ACE Weekly 02/14/2012 - 02/20/2012 All ACE spacecraft subsystems are performing as expected. ======================================================================== Orbit/Attitude: No maneuvers were completed this week. The next attitude maneuver is scheduled for Tuesday 02/21/2012. ======================================================================= OCRs: DOY 047 (02/16/2012) 2125-2135z SIS-046 9 commands Optimize the performance of SIS instrument after the recent SEP event and subsequent commanding to disable some Matrix detector strips and raise their thresholds. Disable Matrix detector strips # 46 and 48 on M1B GND side. Raise the threshold of strips # 30 and 33 on M1A GND side, and 48 on M1A HV side. Increase the default software threshold for Matrix strips on Telescope B from 3 to 4 channels. ======================================================================== Activities: Data Capture: 100% DOY 043-050 2012 The automated account for accessing the new FDF server has not been working since 2/6/2012 (2 weeks). ======================================================================== Anomalies: DOY 045 02/14/2012 S-ACE-0640 G12-0002 ace_gri process dead The "ace_gri" tool updates the Ground Reference Image to match the spacecraft's onboard command bins. The ace_gri tool failed to update the GRI after the command to disable the SSR failover autonomy bin had been sent. It is believed that the ace_gri linux process died before the process was complete. The CPU usage from the ITOS event windows had been ~90% since 2/1/2012. After trouble-shooting the ace_gri problem, the ITOS event database was cleared of January 2012 event messages. The ITOS event windows went back to minimal CPU usage. It is unknown what had happened to the ITOS event database that caused the CPU usage to be so high, or why clearing the January 2012 event messages fixed the problem. But the reduced CPU usage is expected reduce the likelihood of linux processes dying. IMPACT: A warning was generated when the Ground Reference Image did not match the spacecraft onboard command bins.