Each mission hosted by MAST, and often each instrument within a mission, produces data products with a variety of semantic content. These types are encoded into the suffix of the data product file name; often the file suffix appears after a final underscore character, and just before the period and file type (e.g., <observation-id>_<suffix>.fits). Each type is listed in the table below.

Semantic Types Table

Browse the sortable table; or type one or more of:

• the MAST mission designation (often an acronym)
• the instrument acronym 
• the file suffix

into the search box to find the description of the semantic content that matches the file suffix of interest. Note: some missions (e.g., Kepler, TESS) have only one science instrument, so the instrument field is left blank in the table.

For Further Reading...

• Portal User Guide