Chandra X-Ray Observatory (CXC)

Cycle 24 Recommended Targets: Statistics

Statistics for all proposals submitted to the peer review, including the GTO proposals which were competed. This does NOT include GTO time which was uncompeted or Calibration observations. Units for time are given in kiloseconds.

1. Proposals by Type

                                Requested  
Type           #Prop   #Tgts  #TC=Y    ReqTime    w/Prob
--------------------------------------------------------
GO              254     760    74     32328.14  32328.14
LP               29     151     3     16260.80  16260.80
TOO              62      97    29      6762.50   3646.90
TOO/LP            3       7     4      1500.00    739.00
VLP               9     205     3     16470.00  16470.00
ARCHIVE          46       0     0      3966.02      0.00
THEORY           20       0     0      1567.43      0.00
                ---    ----   ---    --------- ---------
                423    1220   113     73321.44  69444.84
                 Approved 
#Prop   #Tgts  #TC=Y    AppTime    w/Prob Units
-------------------------------------------------
  95     284    28     10162.10  10162.10  ksec
   4      23     0      2582.00   2582.00  ksec
  34      40    13      3637.00   1983.40  ksec
   2       4     2      1040.00    304.00  ksec
   1      10     0      1000.00   1000.00  ksec
  11       0     0      1038.05      0.00  1000 US dollars
   7       0     0       609.14      0.00  1000 US dollars
 ---    ----   ---    --------- ---------
 154     361    43     18421.10  16031.50

Multicycle Proposals
                             Requested  
Type           #Prop  Cycle 24  Cycle 25  Cycle 26 
--------------------------------------------------
GO                4    205.00    210.00    215.00
LP                1    234.00    233.00    233.00
TOO               2    430.00    235.00      0.00
              ----- --------- --------- ---------
                  7    869.00    678.00    448.00 
               Approved  
 #Prop  Cycle 24  Cycle 25  Cycle 26 
------------------------------------
     3    145.00    145.00     75.00

     2    260.00    135.00      0.00
 ----- --------- --------- ---------
     5    405.00    280.00     75.00

2. Proposals by Subject Category
#Props includes Archive/Theory proposals.

                                                    Requested 
Category                                   #Prop   #Tgts     ReqTime     w/Prob
-------------------------------------------------------------------------------
SOLAR SYSTEM AND EXOPLANETS                    6      15       335.00    335.00
STARS AND WD                                  32      95      5480.00   5372.00
WD BINARIES AND CV                             6       8       340.00    230.00
BH AND NS BINARIES                            57      97      5910.00   4503.50
SN, SNR AND ISOLATED NS                       63     119      7875.00   7321.90
GRAVITATIONAL WAVE EVENT                       5       8      1650.00    943.00
NORMAL GALAXIES: DIFFUSE EMISSION              8       4      1278.00   1278.00
NORMAL GALAXIES: X-RAY POPULATIONS            25     235      5100.00   5091.00
ACTIVE GALAXIES AND QUASARS                  129     462     25457.14  24638.39
CLUSTERS OF GALAXIES                          72     136     15429.30  15429.30
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS     5       6      2370.00   2370.00
GALACTIC DIFFUSE EMISSION AND SURVEYS         15      35      2097.00   1932.75
                                             ---    ----    --------- ---------
                                             423    1220     73321.44  69444.84
           Approved 
  #Prop   #Tgts    AppTime    w/Prob
  ----------------------------------
    1       6        80.00     80.00
   13      14      1790.00   1790.00
    3       2       125.00     80.00
   29      50      3209.00   2414.00
   23      34      2255.00   2049.90
    2       3       770.00    304.00
    2       0         0.00      0.00
    6       5       307.00    307.00
   41     181      6128.80   5414.55
   26      48      3096.30   3096.30
    0       0         0.00      0.00
    8      18       660.00    495.75
  ---    ----     --------  --------
  154     361     18421.10  16031.50

Multicycle Proposals
                                                         Requested  
Category                                   #Prop  Cycle 24  Cycle 25  Cycle 26 
------------------------------------------------------------------------------
BH AND NS BINARIES                             1     90.00     35.00      0.00
GRAVITATIONAL WAVE EVENT                       1    340.00    200.00      0.00
SN, SNR AND ISOLATED NS                        2    294.00    298.00    303.00
STARS AND WD                                   3    145.00    145.00    145.00
                                           ----- --------- --------- ---------
                                               7    869.00    678.00    448.00 
              Approved  
#Prop  Cycle 24  Cycle 25  Cycle 26 
-----------------------------------
    1     90.00     35.00      0.00 
    1    170.00    100.00      0.00 

    3    145.00    145.00     75.00 
  --- --------- --------- ---------
    5    405.00    280.00     75.00

3. Targets,Exposure Time by Detector

                                Requested
Detector  Grating    #Tgts      Time    w/Prob
----------------------------------------------
ACIS-I    NONE         219  29678.80  29489.30
ACIS-S    HETG          57   6500.00   5672.50
ACIS-S    LETG           1     50.00     50.00
ACIS-S    NONE         852  35120.64  32291.04
HRC-I     NONE          76   1582.00   1582.00
HRC-S     LETG           3    110.00     80.00
HRC-S     NONE          12    280.00    280.00
                      ---- --------- ---------
                      1220  73321.44  69444.84
            Approved
 #Tgts      Time    w/Prob
--------------------------
    86   6594.30   6513.30
    14   1385.00   1000.00

   244   9940.80   8017.20
    10    356.00    356.00

     7    145.00    145.00
  ----  --------  --------
   361  18421.10  16031.50

4. Targets by Exposure Time Range

            Requested
Time            #Tgts
---------------------
   0<=T<2            0
   2<=T<4           88
   4<=T<8          137
   8<=T<16         353
  16<=T<32         231
  32<=T<64         148
  64<=T<128        136
 128<=T<400        104
 400<=T<1000        16
1000<=T<10000        7
      Approved
         #Tgts
         -----
             0
            46
            44
            43
            83
            51
            52
            42
             0
             0

5. Proposals by Exposure Time Range

            Requested
Time            #Prop
---------------------
   0<=T<2            0
   2<=T<4            0
   4<=T<8            0
   8<=T<16           8
  16<=T<32          22
  32<=T<64          57
  64<=T<128        104
 128<=T<400        125
 400<=T<1000        32
1000<=T<10000        9
      Approved
         #Prop
         -----
             0
             0
             0
             4
            14
            20
            48
            43
             6
             1

6. Number of Proposals per P.I.

   Requested
#Prop   #P.I.
-------------
  1       258
  2        54
  3        15
  4         2
  5         1
 Approved
     #P.I.
 ---------
     124
      15



7. Proposals by Country

                       Requested
Country         #Prop       Time    w/Prob
------------------------------------------
CANADA            9      1413.00   1383.30
CHINA             1       100.00    100.00
FRANCE            2       165.00     43.50
GERMANY          13      1856.00   1637.50
GREECE            1       200.00    200.00
INDIA             6       618.00    610.00
ISRAEL            1       180.00    180.00
ITALY            33      8403.00   7949.00
JAPAN             8       813.00    729.00
KOREA, SOUTH      2       210.00    210.00
NETHERLANDS       7      1187.00   1046.00
SPAIN             2       200.00    123.00
SWEDEN            1       200.00    200.00
TAIWAN            5       435.00    435.00
UNITED ARAB EMI   1        12.00      3.60
UNITED KINGDOM   11      4194.00   4161.50
US                1       657.00    657.00
USA             320     52778.44  49806.44


Total Foreign   104     20843.00  19668.40
             Approved
    #Prop         Time     w/Prob
    -----------------------------
        3       155.00    155.00
        1       100.00    100.00
        1       150.00     28.50
        5       497.00    392.50

        1        80.00     80.00

       12      1968.00   1595.00
        3       330.00    330.00

        4       780.00    690.00
        1        90.00     90.00

        2       165.00    165.00
        1        12.00      3.60
        5       464.00    431.50

      115     13630.10  11970.40


       39      4791.00   4061.10

10.11.1 Tuesday, September 20, 2022
The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: cxchelp@cfa.harvard.edu Smithsonian Institution, Copyright © 1998-. All rights reserved.