TESS Below we provide a brief summary of the DRN for each Sector in TESS Cycle 3.
Sector 38
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 55 | 83 84 |
2021-04-29 - 2021-05-11 2021-05-12 - 2021-05-26 |
796604 - 805592 806284 - 815829 |
0.96 | 25.74 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Camera 4 alone was used for guiding in orbit 83 of Sector 38. Both Cameras 1 and 4 were used for guiding in orbit 84. | ||||||
| Scattered light: | In Sector 38, there is scattered light for most of both orbits | ||||||
| Big update: | The TESS Input Catalog was updated to v8.2. This new TIC identifies some newly discovered ARTIFACT and DUPLICATE sources that were not flagged in v8.0/8.1. For a description of these anomalies please read Section 1.1 of the [DRN]( https://archive.stsci.edu/missions/tess/doc/tess_drn/tess_sector_38_drn55_v02.pdf) in addition to [supplemental material](https://outerspace.stsci.edu/display/TESS/TIC+v8+and+CTL+v8.xx+Data+Release+Notes). | ||||||
Sector 37
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 54 | 81 82 |
2021-04-02 - 2021-04-14 2021-04-15 - 2021-04-28 |
777441 - 785934 786793 - 795689 |
1.19 | 24.15 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Both Cameras 1 and 4 were used for guiding in orbits 81 and 82 of Sector 37. | ||||||
| Scattered light: | In Sector 37, there is scattered light at the beginning of both orbits | ||||||
Sector 36
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 52 | 79 80 |
2021-03-07 - 2021-03-19 2021-03-20 - 2021-04-01 |
758479 - 767087 767759 - 776544 |
0.93 | 24.16 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Camera 4 alone was used for guiding in orbits 79 and 80 of Sector 36. | ||||||
| Scattered light: | In Sector 36, there is scattered light at the beginning of both orbits. | ||||||
Sector 35
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 51 | 77 78 |
2021-02-09 - 2021-02-21 2021-02-23 - 2021-03-06 |
739821 - 748579 749609 - 757817 |
1.43 | 19.86 | 1 1 |
list | Issue | Description |
| Instrument issues: | The spacecraft passed through the shadow of the Earth at the end of orbit 77. During this time, the instrument was turned off and no data were collected for 6.26 hours between TJD 2266.1091 and 2266.3700. The thermal state of the spacecraft changed during this time, and trends in the raw photometry and target positions are apparent after data collection resumed. | ||||||
| Spacecraft pointing: | Approximately 40 minutes after the start of orbit 78, the spacecraft dropped out of Fine Pointing mode. For the next 3.44 days—between TJD 2268.5758 and 2272.0133—the spacecraft was in Coarse Pointing mode: in this mode, the spacecraft attitude drifts by about 1.5 pixels on timescales of 1 hour. Data continued to be collected while in Coarse Pointing: these data are flagged and removed from the PDCSAP FLUX light curves and transiting planet search. The FFIs are also flagged for Coarse Pointing. See the DRN Section 4.1 for more information about this.
Camera 4 alone was used for guiding in orbit 77 of Sector 35. Camera 1 and Camera 4 were both used for guiding in orbit 78. |
||||||
| Scattered light: | In Sector 35, there is scattered light at the beginning of both orbits. For orbit 77, the scattered light briefly saturates Camera 1. | ||||||
Sector 34
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 50 | 75 76 |
2021-01-14 - 2021-01-26 2021-01-27 - 2021-02-08 |
720929 - 729684 730459 - 739159 |
1.08 | 24.24 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Camera 1 and Camera 4 were both used for guiding in orbit 75 of Sector 34. Camera 4 alone was used for guiding in orbit 76. | ||||||
Sector 33
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 49 | 73 74 |
2020-12-18 -- 2020-12-30 2020-12-31 -- 2021-01-13 |
701476 -- 710214 711341 -- 7720084 |
1.57 | 24.23 | 1 1 |
list | Issue | Description |
| Scattered light: | In Sector 33, the Moon introduces a strong glint in Camera 1 at the end of orbit 73. | ||||||
| Big update: |
As of Sector 30, co-trending basis vector (CBV) files only include the first eight principal components for the Single Scale co-trending mode. As a reminder, the pipeline only uses the first eight CBVs for co-trending, because subsequent CBVs are usually dominated by stochastic noise. When using CBVs beyond 8, users should check for excess noise being introduced into the detrended light curve In Sectors 30–33, the values for CBVs 9–16 are set to 0. |
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Sector 32
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 48 | 71 72 |
2020-11-20 -- 2020-12-02 2020-12-03 -- 2020-12-16 |
681670 -- 690109 690829 -- 700399 |
1.0 | 25.01 | 1 1 |
list | Issue | Description |
| Star tracker anomaly: | UTC 2020-11-16 10:37, instrument turned off and collection of data for orbit 71 started 29 hrs later than scheduled. Normal operation started 2020-11-20-17-13-00 UTC. | ||||||
| Spacecraft pointing: | Camera 4 alone was used for guiding in orbit 72. | ||||||
| Scattered light: | In Sector 32, the Moon introduces a strong glint in Camera 1 at the end of orbit 71. | ||||||
Sector 31
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 47 | 69 70 |
2020-10-22 -- 2020-11-03 2020-11-05 -- 2020-11-16 |
660279 -- 669599 670609 -- 678592 |
1.4 | 24.03 | 1 1 |
list | Issue | Description |
| Star tracker anomaly: | At UTC 2020-11-16 10:37, there was a star tracker anomaly which led to the instrument being turned off. As a result, the data collection period in orbit 70 ended 2.08 days earlier than scheduled. The cameras were turned on and returned to normal operations on 2020-11-20, at the beginning of Sector 32. | ||||||
| Spacecraft pointing: | Camera 1 suffered from strong scattered light signals at the end of orbit 69 and orbit 70, and so Camera 4 alone was used for guiding during this sector. | ||||||
| Scattered light: | In Sector 31, the Moon introduces a strong glint in Camera 1 at the end of orbit 69, followed by scattered light signals in all cameras caused by the Earth. Due to the star tracker anomaly, no data were taken during periods of high scattered light in orbit 70. | ||||||
Sector 30
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 45 | 67 68 |
2020-09-23 -- 2020-10-06 2020-10-07 -- 2020-10-20 |
639666 -- 649212 649979 -- 659352 |
1.07 | 26.28 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Camera 1 suffered from strong scattered light signals at the end of orbit 67 and orbit 68, and so Camera 4 alone was used for guiding during this sector. | ||||||
| Scattered light: | In Sector 30, the Moon introduces a strong glint in Camera 1 at the end of orbit 67, and the Earth introduces scattered light signals in all cameras at the end of both orbits. | ||||||
Sector 29
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 43 | 65 66 |
2020-08-26 -- 2020-09-08 2020-09-09 -- 2020-09-21 |
619761 -- 629222 629904 -- 638624 |
0.95 | 25.25 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Camera 1 suffered from strong scattered light signals at the end of orbit 65 and orbit 66, and so Camera 4 alone was used for guiding during this sector. | ||||||
| Scattered light: | In Sector 29, the Moon introduces a strong glint in Camera 1 at the end of orbit 65, and the Earth introduces scattered light signals in all cameras at the end of both orbits. | ||||||
Sector 28
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 41 | 63 64 |
2020-07-31 -- 2020-08-12 2020-08-13 -- 2020-08-25 |
600761 -- 609484 610341 -- 618942 |
1.19 | 24.06 | 1 1 |
list | Issue | Description |
| Scattered light: | In Sector 28, the Earth introduces scattered light signals at the end of both orbits. | ||||||
Sector 27
Information
| DRN | Orbits | Dates (UTC) Start - End |
Cadence # Start - End |
Data pause (days) |
Science data (days) | Momentum dumps | Problematic TIC ID's |
|---|---|---|---|---|---|---|---|
| 38 | 61 62 |
2020-07-05 -- 2020-07-17 2020-07-18 -- 2020-07-30 |
582349 -- 590884 591619 -- 599894 |
1.02 | 23.35 | 1 1 |
list | Issue | Description |
| Spacecraft pointing: | Year 3 is a re-observation of the southern ecliptic hemisphere, which will take place over 13 sectors. The pointing strategy is the same as for Year 1, except the locations of Sectors 27–39 are offset in ecliptic longitude with respect to Sectors 1–13. All sectors in Year 3 are planned for a spacecraft pointing of −54 degrees in ecliptic latitude. | ||||||
| Scattered light: | In Sector 27, the Earth is a significant source of scattered light throughout both orbits. | ||||||
Big Updates! This is the first data release for the extended mission |
FFI data is collected every 10 min, rather than 30. Selected pixel stamps are collected at a 20-sec cadence. Data products for the 20 second mode have the keyword "fast" in the file names. For 20-second data, only target pixel files, light curve files, collateral pixel files, and co-trending basis vectors (CBVs) were produced. As usual cosmic rays were mitigated in the 2-minute cadence data and 10-minute FFIs by an algorithm running on the instrument firmware - see DRN pg. 8, for more info. Note however, that in the new 20-second pixel data cosmic rays were identified and removed in the pipeline, and that they can be restored in the pixel data and light curves if necessary. The background correction employed throughout the primary mission was updated for the extended mission. The new method provides improved results for fainter and crowded stars. The correction is applied only to 2-min and 20-sec data. A full explanation of this correction is on pg. 10 of the DRN For targets observed in both Year 1 and Year 3, Year 3 processing was done using TIC 8.1 while TIC 7 was used for Year 1 processing; this may result in different results for certain targets. Differences for some crowded and/or dim targets may also result from the background correction algorithm update (see below). Reprocessing of Year 1 data with TIC 8.1 and the latest codebase is underway at the SPOC, as of Fall 2020. The algorithm in the CAL module that propagates uncertainty from the 2D bias model was changed. This uncertainty is a static term and is no longer applied to the pixel data or subsequent processing in the pipeline. The algorithm in the PA module that estimates the sky background was changed. A scalar offset is now applied that forces the dimmest background-corrected pixels to values near zero, if those pixels were significantly negative. | ||||||