Higher Level Data Products will come with pixel QA band. Otherwise you need to download the CFMask which has the same information but calculated with a different algorithm.

For more information you can check https://landsat.usgs.gov/landsat-surface-reflectance-quality-assessment website.

Please be informed that its announced on the ESPA site that starting from June 2nd CFMask wont be processed for Landsat Collection 1 Higher-Level data products.

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