Landsat Collection 1 Level-1 data products include more files than Pre-Collection Level-1 products. The tables below, along with descriptions of the files included, detail the differences between Collection 1 and Pre-Collection Level-1 data product contents.
Spectral Band Files: Landsat Collection 1 products from all sensors contain individual spectral band files in GeoTIFF format.
Quality Band File: A quality band in GeoTIFF format is included with all Landsat 4-5 TM, Landsat 7 ETM+, and Landsat 8 OLI/TIRS Collection 1 Level-1 products.
Metadata File: All Landsat 4-5 TM, Landsat 7 ETM+, and Landsat 8 OLI/TIRS Collection 1 Level-1 products include a metadata file in .txt file format.
Angle Coefficients File: All Landsat 4-5 TM, Landsat 7 ETM+, and Landsat 8 OLI/TIRS Collection 1 Level-1 products include an Angle Coefficent file which provides sensor viewing angle model coefficients which allow users to create angle bands and compute solar and sensor viewing angles on a per-pixel basis.
Ground Control Points (GCP) File: Landsat 4-5 TM Level-1TP and Landsat 7 ETM+ Level-1TP scenes include a file containing the Ground Control Points used during image processing.
Gap Mask Files: Landsat 7 ETM+ scenes acquired from May 2003 to present include Gap Mask files for each band, to help identify the location of all pixels affected by the original data gaps caused by the Scan Line Corrector (SLC) failure in May 2003.
Verify Image File and Verify Image Report File: Landsat 4-5 TM Level-1TP scenes include a Verify Image File (VER.jpg), which displays a grid of verification points in various colors that represent the accuracy of geometric correction. Cross-correlation techniques based on the GLS 2000 dataset are used as reference. Used with the Geometric Verify Report (VER.txt), the accuracy of the scenes can be determined.
README File: The README file contains a summary and brief description of the Level-1 product contents and naming conventions for the files included.
Technical details relating to format descriptions, file names, and other information are available on the Landsat Project Documentation Web page.