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: Sat May 16 17:30:01 UTC 2026
TIME OF LAST DATUM REC'D WAS Sat May 16 17:29:26 GMT 2026
DATA WAS IN FMT2 & OBSID 32342 WAS IN PROGRESS
WE ARE CURRENTLY AOS
I last saw data on Sat May 16 17:29:41 GMT 2026 (Day 136)

Tracelog File Status is: FRESH

Check the ACIS Limits table

CURRENT ORBITAL INFORMATION

EXPECTED SCHEDULED STATE AT:   Sat May 16 17:30:01 UTC 2026 (Day 136)

FP INSTRUMENT
GRATINGS STATUS
OBSID
TLM FORMAT
DITHER STATUS
SCS-155 STATUS
ACIS-S ( 73176 )
HETG-IN/LETG-OUT
32342
FMT2
ENAB
COACTS1

REAL-TIME STATE AT:                       Sat May 16 17:29:41 GMT 2026 (Day 136)

FP INSTRUMENT
GRATINGS STATUS
OBSID
TLM FORMAT
DITHER STATUS
SCS-155 STATUS
ACIS-S     (73176.00)
HETG-IN/LETG-OUT
32342
FMT2
ENAB
ACT



SCS-155 Deadman Status at:   Sat May 16 17:30:01 UTC 2026 (Day 136)

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



CURRENT RADIATION ENVIRONMENT ON CHANDRA

Start Time Sat May 16 17:29:23 GMT 2026
End Time Sat May 16 17:24:28 GMT 2026


HRC RADMON
Description
MEAN VALUE
SIGMA OF THE MEAN
SCS107 Limit
MCPTOT_B - 9 dayuncalibrated MCP total rate
19.70
1.15
30
SHIELD_B - 9 dayuncalibrated shield rate
22.30
0.47
245

LATEST ORBITAL FLUENCE DATA AT:   Sat May 16 17:30:01 UTC 2026

ALTITUDE
LATEST ACIS FLUX (ACE P3 CHANNEL)
ACIS FLUENCE (ACE P3 CHANNEL)
135210 km D
3.32e+01
4.159e+07



ACE 24 Hour EPAM FLUX AND FLUENCE DATA AT:   Sat May 16 17:30:01 UTC 2026

ALTITUDE
Plot
LAST P3
LAST Att. P3
ORB. Att. P3 FLU
ORB. Frac.
YEAR Att P3 FLU
135210 km D
24hr Plots
3.401e+02
3.401e+02
1.368e+07
0.281
7.117e+09

Date of Last P3 Data Point:   2026:135:19:16:57.00


Description of ACE 24 Hour table header items. Start Time: Sat May 16 17:29:25 GMT 2026



Target and Actual Quaternions:   Sat May 16 17:30:01 UTC 2026


MSID
Description
Value
TimeTime of the last value
Sat May 16 17:29:25 GMT 2026
AOTARQT1TARGET ATTITUDE QUATERNION 1
0.4329730300
AOTARQT2TARGET ATTITUDE QUATERNION 2
-0.4156699200
AOTARQT3TARGET ATTITUDE QUATERNION 3
0.2673380400
--------TARGET ATTITUDE QUATERNION 4
---------
AOATTQT1ACTUAL ATTITUDE QUATERNION 1
0.4329897200
AOATTQT2ACTUAL ATTITUDE QUATERNION 2
-0.4156546600
AOATTQT3ACTUAL ATTITUDE QUATERNION 3
0.2673087100
AOATTQT4ACTUAL ATTITUDE QUATERNION 4
0.7538548700


SIM AND FOCUS POSITIONS



Start Time: Sat May 16 17:29:0 GMT 2026
End Time: Sat May 16 17:29:0 GMT 2026

MSID
DESCRIPTION
LAST VALUE
[37]TSCPOSSIM TT Position
73176.00 / -1.00
[37]FAPOSSIM FA Position
-467.00 / -1.00
4HPOS[AB]ROHETG Angle
5.59 / 5.96
4LPOS[AB]ROLETG Angle
76.84 / 76.09



SIM Motor Overcurrent & Stall Cntrs
Start Time: Sat May 16 17:24:9 GMT 2026
End Time: Sat May 16 17:29:4 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: Sat May 16 17:24:28 GMT 2026
End Time: Sat May 16 17:29:23 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DP28AVO - 9day DPA +28V Input A
25.97
0.03
10
1DP28BVO - 9day DPA +28V Input B
26.51
0.04
10
1DPICACU - 9day DPA Input Current A
1.58
0.01
10
1DPICBCU - 9day DPA Input Current B
1.34
0.01
10
DPA A POWER - 9day 1DP28AVO*1DPICACU
41.03
0.26
NA
DPA B POWER - 9day 1DP28BVO*1DPICBCU
35.52
0.27
NA
1DPP0AVO - 9day DPA +5V Analog A
5.30
0.01
10
1DPP0BVO - 9day DPA +5V Analog B
5.28
0.01
10



ACIS DEA
Start Time: Sat May 16 17:26:42 GMT 2026
End Time: Sat May 16 17:29:9 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
25.92
0.02
10
1DE28BVO - 9day DEA +28V Input B
26.47
0.03
10
1DEP3AVO - 9day DEA +28V Analog A
30.60
0.00
10
1DEP3BVO - 9day DEA +28V Analog B
0.42
0.02
10
1DEP2AVO - 9day DEA +24V Analog A
25.08
0.00
10
1DEP2BVO - 9day DEA +24V Analog B
0.34
0.02
10
1DEP1AVO - 9day DEA +15V Analog A
16.17
0.00
10
1DEP1BVO - 9day DEA +15V Analog B
0.22
0.01
10
1DEP0AVO - 9day DEA +6V Voltage A
6.21
0.00
10
1DEP0BVO - 9day DEA +6V Voltage B
0.08
0.00
10
1DEN0AVO - 9day DEA -6V Voltage A
-6.44
0.01
10
1DEN0BVO - 9day DEA -6V Voltage B
-0.19
0.01
10
1DEN1AVO - 9day DEA -15V Voltage A
-16.23
0.00
10
1DEN1BVO - 9 day DEA -15V Voltage B
-0.42
0.02
10
1DEICACU - 9 day DEA Input Current A
1.69
0.15
10
1DEICBCU - 9 day DEA Input Current B
0.00
N/A
10
DEA A POWER - 9day 1DE28AVO*1DEICACU
43.80
3.89
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: Sat May 16 17:28:56 GMT 2026
SW End Time: Sat May 16 17:28:56 GMT 2026
ACIS MECH
End Time: Sat May 16 17:28:58 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: Sat May 16 17:28:58 GMT 2026
ACIS AT A GLANCE
End Time: Sat May 16 17:28:58 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: Sat May 16 17:26:44 GMT 2026
End Time: Sat May 16 17:29:11 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1CRAT - 9 day Cold Radiator Temp A
-118.35
0.00
10
1CRBT - 9 day Cold Radiator Temp B
404.81
0.00
10
1WRAT - 9 day Warm Radiator Temp A
-77.11
0.00
10
1WRBT - 9day Warm Radiator Temp B
-77.11
0.00
10
1DPAMYT - 9 day DPA -Y Panel Temp (RT810)
20.11
0.05
10
1DPAMZT - 9 day DPA -Z Panel Temp (RT830)
24.24
0.06
10
1DEAMZT - 9 day DEA -Z Panel Temp (RT830)
19.97
0.06
10
1SSPYT - 9 day Suppt Structure +Y Panel Temp (RT810)
21.79
0.04
10
1SSMYT - 9 day Suppt Structure -Y Panel Temp (RT811)
22.62
0.05
10
1PDEAAT - 9 day PSMC DEA Power Supply Temp A
40.69
0.00
10
1PDEABT - 9 day PSMC DEA Power Supply Temp B
30.99
0.64
10
1PIN1AT - 9 day PSMC Temp 1A
71.84
0.00
10
1CBAT - 9 day Camera Body Temp A
-57.42
0.00
10
1CBBT - 9 day Camera Body Temp B
-57.42
0.00
10
1DACTBT - 9 day DA Collimator-Top Temp B
-6.01
0.41
10

ISIM TEMPERATURES
 Start Time: Sat May 16 17:26:50 GMT 2026
End Time: Sat May 16 17:29:17 GMT 2026

MSID
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
3TSMYDPT - 9 day -Y Shell (facing DPA)
-54.73
0.00
10
3TSPYFET - 9 day +Y Shell (facing HRC)
-32.29
0.00
10
3TSPZDET - 9 day +Z Shell (facing DEA)
0.14
0.00
10
3TSPZSPT - 9 day +Z Shell (facing SS)
-4.85
0.00
10
3TSMXSPT - 9 day -X Shell (facing SS)
-29.79
0.00
10
3TSMXCET - 9 day -X Shell (facing HRC)
-79.68
0.00
10
3RCTUBPT - 9 day +X SIM (RCTU base)
12.34
0.00
10
3TTACS1T - 9 day TT at -Y foot
-2.28
0.00
10
3TTACS2T - 9 day TT at +Y foot
1.06
0.00
10
3TTACS3T - 9 day TT at +Z foot
-4.79
0.00
10


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HEATER DATA
ACIS DA
Start Time: Sat May 16 17:24:24 GMT 2026
End Time: Sat May 16 17:29:19 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
19.20
0.25
10
1DAHBT - 9day Detector Assy. Housing Temp Offset B
6.80
0.65
10

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MECHANISMS' DATA
ACIS DOOR
Start Time: Sat May 16 17:26:44 GMT 2026
End Time: Sat May 16 17:29:11 GMT 2026

* MSID *
DESCRIPTION
MEAN VALUE
SIGMA OF THE MEAN
# OF FRAMES
1DACTAT - 9 day Door Angle Potentiometer
68.90
0.00
10
1OAHAT - 9 day Open Actuator Housing Temp A
-20.09
0.00
10
1OAHBT - 9 day Open Acutator Housing Temp B
-24.60
0.33
10
1MAHOATDoor Open Actuator Temp A
440.41
0.93
10
1MAHOBT Door Open Actuator Temp B
439.27
0.93
10
1MAHCATDoor Close Actuator Temp A
440.41
0.93
10
1MAHCBT Door Close Actuator Temp B
438.12
0.76
10


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

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