Landsat Missions

What files will be provided with a Landsat scene?

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Question:

What files will be provided with a Landsat scene?

Answer:

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.

Collection 1 Level-1 Data Product Contents

Collection 1 files included with Level-1 data product download
*Landsat 1-5 MSS Collection 1 data product content information will be added when MSS scenes are processed to Collection 1.

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 and Landsat 7 ETM+ 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 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.

Pre-Collection Level-1 Data Product Contents

Pre-Collection files included in Level-1 product download

Spectral Band Files: Landsat Pre-Collection Level-1 products from all sensors contain individual spectral band files in GeoTIFF format.

Quality Band File: A quality band in GeoTIFF format is only included with the Landsat 8 Pre-Collection Level-1 products.

Metadata File and Work Order File: All Landsat 1-5 MSS, Landsat 7 ETM+, and Landsat 8 OLI/TIRS Pre-Collection Level-1 products include a metadata file (MTL.txt). Landsat 4-5 TM scenes processed through the Level-1 Product Generation System (LPGS) also include an MTL.txt file. Landsat 4-5 TM scenes processed through the National Land Archive Production System (NLAPS) will include a work order file (WO.txt). The work order file contains the metadata information for these NLAPS scenes. A list of Landsat 4-5 scene processed through NLAPS can be found here. For information on the differences between LPGS and NLAPS, see this page.

Ground Control Points (GCP) File: Landsat 1-5 MSS, Landsat 4-5 TM, and Landsat 7 ETM+ 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 1-5 MSS and Landsat 4-5 TM 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.

Due to the additional spectral bands and improved 16-bit data product, Landsat 8 file sizes are larger than Landsat 1-7. For a comparison of Landsat Level-1 product file sizes, see this page. Landsat Level-1 data products are delivered as .tar.gz compressed files.

Technical details relating to format descriptions, file names, and other information are available on the Landsat Project Documentation Web page.

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