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Astroquery is a convenient, programmatic way to filter all of MAST holdings and retrieve the data files you would likewant.
Using it effectively means understanding how the TESS data is represented in the MAST Observations database (also known as the Common Archive Observation Model, CAOM). All data at MAST is split into observations. Each of those observations have several data files associated with them. Once you have the observation ID you will be able to then request a list of data products. Thus most searches for MAST data through astroquery Astroquery require two filters, one on the observations level and one for the data products. These tables provide useful information about those fields you might use to do those queries. Please see the CAOM documentationfield list and data products fields for the full list of filters.
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| Filter | Field Name | How it is used for TESS |
|---|---|---|
| Observation ID | obs_id | FFIs: tess-s0001-4-2, where the 0001 is the sector, the 4 is the camera and 2 is the CCD Postage stamp: the name is based on the file name and encodes the TIC ID and Sector Information. |
| Proposal ID | proposal_id | The Guest Investigator IDs are provided in this column. They are stored in a string with underscores separating them. e.g. G011183_G011132_G011048_G011250 |
| Sector | sequence_number | Sector number is stored in this field as an integer. |
| Data Product Type | dataproduct_type | FFI: "image" postage-stamp: "time seriestimeseries" |
| Target Name | target_name | postage-stamp: The integer TIC ID is given. FFI: "TESS-FFI" is always the value. |
Data Products Filter
| Filter | Field Name | How it is used for TESS Data |
|---|---|---|
| Minimum Recommended Product | mrp_only | When set to True you only get the most common data products. They are: postage-stamp: light curve files and target pixel files. FFI: There are no MRPs. |
| Product Type | product_type | postage-stamp: "timeseries" FFI: "image" |
| Description | description | Choices are":
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| Data File Type | productSubGroupDescription |
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