CXC Manager’s Status Report
Chandra Users’ Committee Meeting
Edward M. Mattison
29 June 2004
Topics
• Program Level Status
• Operations
• Mission Metrics
• Data System
• Chandra Grant Awards
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Program Level Status
•
The spacecraft and science instruments continue to perform extremely well,
and operations continue to be routine
– Mission was halted twice due to solar activity, and loads were interrupted three
times for Target of Opportunity observations
– One minor anomaly occurred (details in Operations Status)
– No safe modes have occurred since last report (last safemode 1999)
•
Science planning, data processing and data distribution are proceeding
smoothly
•
Cycle 6 Peer Review was conducted 15-17 June 04; went very well
•
15 press releases, 2 additional image releases and 2 SSUs in last 6 months
•
Independent Implementation Review (IIR) held 11/18/03 yielded no findings
and 2 observations. We submitted a final response to Observation 1, on peer
review security, and are completing a preliminary response to Observation 2,
on EPO strategy.
•
Submitted financial Program Operating Plan in April 04. The budget & staff
profiles are on plan through FY05. We are ready to absorb HRC, ACIS &
HETG PI subcontracts 1 Oct 04.
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Operations Status
• Spacecraft
– Nominal winter eclipse season
– EPHIN exhibited another brief occurrence of the supply voltage being
current limited due to high temperatures (minor anomaly). In response,
the temperature constraints used by mission planning have been tightened.
A time-dependent maximum operating temperature is in the process of
being implemented in the mission planning guidelines.
– A diagnostic procedure was performed to test one possible cause of the
stuck-on heater located on the Optical Bench Assembly in Zone 50. The
power to a set of survival heaters, including the one in Zone 50, was
turned off. After seeing no thermal response, the power was turned back
on. The results indicated that the survival heater is functioning properly
(i.e. it is not stuck on). The stuck-on heater is not causing a problem for
operations.
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Operations Status (con’t)
• Spacecraft (con’t)
– Resumed performing angular momentum unloads by scheduling them in
the weekly spacecraft command loads rather than initiating them from the
ground during a real-time contact.
–
In response to the failure of the -Y shutter motor selection relay, we
patched HRC safing stored command sequences to remove mechanism
commanding, in order to prevent accidental shutter closure.
– The on-board computer telemetry request list was patched to read the
HRC anticoincidence shield and MCP event rates. This was a necessary
step toward being able to use the HRC to monitor radiation in the event
that the EPHIN instrument becomes unusable.
– Implemented use of the Chandra Radiation Model for predicting
operating times near the radiation belt entry and exit. The more accurate
predictions are expected to add ~2 hours per week or ~375 ks per year of
observing time.
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Operations Status (con’t)
• Science Instruments
– Science instruments are operating extremely well
– Preparations for an ACIS bake-out are proceeding
– HRC anticoincidence shield data are being examined as a function of
radiation level in preparation for use in radiation safing in lieu of the
EPHIN instrument
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Operations Status (con’t)
•
Load interrupt TOOs
Date
•
Target
Request
03/10/04
1ES 1028+511
24 hours
03/16/04
GRS 1915+105
3 days
05/25/04
SGR 1806-20
3 days
Operations Ground System Updates
Date
01/15/04
03/05/04
04/09/04
05/12/04
Version
ONLS 3.9.4
FOT tools
FOT tools
OFLS 10.3
05/12/04
FOT tools
29 June 2004
Change
Support Linux migration, script fixes
Fix Sausage command checker, other tools
Enhance Sausage
Chandra radiation model, rad zone
automation
Enhance to support OFLS 10.3
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Mission Metrics
MUPS Fuel Usage
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Mission Metrics (con’t)
MUPS Warm Start Count
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Mission Metrics (con’t)
Scheduled Observing Efficiency
0.80
0.75
Scheduled Efficiency
0.70
0.65
0.60
0.55
0.50
0.45
0.40
Jun-03
29 June 2004
Jul-03
Aug-03
Sep-03
Oct-03
Nov-03
Dec-03
Jan-04
CXC Status Report/CUC
Feb-04
Mar-04
Apr-04
May-04
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Mission Metrics (con’t)
Observing Time
2000
Observing time per month (ks)
1800
1600
1400
1200
1000
800
Noncal sched
600
Calib sched
400
200
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CXC Status Report/CUC
May
-04
Apr04
Mar04
Feb04
Jan-0
4
3
Dec0
3
Nov0
Oct03
Sep03
3
Aug0
Jul-0
3
Jun0
3
0
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Data System
• Data processing
– Average time from observation to data delivery has continued at <1 week
• CIAO and Data System Software Releases
Date
Release Contents include:
01/30/04
DS 7.2
03/16/04
DS 7.2.1 Cycle 6 proposal software
04/22/04
DS 7.2.2 Fix to multimon
06/23/04
DS 7.3
06/23/04
CIAO 3.1 ACIS time-dependent gain, mkacisrmf
MTA phase IIa, Webchaser upgrade
Repro3 tools, archive V&V, L3 (beta) pipeline & tools
Grant Awards
• Grant award process continues to be nominal
• Transition to new Smithsonian-wide MIS system is still being felt:
~3 weeks to grant award (had been ~1 week)
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Data Delivery Effectiveness
As of middle of following month
Month
Jun-03
Jul-03
Aug-03
Sep-03
Oct-03
Nov-03
Dec-03
Jan-04
Feb-04
Mar-04
Apr-04
May-04
Number of Days to Data Delivery Number
Obs
Deliv
Min Avg Max
51
53
60
54
36
89
43
65
59
53
36
50
29 June 2004
1
1
0
1
1
0
1
0
0
1
1
0
6
7
7
5
6
3
4
3
4
6
5
5
22
19
34
25
21
12
9
19
13
39
18
23
50
53
60
54
36
89
43
65
59
53
36
50
As of 6/16/04
Number
Outstanding
Number
Deliv
Number
Outstanding
1
0
0
0
0
0
0
0
0
0
0
0
51
53
60
54
36
89
43
65
59
53
36
50
0
0
0
0
0
0
0
0
0
0
0
0
CXC Status Report/CUC
Obsids Outstandin g
(see below for details)
Page 13
Chandra Grant Awards
As of middle of following month
Month of Data
Delivery
No. Grants (1)
No.
Outstanding
No. Grants
Awarded
As of 6/17/04
Avg days to
award*
No. Grants
No.
Awarded Outstanding
Outstanding Awards
Proposal no, Comments
Grants to Non-Fe deral Ins titutions
June 03
July 03
August 03
September 03
October 03
8
27
14
17
19
5
23
13
13
6
3
4
1
4
9
15
23
19
14
18
8
27
14
17
19
0
0
0
0
1 Issued 4 awards late pending approval for cycle 5
November 03
19
3
2
20
19
0
December 03
January 04
February 04
March 04
April 04
May 04
48
54
14
23
11
4
33
35
12
15
5
3
15
19
2
8
6
1
21
40
35
15
18
10
48
54
14
20
11
3
0
0
0
3 5400189, 5508167, 5700535
0
1 5800440
funding from MSFC . 4400554 Πcancelled; PI
transferred, waiting for budget from new institution
Issued 14 awards late pending approval for cycle 5
funding from MSFC .
* Grant awards delayed due to SAO conversion to new Institute-wide financial software system.
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