Chandra Director’s Office
Proposal Cycle 8
# Proposals per Cycle
 725 submitted proposals
 *6.4 oversubscribed
(based on time)
184 accepted proposals
(42 w/foreign PIs)
+9 joint, accepted by
other reviews
90
900
80
800
70
700
60
600
LP
All proposals
40
Number
50
500
400
GO
VLP
LP
Archive
VLP
Theory
Archive
30
Theory
300
20
Cost Review in progress
164 Cost proposals
+9 joint cost proposals
Chandra Users’ Committee, 17-18 Oct 2006
200
10
100
0
1 0
2
1
3
2
4
3
5
4
5
6
6
7
7
8
8
Cycle
Chandra Director’s Office
Time request and oversubscription
Time Requested per Cycle
Oversubscription in Time
120000
8
7
100000
6
Time (ksecs)
80000
5
60000
Time request
4
Ratio
3
40000
2
20000
1
0
0
1
1
2
3
4
5
6
7
8
Cycle
Chandra Users’ Committee, 17-18 Oct 2006
2
3
4
5
6
7
8
Cycle
Chandra Director’s Office
% Proposals accepted of each Type vs Cycle
Percent Proposals Accepted
60
Percent Accepted
50
GO
LP
VLP
Archive
Theory
Series6
40
30
20
10
0
1
2
3
4
5
6
7
8
Cycle
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
% Time Approved by Science Area
Surveys: Glc
1% Solar System
Stars & WD
1%
Surveys: Eglc
12%
17%
Time Allocated by
Science Category
WD Binrs & CV
7%
Clusters
11%
BH&NS Binrs
9%
AGN
21%
SN, SNR
13%
Gals: Diff
2%
Gals: Pplns
6%
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
% Requested Time Approved by Science Area
Percent of Requested Time Approved
Surveys: Glc
Surveys: Eglc
Clusters
AGN
Gals: Pplns
Gals: Diff
SN, SNR
BH&NS Binrs
WD Binrs & CV
Stars & WD
Solar System
0
10
20
Chandra Users’ Committee, 17-18 Oct 2006
30
40
50
Chandra Director’s Office
60
Time Allocated per Instrument
Time Allocated per Instrument
HRC-S
3%
HRC-S/LETG
0%
HRC-I
0%
ACIS-I
35%
ACIS-S
42%
ACIS-S/LETG
4%
ACIS-S/HETG
16%
b
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
% Grating Time Approved
Over-subscription
Ratio
8
6
TOTAL
4
HETG
2
LETG
0
1
2
3
4
5
6
7
8
Cycle
Grating Time Request
30000
Time
25000
20000
Total
15000
HETG
10000
LETG
5000
0
1
2
3
4
5
6
7
8
Cycle
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
New in Cycle 8
 Constrained Time: Much stricter limits on constrained time
plus accurate accounting in review GUI. Resulted in
successfully applying 15% constrained time limit to Cycle 8
GO+GTO time.
 Alternate targets: allowed for TOO proposals
 Rasters/Grids: Implemented after CfP release due to popular
demand: set flag plus charge lower overheads. 10 proposals
submitted, varying from a few sources sufficiently close to one
another (<1 deg) to a grid of 300 pointings. 3 were accepted
(12,59,84 all unconstrained).
We are fully implementing grids in Cycle 9.
 Results release: 14 July 2006, a week later than usual: added
complexity due to of constrained time limits.
 Cost Review: Deadline 14 Sept 2006, worked well.
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
Other Imminent CDO Business
 Cycle 8 Cost Review:
Results November 2006
 Extragalactic Surveys Workshop:
68 Nov 2006
(website: cxc.harvard.edu/xsurveys06)
 Chandra Fellowships:
deadline 2 Nov 2006, 5pm
 Cycle 9 CfP Release: 15 Dec 2006,
software, documentation and website updates
are ongoing
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office
Response to April CUC Report
• Prioritizing the Chandra Source Catalog: FTEs
have been and will be added to this team. Mike Nowak
provided details in his presentation.
• Chandra Summary for Peer Review: Write-up
prepared and used at the Cycle 8 Peer Review.
Circulated to CUC 3 Aug 2006 for comment. Will be
posted on the website for general use once other
missions have provided confirmation/input.
• CUC Meeting Advertising: Meeting announced in
electronic bulletins: #52, July and #54 Oct 2006
• Chandra/XMM-Newton Cross-Calibration: status
reported in Herman Marshall’s presentation
Chandra Users’ Committee, 17-18 Oct 2006
Chandra Director’s Office