STEREOA>Solar Terrestrial Relations Observatory Ahead of the Sun-Earth Line

The file contains state of health data from the IMPACT instrument on the STEREO Ahead spacecraft.

Plasma and Solar Wind
Housekeeping
Particles (space)
Magnetic Fields (space)

Bit 0 IDPU Power Warning, (1=Warning, RED; 0=OK)
Bit 1 SEP Power Warning, (1=Warning, YELLOW; 0=OK)
Bit 2 SWEA Power Warning, (1=warning, YELLOW; 0=OK)
Bit 3 PLASTIC Power Warning, (1=warning, YELLOW; 0=OK)
Bit 4 Thruster Warning, (1=warning, YELLOW; 0=OK)
Bit 5 Coarse Pointing, (1=Bad Pointing, YELLOW; 0=OK)
Bit 6 SWAVES Power Warning (1=warning, YELLOW; 0=OK)
 Bit 7 1553 Channel spacecraft status was received on, 1=A, 0=B

Bit 7 EEPROM Code Page 3 checksum status (1=bad, RED; 0=OK)
Bit 6 EEPROM Code Page 2 checksum status (1=bad, RED; 0=OK)
Bit 5 EEPROM Code Page 1 checksum status (1=bad, RED; 0=OK)
Bit 4 EEPROM Code Page 0 checksum status (1=bad, RED; 0=OK)
Bit 3 RAM Code Page checksum status (1=bad, RED; 0=OK)
Bits 2:0 RAM Code Page Source: 0-3 = copies of EEPROM Code Pages, 7=PROM, 6=modified

Bit 0 MAGInterface - MAG Instrument Interface Enable (1=enabled; 0=disabled, YELLOW)
Bit 1 STEUInterface - STE-U Instrument Interface Enable (1=enabled; 0=disabled, YELLOW)
Bit 2 SWEAInterface - SWEA/STE-D Instrument Interface Enable (1=enabled; 0=disabled, YELLOW)
Bit 3 SEPInterface - SEP Instrument Interface Enable (1=enabled; 0=disabled, YELLOW)
Bit 4 PLASTICInterface - PLASTIC Instrument Interface Enable (1=enabled; 0=disabled, YELLOW)
Bit 5 spare		
Bit 6 EEPROMWriteEnable - IDPU EEPROM Write Enable (1=enabled=YELLOW; 0=disabled)
Bit 7 PLASTICSysCmd - PLASTIC System Commands Enable (1=enabled, YELLOW; 0=disabled)

Bit 0 BurstTlm - Enable Burst Telemetry to be sent (for all ITelemEnables except where otherwise stated, 0=disabled, YELLOW; 1=enabled)
Bit 1 SEPTlm - Enable SEP Telemetry
Bit 2 MAGTlm - Enable MAG Telemetry
Bit 3 MAGBurst - Enable MAG Burst Collection
Bit 4 STERatesTlm - Enable STE Monitor Rates Telemetry
Bit 5 STERatesBurst - Enable STE Monitor Rates Burst Collection
Bit 6 STESpecTlm - Enable STE Spectra Telemetry
Bit 7 STESpecBurst - Enable STE Spectra Burst Collection
Bit 8 SWEADistTlm - Enable SWEA Distribution Telemetry
Bit 9 SWEADistBurst - Enable SWEA Distribution Burst Collection
Bit 10 SWEAPADTlm - Enable SWEA PAD Telemetry
Bit 11 SWEAMomTlm - Enable SWEA Moments Telemetry
Bit 12 SWEAFHKP - Enable SWEA Fast Housekeeping (no alarm state, 0 or 1 = green)
Bit 13 SWEASpecTlm - Enable SWEA Spectra Telemetry
Bit 14 BurstCriteria - Enable Burst Criteria Telemetry
Bit 15 SWEAMomComp - Enable SWEA Moment computation

Bit 0 MAGInterface - MAG Instrument Interface Active (1=active; 0=inactive, YELLOW)
Bit 1 STEUInterface - STE-U Instrument Interface Active (1=active; 0=inactive, YELLOW)
Bit 2 SWEAInterface - SWEA/STE-D Instrument Interface Active (1=active; 0=inactive, YELLOW)
Bit 3 SEPInterface - SEP Instrument Interface Active (1=active; 0=inactive, YELLOW)
Bit 4 PLASTICInterface - PLASTIC Instrument Interface Active (1=active; 0=inactive, YELLOW)
Bit 5 SWAVESInterface - SWAVES RT-RT Instrument Interface Active (1=active, 0=inactive, YELLOW)
Bit 6 SWAVESTimeout - SWAVES RT-RT Rx Timeout; SWAVES not responding.  (1=Timeout=YELLOW, 0=OK)
Bit 7 SEPTimeout - SEP Interface activity low for too long (1=Timeout=Yellow, 0=OK)

Bit 31 Seq0 IDPUPwrWarn - IDPU Power Warning Sequence Enable
Bit 30 Seq1 IDPUPwrWarnClr - IDPU Power Warning Clear Sequence Enable
Bit 29 Seq2 SEPPwrWarn - SEP Power Warning Sequence Enable
Bit 28 Seq3 SEPPwrWarnClr - SEP Power Warning Clear Sequence Enable
Bit 27 Seq4 SWEAPwrWarn - SWEA Power Warning Sequence Enable
Bit 26 Seq5 SWEAPwrWarnClr - SWEA Power Warning Clear Sequence Enable
Bit 25 Seq6 PLAPwrWarn - PLASTIC Power Warning Sequence Enable
Bit 24 Seq7 PLAPwrWarnClr - PLASTIC Power Warning Clear Sequence Enable
Bit 23 Seq8 ThrusterWarn - Thruster Warning Sequence Enable
Bit 22 Seq9 ThrusterWarnClr - Thruster Warning Clear Sequence Enable
Bit 21 Seq10 PointWarn - Coarse Pointing Warning Sequence Enable
Bit 20 Seq11 PointWarnClr - Coarse Pointing Warning Clear Sequence Enable
Bit 19 Seq12 SEPRecovery - SEP Recovery Sequence Enable
Bit 18 Seq13 - Command Sequence 13 Enable
Bit 17 Seq14 - Command Sequence 14 Enable
Bit 16 Seq15 - Command Sequence 15 Enable
Bit 15 Seq16 - Command Sequence 16 Enable
Bit 14 Seq17 - Command Sequence 17 Enable
Bit 13 Seq18 - Command Sequence 18 Enable
Bit 12 Seq19 - Command Sequence 19 Enable
Bit 11 Seq20: PLA_PS0 - PLASTIC PS 0 (Disable Entrance system; "Thruster/Coarse") - Sequence Enable
Bit 10 Seq21: PLA_Start - PLASTIC Startup Sequence Enable
Bit 9 Seq22: PLA_PS1 - PLASTIC PS 1 (Reduce HV levels) Sequence Enable
Bit 8 Seq23: PLA_PR0 - PLASTIC PR0 - (second half, recover from a "PAC DISCHARGE") Sequence Enable
Bit 7 Seq24: PLA_PS2 - PLASTIC PS2 (Disable entrance system, turn off HV, don't request turnoff "PAC Discharge") Sequence Enable
Bit 6 Seq25 - Command Sequence 25 Enable
Bit 5 Seq26: PLA_PR0 - PLASTIC PR0 (part 1 - enbale entrance system, bring up HVs and put system in mode 3; after PS2) Sequence Enable
Bit 4 Seq27: PLA_PR1 - PLASTIC PR1 (enable entrance system, Run if Thruster Coarse bits clear) Sequence Enable
Bit 3 Seq28 - Command Sequence 28 Enable
Bit 2 Seq29: PLA_PS3 - PLASTIC PS3 (disable Entrance system, turn off HV and requenst PLASTIC OFF; "IDPU/PLASTIC pwr down") Sequence Enable
Bit 1 Seq30: UserPeriodic - User Periodic Sequence Enable
Bit 0 Seq31: SystemPeriodic - System Periodic Sequence Enable

Bit 0 ISWEAAutoLUT - Enable SWEA Auto LUT Generation (1=manual)
Bit 1 ISTEAutoLUT - Enable STE Auto LUT Generation (1=manual)
Bit 2 ISWEAAutoV0 - Enable automatic generation of SWEA V0 setting (1=manual)
Bit 3 ISWEAMomE - Enable automatic generation of SWEA Moment energy coef (1=manual)
Bit 4 spare		
Bit 5 ISTEULUT - Current state of the STE-U LUT page select
Bit 6 ISTEDLUT - Current state of the STE-D LUT page select
Bit 7 ISWEALUT	 - Current state of the SWEA LUT page select

Bits 0:3 Mag Error counter (not 0 = RED, else OK)
Bits 4:7 Mag Command counter
Bit 8 spare, =1 (0=Red; 1=OK)
Bit 9 First (1st MAG sample after 1Hz tic)
Bit 10 Time (toggles at 1Hz)
Bit 11 Interface Parity Error (1=RED; 0=OK)
Bit 12 Interface Timeout error (1=RED; 0=OK)
Bit 13 ADC Cal (0=off, 1=on)
Bit 14 In Flight Cal (0=off, 1=on)
Bit 15 Range (0=low fields, high sensitivity, 1=high fields, low sensitivity)

To convert to current (sum of +5.1V current and -5.1V current, mA) use:	
ISTEUCur-corrected = STEUa*V + STEUb*ISTEU12V) - STEUc*(ISTEUVCC1-ISTEU5VD)

STEUa	40.20
STEUb	16.14
STEUc	201.00

To convert to current (sum of +5.1V current and -5.1V current, mA) use:		ISWEASTEDCur-corrected = STEDa*V + STEDb*ISWEASTE12V) - STEDc*(ISWEASTEDVCC1 - ISWEASTED5VD)

STEDa	40.20
STEDb	16.14
STEDc	201.00

Bit 0 CPE - Command Interface Parity Error (1=Error, RED; 0=OK)
Bit 1 AFEPWR - AFE Power status (1=on; 0=OFF=YELLOW)
Bit 2 AFESHDN - AFE Over-current detect (1=overcurrent=RED; 0=OK)
Bit 3 spare	
Bits 5:4 STECOVSTAT - STE Cover Status:(00=illegal, RED;  01=Closed; 10=Open; 11=Moving, YELLOW)
Bits 7:6 STECOVSW - STE Cover Actuator Power (00=OFF; 01=Open; 10=Close; 11=Illegal, RED)
Bit 8 ANORM - Indicates an anusual configuration, (0=Normal; 1=Unusual, YELLOW)
Bit 9 spare		
Bit 10 spare		
Bit 11 HSKPMD - Analog Housekeeping mode (0=cycling, 1=sweep)
Bit 12 ENBSTETP - Enable STE Test Pulser (1=enabled, YELLOW; 0=disabled)
Bit 13 spare		
Bit 14 ENBSWEA - Enable SWEA Subsystem (1=enabled, RED; 0=disabled)
Bit 15 PCE - Protected Command Error (1=error, RED; 0=OK)

Bit 3 SWEACOVSTAT - SWEA cover status, (1=closed, YELLOW; 0=open)
Bit 9 MCPHVENB - MCP HV Enable (0=disabled, 1=enabled)
Bit 10 NRHVENB - Non-regulated HV Enable (0=disabled, 1=enabled)
Bit 11 HSKPMD - Analog Housekeeping mode (0=cycling; 1=sweep)
Bit 13 ENBSWEATP - Enable SWEA Test Pulser (1=enabled, YELLOW; 0=disabled)
Bit 14 ENBSWEA - Enable SWEA Subsystem (1=enabled; 0=disabled, RED)

PLASTIC Solid State Detector Voltage Monitor - primary side estimate

0000  full HV disable
0001   HV register limit (in which an HV setpoint is compared to a register value for safety during ground testing; not used in flight)
0010   HV hard limit (maximum setpoints are limited for testing in air; not used in flight)
1111   HV full enable (flight use)

Bit 0 (LSB) adc_lu_det - latchup has been detected (1 means latchup has been detected)
Bit 2 adc_hung  
Bit 3 lu_ctr_ovfl
Bit 4 pac_cm_f_n - PAC current monitor flag 
Bit 5 mcp_cm_f_n - MCP current monitor flag 

To convert to time:
4 MSB = hours
6 middle bits = minutes
6 LSB = seconds