==============================================================================
DATE:  01-April-1998
DOY: 091
OPERATIONS ENGINEER(S): R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  02-April-1998
DOY: 092
OPERATIONS ENGINEER(S): R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS:
==============================================================================
DATE:  03-April-1998
DOY: 093
OPERATIONS ENGINEER(S): C. Haskell/R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  04-April-1998
DOY: 094
OPERATIONS ENGINEER(S): C. Haskell/W. Hammond
SCIENTIST: S. White
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Changed the FITS disk to /cdsfits19
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  05-April-1998
DOY: 095
OPERATIONS ENGINEER(S): C. Haskell/E. Donaldson
SCIENTIST: S. White
CDS INSTRUMENT: Watchdog error occurred at 10:56 UT.  LOBT was sent at 
 12:44 UT, and science resumed at 15:00 UT.  During the recovery, the 
 GIS software patch required reloading.  CDS was nominal after the
 recovery.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS:
==============================================================================
DATE:  06-April-1998
DOY: 096
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: S. White
CDS INSTRUMENT: 
  A parity error was detected in the primary processor memory space.  Since 
  the error occured in a safe location, no reboot was necessary. 
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  07-April-1998
DOY: 097
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: S. White
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  08-April-1998
DOY: 098
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: S. White
CDS INSTRUMENT: 
  A parity error was detected in the primary processor memory space.  Since 
  the error occured in a safe location, no reboot was necessary. 
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  09-April-1998
DOY: 099
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: S. White
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  10-April-1998
DOY: 100
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: S. White
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: 
  A software update was performed.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  11-April-1998
DOY: 101
OPERATIONS ENGINEER(S): C. Haskell
SCIENTIST: C. Haskell
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  12-April-1998
DOY: 102
OPERATIONS ENGINEER(S): R. Yurow
SCIENTIST: C. Haskell 
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  13-April-1998
DOY: 103
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: C. Haskell 
CDS INSTRUMENT: 
  A parity error was detected in the primary processor memory space.  Since 
  the parity error was in an unsafe location, it was decided to reboot the
  instrument.  The science plan was halted at 20:00 UT and the reboot was 
  completed at 21:07 UT.  However, the new sceince plan could not be loaded
  before commanding was lost at 21:10 UT.  Therefore, the new science plan
  was loaded at 23:42 after commanding was regained.  
  A second parity error was detected in the secondary (science) processor
  memory space.  This parity error was cleared as part of the instrument 
  reboot. 
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  14-April-1998
DOY: 104
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: C. Haskell 
CDS INSTRUMENT: 
  CDS was rebooted at 19:27 UT in order to correct a GIS anomaly.  The 
  science plan was restarted at 21:10 and the GIS appears to be nominal 
  after the reboot.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  15-April-1998
DOY: 105
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: C. Haskell 
CDS INSTRUMENT: 
  A parity error was detected in the secondary (science) processor memory 
  space.  The secondary processor was rebooted at 19:13 UT.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  16-April-1998
DOY: 106
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: C. Haskell 
CDS INSTRUMENT: 
  A WATCHDOG error occured at 03:16 UT.  The instrument reboot was completed
  at 5:03 UT and the science plan was resumed at 5:40 UT.  CDS is nominal
  after the reboot.
CDS GROUND SYSTEM: 
  The following studies were imported to the EOF:
	ar_mon_39.def  
	coho33_4.def   
	cole4w_40.def  
	stat33w_5.def  
	stat33w_6.def 
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  17-April-1998
DOY: 107
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: C. Haskell
CDS INSTRUMENT: 
  Doors were closed at 15:01 UT for spacecraft maneuvers.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Close Doors, Science Operations.
COMMENTS: 
==============================================================================
DATE:  18-April-1998
DOY: 108
OPERATIONS ENGINEER(S): C. Haskell
SCIENTIST: A. Fludra
CDS INSTRUMENT: 
  A lubrication study was performed at 12:00 UT.
  Doors were opened at 20:12 UT.
  A SEU in the secondary (science) processor memory space caused the secondary
  processor to fail sometime during the day.  As a result, no science data 
  was collected.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Open Doors, Lubrication Study, Science Operations.
COMMENTS: 
==============================================================================
DATE:  19-April-1998
DOY: 109
OPERATIONS ENGINEER(S): C. Haskell
SCIENTIST: A. Fludra
CDS INSTRUMENT: 
  A WATCHDOG error occured at 09:15 UT.  The probable cause of this error
  was a communication deadlock between the primary processor and the secondary
  (science) processor.  It is theorized the seconary processor had failed
  on DOY 108 after due to an SEU.  The instrument reboot was completed
  at 14:20 UT and the science plan was resumed at 15:30 UT.  CDS is nominal
  after the reboot.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  20-April-1998
DOY: 110
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: Due to a massive CME on the southwest limb, a proton 
 storm has encircled the satellite.  This event is reminiscent of the
 one observed on November 6, 1997.  Observations will continue with ==============================================================================
DATE:  21-April-1998
DOY: 111
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: 
  During the telemetry submode transition at 20:00 UT, a process deadlock 
  occured on CDS and the instrument stoped sending science packets.  CDS
  was restarted  at 20:31 UT and the recovery procedures were completed at
  23:36 UT. The science plan resumed at 00:15 UT on DOY 112.  Prior to this
  anomally, a parity error was detected on the primary processor.  The parity
  error was cleared during the reboot.
  The high voltages on each of the GIS detectors was set to 0 to preserve
  the detectors during the proton storm.    
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  23-April-1998
DOY: 113
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: 
  A Setup Register A Failure system error was detected on the NIS.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  24-April-1998
DOY: 114
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: A. Fludra
CDS INSTRUMENT: 
  One run of the flat field calibration study was performed at 16:56 UT.
  A telemetry submode switch at 19:05 UT caused CDS to cease responding 
  commands and sending telemetry.  CDS was rebooted at 21:13 UT and the 
  science planned resumed at 00:00 UT on DOY 115
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  25-April-1998
DOY: 115
OPERATIONS ENGINEER(S): E. Donaldson/W. Hammond
SCIENTIST: P. Young
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  26-April-1998
DOY: 116
OPERATIONS ENGINEER(S): E. Donaldson/W. Hammond
SCIENTIST: P. Young
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS:
==============================================================================
DATE:  27-April-1998
DOY: 117
OPERATIONS ENGINEER(S): C. Haskell/R. Yurow
SCIENTIST: P. Young
CDS INSTRUMENT: Secondary and Primary SEUs were recorded.  The primary
 was in a safe location.  The secondary was rebooted at 18:38 UT.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS:
==============================================================================
DATE:  28-April-1998
DOY: 118
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: P. Young
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: 
==============================================================================
DATE:  29-April-1998
DOY: 119
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: P. Young
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS: Post flare observations were conducted from 17:41 UT onward.
==============================================================================
DATE:  30-April-1998
DOY: 120
OPERATIONS ENGINEER(S): C. Haskell / R. Yurow
SCIENTIST: P. Young
CDS INSTRUMENT: Nominal.
CDS GROUND SYSTEM: Nominal.
DAY PLAN: Science Operations.
COMMENTS:
==============================================================================