Subject: MissionNotice MN022479 Suomi-NPP CrIS Autonomous Reboot
Description_Title: Suomi-NPP CrIS Autonomous Reboot
MN_ID: MN022479
Date_Time: 2014-09-02 15:27:10
Mission_Notice_Text: Mission Notice Status: New
Product(s) or Data Impacted: CrIS sensor data
Date/Time of Initial Impact: September 2, 2014 05:40:54 UTC
Date/Time of Expected End: September 2, 2014 14:08:41 UTC
Length of Outage: Approximately 8 hours and 29 minutes
Details/Specifics of Change:
At 05:40:54 UTC the CrIS instrument anomalously stopped science data production and communication with the 1394 bus. Autonomous recovery switched both the VIIRS and CrIS instruments to bus A at 05:41:16 UTC. CrIS remained unresponsive and experienced an autonomous reboot at 05:41:25 UTC.
As of 14:08:41 UTC CrIS is producing science data. Some calibration may be impacted as temperatures stabilize and initial calibrations take place. Additional 1394 bus recovery commanding is planned for this afternoon and is not expected to impact data collection. As of this time the root cause is still undetermined.