Mission Overview

TESS Lightcurves From The MIT Quick-Look Pipeline ("QLP")

 

Primary Investigator: Chelsea X. Huang

HLSP Authors: 

Sectors 1-26: Chelsea X. Huang, Andrew Vanderburg, András Pál, Lizhou Sha, Liang Yu, Willie Fong, Michael Fausnaugh, Avi Shporer, Natalia Guerrero, Roland Vanderspek, George Ricker

Sectors 27 onwards: Michelle Kunimoto, Willie Fong, Evan Tey, Avi Shporer, Natalia Guerrero, Katharine Hesse, Michael Fausnaugh, Roland Vanderspek, George Ricker

Released: 2020-11-12

Updated: 2021-10-27

Primary Reference(s): Huang et al. 2020a, Huang et al. 2020bKunimoto et al. 2021

DOI: 10.17909/t9-r086-e880

Citations: See ADS Statistics

Read Me | Data Product Description

 
Image showing footprints of Sectors 1-26.
Footprints of Sectors 1-26.

Sky coverage for TESS QLP Sectors 1-26.

Image showing coverage of Sectors 27-39.
Footprints of Sectors 27-39.

Sky coverage for TESS QLP Sectors 27-39.

Overview

The Transiting Exoplanet Survey Satellite (TESS) is the first high-precision full-sky photometry survey in space. The MIT QLP team produces light curves from a magnitude limited (TESS magnitude < 13.5) set of stars and other stationary luminous objects from the TESS Full Frame Images (FFIs). The photometric precision roughly follows the theoretical predictions pre-launch. The data reduction process is described in the primary references (Huang et al. 2020a and Huang et al. 2020b). Additional pages in the full QLP data validation report provide additional metrics for decision-making. These plots are useful for diagnosing whether the source of transit-like variability is on target or from a nearby blended source, which is particularly important for FFI data.  Some of these data validation pages are available on the MIT TOI Portal.

The first data release consists of QLP light curves for targets in Sectors 1-26. These data products cover the two-year TESS Primary Mission and include 14,773,977 and 9,602,103 individual light curve segments in the Southern and Northern hemispheres, respectively. The second data release consists of 10-minute cadence light curves for 9.1 million stars from the first year of the Extended Mission (Sectors 27-39). Future deliveries of Extended Mission light curve data for Sectors 40 and onwards are expected to be released starting in late 2021.

For more details on QLP, please see the QLP webpage at https://tess.mit.edu/qlp/.

Acknowledgements

Please include the following acknowledgement in published material that makes use of QLP-produced High Level Science Products:

"We acknowledge the use of TESS High Level Science Products (HLSP) produced by the Quick-Look Pipeline (QLP) at the TESS Science Office at MIT, which are publicly available from the Mikulski Archive for Space Telescopes (MAST). Funding for the TESS mission is provided by NASA's Science Mission directorate."

The QLP team encourages users of the QLP Extended Mission HLSP (QLP light curves starting with Sector 27), which are made available on a timely and voluntary basis to the broader astronomical community, to invite one QLP team member for co-authorship and consultation on data analysis. Note that this is not a requirement for using QLP HLSP files or publishing results based on them. Please contact Michelle Kunimoto (mkuni@mit.edu) for a recommendation of which member to include if you decide to invite a QLP member to be a co-author on your QLP-based paper.

Data Products

For details on the file format and contents of the light curve files, see the Data Product Description document.

The light curve files have this data file naming convention:

hlsp_qlp_tess_ffi_<sector>-<tid>_tess_v01_llc.<exten>

where:

  • <sector> = The Sector represented as a 4-digit, zero-padded string, preceded by an 's', e.g., 's0026' for Sector 26.
  • <tid> = The full, 16-digit, zeo-padded TIC ID.
  • <exten> = The light curve data type, either "fits" or "txt".

The light curve tar bundles and sha256 checksum files have this file naming convention:

hlsp_qlp_tess_ffi_<sector>_tess_v01_bulk-dl.<exten>

where:

  • <sector> = The Sector represented as a 4-digit, zero-padded string, preceded by an 's', e.g., 's0026' for Sector 26.
  • <exten> = The data file type, either "tar.gz" or "sha256".

Data file types:

_llc.fits | _llc.txt QLP light curve.
_bulk-dl.tar.gz All QLP light curves for a given Sector.
_bulk-dl.sha256 SHA256 checksum to verify successful download of the tar.gz file.

Data Access

Sector Availability

Each Sector will have tar files available that contain every light curve (in both FITS and ASCII text format).  When available, that Sector's "Bundle" link will become active.  NOTE: Each bundle is large, between 20-200 GB for Sectors 1-26, larger for the Extended Mission Sectors that will begin with Sector 27.  In addition to the light curve bundles, the data will also be available in the MAST Portal and through the MAST APIs like astroquery.mast.  NOTE: Currently the interactive plot tool in the Portal does not work for QLP HLSP light curves.

Target List files are provided that contain the TIC ID, R.A. (J2000, deg), and Dec.(J2000, deg) for targets that have QLP light curves.  For those who have very large target lists, it is recommended you download these .csv files first to cross-match with your list of targets BEFORE you query MAST to search for and download QLP data products.

Year 1 (Sectors 1-13) Year 2 (Sectors 14-26) Year 3 (Sectors 27-39)
Sector 01: Bundle | Checksum | Target List Sector 14: Bundle | Checksum | Target List Sector 27: Bundle | Checksum | Target List
Sector 02: Bundle | Checksum | Target List Sector 15: Bundle | Checksum | Target List

Sector 28: Bundle | Checksum | Target List

Sector 03: Bundle | Checksum | Target List Sector 16: Bundle | Checksum | Target List

Sector 29: Bundle | Checksum | Target List

Sector 04: Bundle | Checksum | Target List Sector 17: Bundle | Checksum | Target List

Sector 30: Bundle | Checksum | Target List

Sector 05: Bundle | Checksum | Target List Sector 18: Bundle | Checksum | Target List

Sector 31: Bundle | Checksum | Target List

Sector 06: Bundle | Checksum | Target List Sector 19: Bundle | Checksum | Target List

Sector 32: Bundle | Checksum | Target List

Sector 07: Bundle | Checksum | Target List Sector 20: Bundle | Checksum | Target List

Sector 33: Bundle | Checksum | Target List

Sector 08: Bundle | Checksum | Target List Sector 21: Bundle | Checksum | Target List

Sector 34: Bundle | Checksum | Target List

Sector 09: Bundle | Checksum | Target List Sector 22: Bundle | Checksum | Target List

Sector 35: Bundle | Checksum | Target List

Sector 10: Bundle | Checksum | Target List Sector 23: Bundle | Checksum | Target List

Sector 36: Bundle | Checksum | Target List

Sector 11: Bundle | Checksum | Target List Sector 24: Bundle | Checksum | Target List

Sector 37: Bundle | Checksum | Target List

Sector 12: Bundle | Checksum | Target List Sector 25: Bundle | Checksum | Target List

Sector 38: Bundle | Checksum | Target List

Sector 13: Bundle | Checksum | Target List Sector 26: Bundle | Checksum | Target List

Sector 39: Bundle | Checksum | Target List

 

Link to the MAST Portal Webpage

MAST Portal

A web-based interface for cross-mission searches of data at MAST or the Virtual Observatory. Download QLP light curves for a few targets.
MAST Astroquery

MAST Astroquery

Search for, and retrieve, QLP data products programmatically based on a list of coordinates or target names.

Citations

Please remember to cite the appropriate paper(s) below and the DOI if you use these data in a published work. 

Note: These HLSP data products are licensed for use under CC BY 4.0.

References