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CYGNSS Anomalous Sampling PeriodsNote: all times listed are in UTCGain change details: https://docs.google.com/spreadsheets/d/1Cjkf-DyydE1dwXlwDhK_mwnXe5vrnnekdqpobkFcuz4/edit?usp=sharing
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Start DateEnd Date (inclusive)Samples AffectedNotes
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2017-03-18 (start of mission)2017-04-30All samples due to high calibration uncertainty in early engineering commissioning.
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2017-09-202017-11-30All FM01 samples due to anomaly event with receiver
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2017-11-182017-11-22All FM05 samples due to anomaly event with receiver
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2018-01-312018-02-04All FM01 samples due to anomaly event with receiver
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2018-02-272018-03-02All FM04 samples due to anomaly event with receiver
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2018-03-032018-03-04All FM02 samples due to anomaly event with receiver
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2018-03-142019-03-15All FM02 samples due to anomaly event with receiver
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2018-04-132018-04-17All samples using GPS block IIF and IIR-M. US Governement was
performing tests with the "flex power" mode.
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2018-05-182018-05-26All FM04 samples due to anomaly event with receiver
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2018-05-252018-06-01All FM08 samples due to anomaly event with receiver
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2018-09-25 16:40:002018-09-27 16:22:00All FM02 samples due to yawing 90 degrees
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2018-11-15 19:00:002018-11-17 20:00:00All FM03 samples due to high altitude DDM test
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2018-11-27 18:28:302018-11-28 18:31:00All FM04 samples due to 2Hz sampling test without ENG_PASS syncing
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2018-12-172018-12-19All FM07 samples due to anomaly event with receiver
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2019-03-082019-03-12All FM08 samples due to anomaly event with receiver
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2019-06-20 15:00:002019-06-21 10:15:00Flex power started subsequently for all healthy Block IIR-M and IIF satellites. C/N0 of the P(Y)-code tracking increased by roughly 10 dB for all healthy Block IIR-M and IIF satellites whereas C/N0 of the C/A-code decreased by about 2-3 dB for the healthy IIR-M satellites only.v3.0 algorithm handles this event so these
samples are not fatally flagged in the v3.0
products
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2019-06-21 13:16:222019-06-22 03:30:32All FM02 samples due to 2Hz sampling test without ENG_PASS syncing
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2019-07-14 23:00:002019-07-31 17:00:00All FM02 samples due to anomaly event with receiver
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2019-10-262019-11-06All FM05 samples due to anomaly event with receiver
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2020-01-302020-02-03All FM02 samples due to anomaly event with receiver
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2020-04-22 12:00:002020-04-27All FM01 samples due to anomaly event with receiver
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2020-05-102020-05-27All FM08 samples due to anomaly event with receiver
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2020-07-112020-07-14All FM06 samples due to anomaly event with receiver
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2020-08-232020-08-25All FM07 samples due to anomaly event with receiver
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2020-08-192020-08-26All FM03 samples due to anomaly event with receiver
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2020-12-08 01:00:002020-12-09 19:00:00All FM04 samples due to flight software upgrade
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2020-12-152020-12-15All FM03 port samples due to antenna gain testingNo v2.1 data for FM01 was producded during this period.
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2021-01-202021-01-20All FM01 starboard samples due to antenna gain testingNo v2.1 data for FM01 was producded during this period.
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2021-01-212021-01-21All FM02 port samples due to antenna gain testingNo v2.1 data for FM01 was producded during this period.
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2021-01-222021-01-22All FM03 port samples due to antenna gain testingNo v2.1 data for FM01 was producded during this period.
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2021-01-232021-01-23All FM06 starboard samples due to antenna gain testingNo v2.1 data for FM01 was producded during this period.
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2021-02-262021-03-05All FM05 samples due to anomaly event with receiver
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2021-03-16 19:002021-03-30 4:40:00FM01 starboard samples due to gain change testingNo v2.1 data for FM01 was producded during this period.
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2021-03-202021-03-22All FM07 samples due to anomaly event with receiver
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2021-06-092021-06-11All FM05 samples due to anomaly event with receiver
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2021-06-232021-06-29All FM04 samples due to anomaly event with receiver
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2021-10-052021-10-08All FM05 samples due to anomaly event with receiver
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2021-12-032021-12-09All FM07 samples due to anomaly event with receiver
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2022-03-132022-03-17All FM08 samples due to anomaly event with receiver
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2022-03-302022-04-03All FM08 samples due to anomaly event with receiver
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2022-04-202022-04-26All FM06 samples due to anomaly event with receiver
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2022-05-142022-05-16All FM06 samples due to anomaly event with receiver
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2022-06-112022-06-14All FM06 samples due to anomaly event with receiver
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2022-07-262022-07-27All FM06 samples due to gain change testing
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2022-09-042022-09-07All FM05 samples due to anomaly event with receiver
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2023-03-052023-03-08All FM03 samples due to anomaly event with receiver
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2023-03-29 00:00:002023-03-29 21:46:44All FM01 samples due to gain change testing
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2023-03-29 23:26:412023-03-30 11:45:00All FM01 samples due to gain change testing
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2023-05-04 00:00:002023-05-06 00:00:30All FM01 samples due to gain change testing
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2023-10-072023-10-08All FM03 samples. The spacecraft was in sunpoint mode, but a few DDMs were taken as a cal/val exercise.
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2024-01-172024-01-20All FM04 samples due to anomaly event with receiver
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2024-04-192024-04-22All FM03 samples due to anomaly event with receiver
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