Chandra X-Ray Observatory (CXC)

Cycle 21 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              301     980    75     36949.66  36949.66
GTO/TOO           1       1     0       300.00     30.00
LP               45     260    14     26745.86  26745.86
TOO              68     115    23      7567.20   3612.18
TOO/LP            3       6     1      2800.00   1396.00
VLP               8      23     2     14810.00  14810.00
ARCHIVE          58       0     0      4608.59      0.00
THEORY           32       0     0      2336.05      0.00
                ---    ----   ---    --------- ---------
                516    1385   115     89172.72  83543.70
                 Approved 
#Prop   #Tgts  #TC=Y    AppTime    w/Prob Units
-------------------------------------------------
  95     189    27      9976.40   9976.40  ksec
   1       1     0       300.00     30.00  ksec
   5      31     0      2754.00   2754.00  ksec
  38      47     8      3306.20   1335.73  ksec
   1       1     0       400.00    100.00  ksec
   2       2     0      2650.00   2650.00  ksec
  17       0     0      1058.70      0.00  1000 US dollars
   9       0     0       604.75      0.00  1000 US dollars
 ---    ----   ---    --------- ---------
 168     271    35     19386.60  16846.13

Multicycle Proposals
                             Requested  
Type           #Prop  Cycle 21  Cycle 22  Cycle 23 
--------------------------------------------------
GO                8    376.00    327.00    370.00
LP                1    400.00     70.00      0.00
TOO               2    140.00     80.00     30.00
VLP               2   1410.00   1410.00   1410.00
              ----- --------- --------- ---------
                 13   2326.00   1887.00   1810.00 
               Approved  
 #Prop  Cycle 21  Cycle 22  Cycle 23 
------------------------------------
     3    165.00     70.00     75.00

     1     90.00     30.00     30.00

 ----- --------- --------- ---------
     4    255.00    100.00    105.00

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

                                                    Requested 
Category                                   #Prop   #Tgts     ReqTime     w/Prob
-------------------------------------------------------------------------------
SOLAR SYSTEM AND EXOPLANETS                    9      25       741.00    741.00
STARS AND WD                                  59     155      8206.73   8007.23
WD BINARIES AND CV                            13      22       906.00    720.30
BH AND NS BINARIES                            65      97      8118.00   6610.43
SN, SNR AND ISOLATED NS                       76     118      8510.00   7620.40
GRAVITATIONAL WAVE EVENT                       6       8      1830.00    865.00
NORMAL GALAXIES: DIFFUSE EMISSION             20      20      3985.00   3958.00
NORMAL GALAXIES: X-RAY POPULATIONS            28     115      7279.00   7279.00
ACTIVE GALAXIES AND QUASARS                  149     607     26096.39  24364.04
CLUSTERS OF GALAXIES                          72     175     17476.60  17476.60
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS    12      16      4389.00   4334.00
GALACTIC DIFFUSE EMISSION AND SURVEYS          7      27      1635.00   1567.70
                                             ---    ----    --------- ---------
                                             516    1385     89172.72  83543.70
           Approved 
  #Prop   #Tgts    AppTime    w/Prob
  ----------------------------------
    2       7        85.00     85.00
   25      40      4272.50   4109.00
    5       3       369.00    369.00
   30      36      2077.00    961.48
   29      26      2688.00   2332.20
    3       3       510.00    263.00
    4       3      1130.00   1103.00
    7      42      1145.00   1145.00
   41      89      4515.10   3950.75
   14      19      2120.00   2120.00
    4       1       360.00    360.00
    4       2       115.00     47.70
  ---    ----     --------  --------
  168     271     19386.60  16846.13

Multicycle Proposals
                                                         Requested  
Category                                   #Prop  Cycle 21  Cycle 22  Cycle 23 
------------------------------------------------------------------------------
ACTIVE GALAXIES AND QUASARS                    2    650.00    650.00    600.00
BH AND NS BINARIES                             4   1350.00    970.00    910.00
GRAVITATIONAL WAVE EVENT                       1    100.00      0.00    100.00
NORMAL GALAXIES: X-RAY POPULATIONS             1     30.00     30.00     30.00
SN, SNR AND ISOLATED NS                        2     95.00    100.00    105.00
SOLAR SYSTEM AND EXOPLANETS                    1     36.00     72.00      0.00
STARS AND WD                                   2     65.00     65.00     65.00
                                           ----- --------- --------- ---------
                                              13   2326.00   1887.00   1810.00 
              Approved  
#Prop  Cycle 21  Cycle 22  Cycle 23 
-----------------------------------

    1     90.00     30.00     30.00 
    1    100.00      0.00      0.00 

    1     45.00     50.00     55.00 

    1     20.00     20.00     20.00 
  --- --------- --------- ---------
    4    255.00    100.00    105.00

3. Targets,Exposure Time by Detector

                                Requested
Detector  Grating    #Tgts      Time    w/Prob
----------------------------------------------
ACIS-I    NONE         257  26375.43  26315.93
ACIS-S    HETG          46  15001.00  13219.05
ACIS-S    LETG           1    400.00    400.00
ACIS-S    NONE        1018  42762.29  39496.72
HRC-I     NONE          35   1694.00   1668.00
HRC-S     LETG          12   2414.00   1918.00
HRC-S     NONE          16    526.00    526.00
                      ---- --------- ---------
                      1385  89172.72  83543.70
            Approved
 #Tgts      Time    w/Prob
--------------------------
    34   3910.00   3850.50
    20   4006.00   3110.35
     1    400.00    400.00
   192   8817.60   7573.28
    14    497.00    496.00
     6   1716.00   1376.00
     4     40.00     40.00
  ----  --------  --------
   271  19386.60  16846.13

4. Targets by Exposure Time Range

            Requested
Time            #Tgts
---------------------
   0>=T<2           17
   2>=T<4          131
   4>=T<8           88
   8>=T<16         306
  16>=T<32         326
  32>=T<64         224
  64>=T<128        157
 128>=T<400         87
 400>=T<1000        42
1000>=T<10000        7
      Approved
         #Tgts
         -----
             4
             1
             8
            47
            90
            41
            45
            28
             4
             3

5. Proposals by Exposure Time Range

            Requested
Time            #Prop
---------------------
   0>=T<2            0
   2>=T<4            1
   4>=T<8            3
   8>=T<16           5
  16>=T<32          27
  32>=T<64          71
  64>=T<128        127
 128>=T<400        134
 400>=T<1000        46
1000>=T<10000       12
      Approved
         #Prop
         -----
             0
             1
             2
             4
            19
            22
            45
            41
             5
             3

6. Number of Proposals per P.I.

   Requested
#Prop   #P.I.
-------------
  1       296
  2        75
  3        11
  4         5
  5         1
  6         2
 Approved
     #P.I.
 ---------
     134
      14
       2



7. Proposals by Country

                       Requested
Country         #Prop       Time    w/Prob
------------------------------------------
ARGENTINA         1        44.00     44.00
AUSTRALIA         1        55.00     33.00
BULGARIA          1        40.00     40.00
CANADA            7      1262.00   1224.50
CHILE             3       275.00    275.00
CHINA             5       425.00    410.20
FRANCE            5       442.00    316.00
GERMANY          17      2771.00   2667.00
GREECE            2       300.00    300.00
INDIA             5       572.00    544.80
ISRAEL            1      1800.00   1080.00
ITALY            29      8201.20   8022.30
JAPAN             6       546.00    448.00
KOREA, SOUTH      4       200.00    200.00
MEXICO            1       350.00    350.00
NETHERLANDS      12      2033.00   1838.00
RUSSIA            3       230.00    230.00
SERBIA            1       125.00    125.00
SOUTH AFRICA      1       150.00    150.00
SPAIN             2       285.00    225.50
SWITZERLAND       1        30.00     30.00
TAIWAN            3       326.00    326.00
TURKEY            1        50.00     20.00
UNITED ARAB EMI   2       162.00    152.40
UNITED KINGDOM   19      4725.00   4591.75
USA             383     63773.52  59900.25


Total Foreign   133     25399.20  23643.45
             Approved
    #Prop         Time     w/Prob
    -----------------------------



        3       305.00    267.50
        1       120.00    120.00
        2       100.00     85.20
        3       287.00    161.00
        7       481.00    406.00
        1       200.00    200.00
        2       240.00    240.00

        6      1849.20   1778.10
        3       150.00     62.00
        2        60.00     60.00

        4       488.00    347.00




        1        30.00     30.00


        2       162.00    152.40
        4       317.00    265.00
      127     14597.40  12671.93


       41      4789.20   4174.20

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DS10.8 Tuesday April 23 2019
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 © 1998-2018. All rights reserved.