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OCO-2 and GOSAT/ACOS Data

warn_icon.gif IMPORTANT MESSAGE Sep 23, 2016    OCO-2 Post-anomaly Data Status   

The OCO-2 instrument experienced an anomaly that interrupted routine operations at 4:28 UTC on August 10, 2016 (Orbit 11212). The cause of the anomaly was resolved, and the instrument recovery process was initiated on August 14 by conducting a standard, week-long decontamination cycle.  The decontamination cycle was completed, and the instrument’s optical bench and detectors were at their nominal operating temperatures on 21 August (Orbit 11376). An initial analysis of the data indicated that, while the instrument was working nominally for science observations, its on-board calibration mechanism had not initialized properly, and was out of alignment, precluding the routine production and delivery of calibrated science data products.  The calibrator alignment issue was diagnosed and resolved on 20:34 UTC on September 15, 2016.  After validating the quality of the data, the standard version 7 (v7) forward streams for L1B and L2 data were reinitiated on September 20, 2016 (Orbit 11815). 

There will be a permanent data gap from August 10 (Orbit 11212) to August 21 (Orbit 11376) because no science observations were collected during that period.  The L1B and L2 science data collected between August 21 and September 20, while the calibrator was not aligned properly, will not be processed as part of the forward v7 data stream, but will be processed as part of the August and September retrospective products (v7r).  These data will be processed using a non-standard calibration product. Users should report any issues that they encounter with these data.

 

 

A mailing list is established for everyone interested in updates on a monthly basis. We will notify users if there is new documentation, important announcements about the dataset, etc. We encourage everyone who downloads OCO-2 data to sign up to the oco2_updates email list. To subscribe, send an email to sympa at list.jpl.nasa.gov with the subject:
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Known Data Issues

Start Orbit End Orbit Issue Impact Dates
0 485 Door closed/Warm Science data not created or invalid 7/2/14 - 8/4/14
486 504 Warm Science data invalid 8/4/14 - 8/5/14
557 640 Door closed Science data invalid 8/9/14 - 8/15/14
768 775 Maneuvers/Door closed No Science taken 8/23/14 - 8/24/14
878 918 Warm (decontamination) Science data invalid 8/31/14 - 9/3/14
1082 1084 Maneuvers/Door closed No Science taken 9/14/2014
1648 1648 Door closed Science data invalid 10/23/2014
1649 1685 Door closed/Warm (decontamination) Science data not created or invalid 10/23/14 - 10/26/14
1686 1721 Door closed Science data invalid 10/26/14 - 10/28/14
2371 2372 Maneuvers/Special calibration (Full-orbit dark) No Science taken 12/12/2014
2672 2672 Maneuvers/Door closed No Science taken 1/1/2015
2741 2777 Warm (decontamination) Science data not created or invalid 1/6/15 - 1/8/15
2821 2821 Poor telemetry quality Could not create L1B product 1/11/2015
2899 2993 Warm/decontamination/maneuver Science data not created or invalid 1/17/15 - 1/23/15
3010 3010 Special calibration (Full-orbit solar) No Science taken 1/24/2015
3079 3084 Ground station problems Science data missing one band 1/29/15 - 1/30/15
3228 3229 Ground station problems Science data missing 2/8/2015
3374 3374 Special calibration (Full-orbit solar) No Science taken 2/18/2015
3403 3403 Special calibration (Full-orbit Dark) No Science taken 2/20/2015
3738 3739 Maneuvers/Door closed No Science taken 3/15/15 - 3/16/15
3837 3838 Maneuvers/Door closed No Science taken 3/22/2015
3838 3838 Poor telemetry quality Could not create L1B product 3/25/2015
3898 3898 Special calibration (Full-orbit solar) No Science taken 3/26/2015
3997 3998 Maneuvers/Door closed No Science taken 4/2/2015
4203 4204 Maneuvers/Door closed No Science taken 4/16/15 - 4/17/15
4248 4248 Special calibration (Full-orbit solar) No Science taken 4/19/2015
4255 4503 Warm (decontamination), instrument safing Science data not created or invalid 4/20/2015 - 5/10/2015
4624 4625 Maneuvers/Door closed No Science taken 5/15/2015
4634 4634 Special calibration (Single-pixel mode) No Science taken 5/16/2015
4714 4714 Special calibration (Full-orbit solar) No Science taken 5/21/2015
4936 4936 Special calibration (Single-pixel mode) No Science taken 6/6/2015
5034 5034 Special calibration (Full-orbit Dark) No Science taken 6/12/2015
5165 5165 Special calibration (Full-orbit solar) No Science taken 6/21/2015
5646 5646 Special calibration (Full-orbit solar) No Science taken 7/24/2015
5729 5729 Maneuvers/Door closed No Science taken 7/30/2015
6244 6244 Special calibration (Full-orbit solar) No Science taken 9/4/15
6601 6732 Warm/decontamination/maneuver Science data not created or invalid 9/28/15-10/7/15
6884 6884 Special calibration (Full-orbit solar) No Science taken 10/17/2015
6986 6986 Special calibration (Full-orbit Dark) No Science taken 10/25/2015
7010 7059 Flight software testing No Science taken 10/27/15 - 10/29/15
7336 7337 Maneuvers No Science taken 11/18/2015
7389 7389 Maneuvers/Door closed No Science taken 11/21/2015
7447 7453 Ground station problems Science data lost 11/25/15
7666 7666 Maneuvers No Science taken 12/10/15
7670 7670 Special calibration (Full-orbit solar) No Science taken 12/10/15
7960 7961 Maneuvers No Science taken 12/30/15
8413 8413 Special calibration (Full-orbit solar) No Science taken 1/30/15
8587 8587 Special calibration (Full-orbit solar) No Science taken 2/11/16
8820 8820 Special calibration (Full-orbit solar) No Science taken 2/27/16
8994 8994 Maneuvers/Door closed No Science taken 3/10/16
9097 9097 Maneuvers/Door closed No Science taken 3/17/16
9228 9228 Special calibration (Full-orbit solar) No Science taken 3/26/16
9250 9350 Warm/decontamination Science data not created or invalid 3/28/2016 - 4/4/2016
9402 9402 Maneuvers/Door closed No Science taken 4/7/16
9475 9475 Maneuvers/Door closed No Science taken 4/12/16
9633 9633 Maneuvers/Door closed No Science taken 4/23/16
9840 9840 Special calibration (Full-orbit solar) No Science taken 5/7/16

 

 

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