Chandra X-Ray Observatory (CXC)

Cycle 18 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              330     944    97     37128.10  37128.10
GTO/TOO           1       1     0       300.00     30.00
LP               48     659    17     36379.50  36379.50
TOO              73     104    13      6697.40   2923.66
TOO/LP            1       2     0       510.00    382.50
ARCHIVE          56       0     0      3588.90      0.00
THEORY           38       0     0      2869.11      0.00
                ---    ----   ---    --------- ---------
                547    1710   127     81015.00  76843.76
                 Approved 
#Prop   #Tgts  #TC=Y    AppTime    w/Prob Units
-------------------------------------------------
  98     257    25     10223.80  10223.80  ksec
   1       1     0       300.00     30.00  ksec
  10     130     4      5704.00   5704.00  ksec
  35      48     4      3197.40   1217.66  ksec

  16       0     0      1060.92      0.00  1000 US dollars
   8       0     0       650.28      0.00  1000 US dollars
 ---    ----   ---    --------- ---------
 168     436    33     19425.20  17175.46

Multicycle Proposals
                             Requested  
Type           #Prop  Cycle 18  Cycle 19  Cycle 20 
--------------------------------------------------
GO                9    597.00    487.00    172.00
LP                5   1532.00   1237.00    742.00
TOO               1     90.00     30.00     30.00
TOO/LP            1    270.00    240.00      0.00
              ----- --------- --------- ---------
                 16   2489.00   1994.00    944.00 
               Approved  
 #Prop  Cycle 18  Cycle 19  Cycle 20 
------------------------------------
     4    326.00    266.00    116.00
     1    590.00    295.00      0.00
     1     90.00     30.00     30.00

 ----- --------- --------- ---------
     6   1006.00    591.00    146.00

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

                                                    Requested 
Category                                   #Prop   #Tgts     ReqTime     w/Prob
-------------------------------------------------------------------------------
SOLAR SYSTEM                                   2       2       167.00    147.00
STARS AND WD                                  84     216     12025.00  11927.25
WD BINARIES AND CV                            17      22      1826.00   1760.00
BH AND NS BINARIES                            74     115      6439.00   4490.63
SN, SNR AND ISOLATED NS                       91     177      9445.50   8659.50
NORMAL GALAXIES: DIFFUSE EMISSION             20      51      2842.00   2842.00
NORMAL GALAXIES: X-RAY POPULATIONS            28     156      5066.30   5066.30
ACTIVE GALAXIES AND QUASARS                  135     745     18571.76  17524.14
CLUSTERS OF GALAXIES                          80     208     16194.44  16194.44
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS     9       9      6750.00   6597.00
GALACTIC DIFFUSE EMISSION AND SURVEYS          7       9      1688.00   1635.50
                                             ---    ----    --------- ---------
                                             547    1710     81015.00  76843.76
           Approved 
  #Prop   #Tgts    AppTime    w/Prob
  ----------------------------------
    0       0         0.00      0.00
   27      54      2289.00   2191.25
    4       7       550.00    508.00
   24      48      1873.00    977.83
   32      47      2967.00   2695.30
    7      22       412.00    412.00
    9     117      1783.50   1783.50
   39     102      4753.70   4016.08
   20      30      2847.00   2847.00
    2       2      1195.00   1042.00
    4       7       755.00    702.50
  ---    ----     --------  --------
  168     436     19425.20  17175.46

Multicycle Proposals
                                                         Requested  
Category                                   #Prop  Cycle 18  Cycle 19  Cycle 20 
------------------------------------------------------------------------------
ACTIVE GALAXIES AND QUASARS                    5   1040.00    730.00     30.00
BH AND NS BINARIES                             2    129.00     56.00     30.00
NORMAL GALAXIES: X-RAY POPULATIONS             3    640.00    640.00    550.00
SN, SNR AND ISOLATED NS                        4    436.00    376.00    116.00
STARS AND WD                                   1     52.00      0.00     26.00
WD BINARIES AND CV                             1    192.00    192.00    192.00
                                           ----- --------- --------- ---------
                                              16   2489.00   1994.00    944.00 
              Approved  
#Prop  Cycle 18  Cycle 19  Cycle 20 
-----------------------------------
    2    680.00    385.00      0.00 
    1     90.00     30.00     30.00 

    3    236.00    176.00    116.00 


  --- --------- --------- ---------
    6   1006.00    591.00    146.00

3. Targets,Exposure Time by Detector

                                Requested
Detector  Grating    #Tgts      Time    w/Prob
----------------------------------------------
ACIS-I    NONE         341  27048.44  26867.94
ACIS-S    HETG          46   8235.00   6676.65
ACIS-S    LETG           3    415.00    297.00
ACIS-S    NONE        1285  41781.56  40009.67
HRC-I     NONE          19   1050.00   1036.50
HRC-S     LETG          13   2370.00   1870.50
HRC-S     NONE           3    115.00     85.50
                      ---- --------- ---------
                      1710  81015.00  76843.76
            Approved
 #Tgts      Time    w/Prob
--------------------------
    69   4571.00   4515.00
    17   2100.00   1312.15

   329  11342.20  10425.31
    11    152.00    138.50
    10   1260.00    784.50

  ----  --------  --------
   436  19425.20  17175.46

4. Targets by Exposure Time Range

            Requested
Time            #Tgts
---------------------
   0>=T<2           23
   2>=T<4          110
   4>=T<8          431
   8>=T<16         411
  16>=T<32         257
  32>=T<64         181
  64>=T<128        178
 128>=T<400         85
 400>=T<1000        25
1000>=T<10000        9
      Approved
         #Tgts
         -----
             6
            35
            35
           158
            58
            56
            47
            35
             4
             1

5. Proposals by Exposure Time Range

            Requested
Time            #Prop
---------------------
   0>=T<2            0
   2>=T<4            1
   4>=T<8            1
   8>=T<16          11
  16>=T<32          34
  32>=T<64          96
  64>=T<128        137
 128>=T<400        122
 400>=T<1000        40
1000>=T<10000       11
      Approved
         #Prop
         -----
             0
             1
             1
             3
            13
            34
            39
            42
            10
             1

6. Number of Proposals per P.I.

   Requested
#Prop   #P.I.
-------------
  1       279
  2        78
  3        18
  4         9
  5         3
  7         1
 Approved
     #P.I.
 ---------
     133
      13
       3



7. Proposals by Country

                       Requested
Country         #Prop       Time    w/Prob
------------------------------------------
AUSTRALIA         5       709.00    709.00
AUSTRIA           1       150.00    150.00
BELGIUM           1       405.00    405.00
BULGARIA          2       200.00    200.00
CANADA            8      1838.00   1566.80
CHILE             4       505.00    505.00
CHINA             3       180.00    180.00
FRANCE            5       567.00    436.50
GERMANY          18      3725.00   3104.50
GREECE            2        60.00     45.00
INDIA             6       600.00    596.00
ITALY            22      5377.00   5292.40
JAPAN            10       844.00    764.00
KOREA             1        60.00     60.00
MEXICO            4       240.00     87.00
NETHERLANDS       9       862.00    711.00
POLAND            2       145.00    145.00
RUSSIA            3        67.00     67.00
SOUTH AFRICA      1       195.00    195.00
SPAIN             5       986.00    935.00
SWITZERLAND       3       285.00    187.00
TAIWAN            3       194.00    194.00
TURKEY            2       240.00    224.00
UK               26      4453.00   4235.00
USA             401     58128.00  55849.56


Total Foreign   146     22887.00  20994.20
             Approved
    #Prop         Time     w/Prob
    -----------------------------
        3       619.00    619.00



        4       458.00    270.80
        1       300.00    300.00
        1       150.00    150.00
        3       267.00    136.50
        5       502.00    205.00

        2       130.00    126.00
        5       540.00    455.40
        1        20.00     16.00
        1        60.00     60.00
        1       170.00     17.00
        4       432.00    357.00

        2        47.00     47.00
        1       195.00    195.00
        2        95.00     52.50


        1        40.00     24.00
       13      1520.00   1477.00
      118     13880.20  12667.26


       50      5545.00   4508.20

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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.