ISHMAEL.CFA.HARVARD.EDU LIVE ACIS DATA: MEAN VALUES, SIGMAS, AND STATUS
ACIS Live: Mean Engineering Data - ISHMAEL.CFA.HARVARD.EDU
Web Page Last Updated: Wed Feb 4 12:45:01 UTC 2026
TIME OF LAST DATUM REC'D WAS Wed Feb 4 3:54:46 GMT 2026
DATA WAS IN FMT2 & OBSID 32142 WAS IN PROGRESS
WE ARE CURRENTLY LOS
I last saw data on Wed Feb 4 3:55:1 GMT 2026 (Day 35)

Tracelog File Status is: FRESH

Check the ACIS Limits table

CURRENT ORBITAL INFORMATION

EXPECTED SCHEDULED STATE AT:   Wed Feb 4 12:45:01 UTC 2026 (Day 35)

FP INSTRUMENT
GRATINGS STATUS
OBSID
TLM FORMAT
DITHER STATUS
SCS-155 STATUS
ACIS-I ( 92904 )
HETG-OUT/LETG-OUT
31049
FMT2
ENAB
COACTS1

REAL-TIME STATE AT:                       Wed Feb 4 3:55:1 GMT 2026 (Day 35)

FP INSTRUMENT
GRATINGS STATUS
OBSID
TLM FORMAT
DITHER STATUS
SCS-155 STATUS
ACIS-S     (75623.00)
HETG-OUT/LETG-OUT
32142
FMT2
ENAB
ACT



SCS-155 Deadman Status at:   Wed Feb 4 12:45:01 UTC 2026 (Day 35)

SCS-155 Deadman
Description
Latest Real Time Contact State
COSCS155S - 9 daySCS-155 Active Status
ACT



CURRENT RADIATION ENVIRONMENT ON CHANDRA

Start Time Wed Feb 4 3:54:43 GMT 2026
End Time Wed Feb 4 3:49:48 GMT 2026


HRC RADMON
Description
MEAN VALUE
SIGMA OF THE MEAN
SCS107 Limit
MCPTOT_B - 9 dayuncalibrated MCP total rate
20.30
1.33
30
SHIELD_B - 9 dayuncalibrated shield rate
22.80
0.57
245

LATEST ORBITAL FLUENCE DATA AT:   Wed Feb 4 12:45:01 UTC 2026

ALTITUDE
LATEST ACIS FLUX (ACE P3 CHANNEL)
ACIS FLUENCE (ACE P3 CHANNEL)
140377 km A
1.79e+02
3.376e+06



ACE 24 Hour EPAM FLUX AND FLUENCE DATA AT:   Wed Feb 4 12:45:01 UTC 2026

ALTITUDE
Plot
LAST P3
LAST Att. P3
ORB. Att. P3 FLU
ORB. Frac.
YEAR Att P3 FLU
140377 km A
24hr Plots
1.869e+01
0.000e+00
2.861e+06
1.0
6.087e+08

Date of Last P3 Data Point:   2026:034:14:27:04.00


Description of ACE 24 Hour table header items. Start Time: Wed Feb 4 3:54:45 GMT 2026



Target and Actual Quaternions:   Wed Feb 4 12:45:01 UTC 2026


MSID
Description
Value
TimeTime of the last value
Wed Feb 4 3:54:45 GMT 2026
AOTARQT1TARGET ATTITUDE QUATERNION 1
0.6013408900
AOTARQT2TARGET ATTITUDE QUATERNION 2
-0.3952987800
AOTARQT3TARGET ATTITUDE QUATERNION 3
-0.6045281900
--------TARGET ATTITUDE QUATERNION 4
---------
AOATTQT1ACTUAL ATTITUDE QUATERNION 1
0.6013288500
AOATTQT2ACTUAL ATTITUDE QUATERNION 2
-0.3952950800
AOATTQT3ACTUAL ATTITUDE QUATERNION 3
-0.6045610900
AOATTQT4ACTUAL ATTITUDE QUATERNION 4
0.3415424800


SIM AND FOCUS POSITIONS



Start Time: Wed Feb 4 3:54:21 GMT 2026
End Time: Wed Feb 4 3:54:21 GMT 2026

MSID
DESCRIPTION
LAST VALUE
[37]TSCPOSSIM TT Position
75623.00 / -1.00
[37]FAPOSSIM FA Position
-467.00 / -1.00
4HPOS[AB]ROHETG Angle
77.59 / 78.71
4LPOS[AB]ROLETG Angle
76.84 / 76.09



SIM Motor Overcurrent & Stall Cntrs
Start Time: Wed Feb 4 3:49:29 GMT 2026
End Time: Wed Feb 4 3:54:24 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
3SMOTOCSIM Motor Overcurrent Cntr
0.00
0.00
10
3SMOTSTLSIM Motor Stall Cntr
0.00
0.00
10



ELECTRICAL DATA
ACIS DPA
Start Time: Wed Feb 4 3:49:48 GMT 2026
End Time: Wed Feb 4 3:54:43 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DP28AVO - 9day DPA +28V Input A
25.63
0.04
10
1DP28BVO - 9day DPA +28V Input B
26.04
0.04
10
1DPICACU - 9day DPA Input Current A
1.21
0.01
10
1DPICBCU - 9day DPA Input Current B
0.99
0.01
10
DPA A POWER - 9day 1DP28AVO*1DPICACU
31.01
0.26
NA
DPA B POWER - 9day 1DP28BVO*1DPICBCU
25.78
0.26
NA
1DPP0AVO - 9day DPA +5V Analog A
5.26
0.01
10
1DPP0BVO - 9day DPA +5V Analog B
5.23
0.00
10



ACIS DEA
Start Time: Wed Feb 4 3:52:35 GMT 2026
End Time: Wed Feb 4 3:54:30 GMT 2026

DEA A-Side MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
DEA B-Side MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DE28AVO - 9day DEA +28V Input A
25.56
0.04
8
1DE28BVO - 9day DEA +28V Input B
25.98
0.04
8
1DEP3AVO - 9day DEA +28V Analog A
30.56
0.02
8
1DEP3BVO - 9day DEA +28V Analog B
0.30
0.00
8
1DEP2AVO - 9day DEA +24V Analog A
24.75
0.02
8
1DEP2BVO - 9day DEA +24V Analog B
0.24
0.00
8
1DEP1AVO - 9day DEA +15V Analog A
15.85
0.00
8
1DEP1BVO - 9day DEA +15V Analog B
0.16
0.00
8
1DEP0AVO - 9day DEA +6V Voltage A
6.16
0.00
8
1DEP0BVO - 9day DEA +6V Voltage B
0.06
0.00
8
1DEN0AVO - 9day DEA -6V Voltage A
-6.31
0.01
8
1DEN0BVO - 9day DEA -6V Voltage B
-0.17
0.01
8
1DEN1AVO - 9day DEA -15V Voltage A
-15.90
0.01
8
1DEN1BVO - 9 day DEA -15V Voltage B
-0.35
0.01
8
1DEICACU - 9 day DEA Input Current A
1.49
0.15
8
1DEICBCU - 9 day DEA Input Current B
0.00
N/A
8
DEA A POWER - 9day 1DE28AVO*1DEICACU
38.08
3.83
NA
DEA B POWER - 9day 1DE28BVO*1DEICBCU
0.00
N/A
N/A

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ACIS-AT-A-GLANCE STATUS LIGHTS
HW AND SW LEDS
HW End Time: Wed Feb 4 3:54:16 GMT 2026
SW End Time: Wed Feb 4 3:54:16 GMT 2026
ACIS MECH
End Time: Wed Feb 4 3:54:18 GMT 2026




MSID
1STAT[7654]ST    STATUS -->
1STAT7STRED (0) -> FIFO EmptyGREEN (1) -> FIFO Not Empty
1STAT6STRED (0) -> FIFO FullGREEN (1) -> FIFO Not Full
1STAT5STRED (0) -> BEP Held In ResetGREEN (1) -> BEP Not In Reset
1STAT4STRED (0) -> BEP A SelectedGREEN (1) -> BEP B Selected
MSID
1STAT[3210]ST    STATUS -->
1STAT3STRED (0) -> BEP Code InitializedGREEN (1) -> BEP Code Initializing
1STAT2STRED (0) -> Watchdog BootGREEN (1) -> Normal Boot
1STAT1STRED (0) -> Science ActiveGREEN (1) -> Science Idle
1STAT0ST0 or 1: BEP SW Is RunningBit Toggles Every 64s

MSID
DESCRIPTION
STATUS
1MDBUAONDoor Enable A
1MDBUBONDoor Enable B
1MODRAOPDoor Open Drive A
1MODRBOPDoor Open Drive B
1MCDRACLDoor Close Drive A
1MCDRBCLDoor Close Drive B
1VVDBAONVent Valve Enable A
1VVDBBONVent Valve Enable B
1VVODAOPVent Valve Open Drive A
1VVODBOPVent Valve Open Drive B
1VVCDACLVent Valve Close Drive A
1VVCDBCLVent Valve Close Drive B
1LVDBAONL V Enabled A
1LVDBBONL V Enabled B




















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ACIS AT A GLANCE
End Time: Wed Feb 4 3:54:18 GMT 2026
ACIS AT A GLANCE
End Time: Wed Feb 4 3:54:18 GMT 2026



MSID
DESCRIPTION
STATUS
1DPPSAXDPA POWER SUPPLY EN/DIS A
1DPPSADPA POWER SUPPLY ON/OFF A
1DPPSBXDPA POWER SUPPLY EN/DIS B
1DPPSBDPA POWER SUPPLY ON/OFF B
1DEPSAXDEA POWER SUPPLY EN/DIS A
1DEPSADEA POWER SUPPLY ON/OFF A

MSID
DESCRIPTION
STATUS
1DAHTAENDA HTR EN/DIS A
1DAHTAONDA HTR ON/OFF A
1DAHTBENDA HTR EN/DIS B
1DAHTBONDA HTR ON/OFF B
1DABOAENDA BAKE OUT EN/DIS A
1DABOAONDA BAKE OUT ON/OFF A
1DABOBENDA BAKE OUT EN/DIS B
1DABOBONDA BAKE OUT ON/OFF B
1DE28AOCDEA POWER SUPPLY +28V Over-Current Protection
1DE28BOCDEA POWER SUPPLY +28V Over-Current Protection
1DEMVAOCDEA POWER SUPPLY Multi-V Over-Current Protection
1DEMVBOCDEA POWER SUPPLY Multi-V Over-Current Protection
1DPCPAOCDPA POWER SUPPLY Over-Current Protection
1DPCPBOCDPA POWER SUPPLY Over-Current Protection
1DEPSBXDEA POWER SUPPLY EN/DIS B
1DEPSBDEA POWER SUPPLY ON/OFF B
























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THERMAL DATA

THERMAL CONTROL DATA: SIDE A and B
Start Time: Wed Feb 4 3:52:20 GMT 2026
End Time: Wed Feb 4 3:54:31 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1CRAT - 9 day Cold Radiator Temp A
-119.95
0.40
9
1CRBT - 9 day Cold Radiator Temp B
404.81
0.00
5
1WRAT - 9 day Warm Radiator Temp A
-79.56
0.00
9
1WRBT - 9day Warm Radiator Temp B
-79.56
0.00
5
1DPAMYT - 9 day DPA -Y Panel Temp (RT810)
11.09
0.05
10
1DPAMZT - 9 day DPA -Z Panel Temp (RT830)
14.30
0.05
10
1DEAMZT - 9 day DEA -Z Panel Temp (RT830)
8.98
0.00
8
1SSPYT - 9 day Suppt Structure +Y Panel Temp (RT810)
12.11
0.12
10
1SSMYT - 9 day Suppt Structure -Y Panel Temp (RT811)
13.01
0.05
10
1PDEAAT - 9 day PSMC DEA Power Supply Temp A
37.49
0.42
8
1PDEABT - 9 day PSMC DEA Power Supply Temp B
27.93
0.68
8
1PIN1AT - 9 day PSMC Temp 1A
71.84
0.00
8
1CBAT - 9 day Camera Body Temp A
-62.36
0.00
9
1CBBT - 9 day Camera Body Temp B
-62.36
0.00
5
1DACTBT - 9 day DA Collimator-Top Temp B
-10.04
0.00
10

ISIM TEMPERATURES
 Start Time: Wed Feb 4 3:53:48 GMT 2026
End Time: Wed Feb 4 3:54:38 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
3TSMYDPT - 9 day -Y Shell (facing DPA)
-54.73
0.00
4
3TSPYFET - 9 day +Y Shell (facing HRC)
-42.26
0.00
4
3TSPZDET - 9 day +Z Shell (facing DEA)
-12.33
0.00
4
3TSPZSPT - 9 day +Z Shell (facing SS)
-9.84
0.00
4
3TSMXSPT - 9 day -X Shell (facing SS)
-37.28
0.00
4
3TSMXCET - 9 day -X Shell (facing HRC)
-79.68
0.00
4
3RCTUBPT - 9 day +X SIM (RCTU base)
20.30
0.00
4
3TTACS1T - 9 day TT at -Y foot
-2.70
0.00
4
3TTACS2T - 9 day TT at +Y foot
-2.28
0.00
4
3TTACS3T - 9 day TT at +Z foot
-8.55
0.00
4


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HEATER DATA
ACIS DA
Start Time: Wed Feb 4 3:49:44 GMT 2026
End Time: Wed Feb 4 3:54:39 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DAHHAVO - 9 day DA Housing Htr +28V Input A
0.00
0.00
10
1DAHHBVO - 9 day DA Housing Htr +28V Input B
0.00
0.00
10
1DAHAVO - 9 day Detector Assy. Htr Voltage A
0.00
0.00
10
1DAHBVO - 9 day Detector Assy. Htr Voltage B
0.00
0.00
10
1DAHACU - 9 day Detector Assy. Htr Current A
0.00
0.00
10
1DAHBCU - 9 day Detector Assy. Htr Current B
0.00
0.00
10
HTR A POWER - 9day 1DAHAVO*1DAHACU
0.00
NA
NA
HTR B POWER - 9day 1DAHBVO*1DAHBCU
0.00
NA
NA
1DAHAT - 9day Detector Assy. Housing Temp Offset A
20.60
0.31
10
1DAHBT - 9day Detector Assy. Housing Temp Offset B
7.40
0.52
10

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MECHANISMS' DATA
ACIS DOOR
Start Time: Wed Feb 4 3:53:26 GMT 2026
End Time: Wed Feb 4 3:54:32 GMT 2026

* MSID *
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DACTAT - 9 day Door Angle Potentiometer
68.12
0.21
10
1OAHAT - 9 day Open Actuator Housing Temp A
-25.10
0.00
9
1OAHBT - 9 day Open Acutator Housing Temp B
-27.60
0.00
5
1MAHOATDoor Open Actuator Temp A
438.25
0.84
9
1MAHOBT Door Open Actuator Temp B
440.41
1.40
5
1MAHCATDoor Close Actuator Temp A
441.43
0.84
9
1MAHCBT Door Close Actuator Temp B
439.27
1.40
5


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Web Page Designed and Maintained by:
Gregg Germain gregg@head.cfa.harvard.edu

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