Chandra X-Ray Observatory (CXC)

Cycle 20 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              307     883    68     40279.48  40279.48
GTO/TOO           1       1     0       300.00     30.00
LP               50     236     9     29580.10  29580.10
TOO              57     104     7      6368.70   3124.03
TOO/LP            3       6     1      1475.00   1055.60
VLP              13     548     1     20497.50  20497.50
ARCHIVE          67       0     0      5463.00      0.00
THEORY           29       0     0      2056.94      0.00
                ---    ----   ---    --------- ---------
                527    1778    86     98500.78  94566.71
                 Approved 
#Prop   #Tgts  #TC=Y    AppTime    w/Prob Units
-------------------------------------------------
  86     260    16     11240.46  11240.46  ksec
   1       1     0       300.00     30.00  ksec
   6      15     0      3911.20   3911.20  ksec
  39      59     5      3985.70   1747.03  ksec
   1       4     0       620.00    396.80  ksec

  15       0     0      1096.00      0.00  1000 US dollars
   9       0     0       642.00      0.00  1000 US dollars
 ---    ----   ---    --------- ---------
 157     339    21     20057.36  17325.49

Multicycle Proposals
                             Requested  
Type           #Prop  Cycle 20  Cycle 21  Cycle 22 
--------------------------------------------------
GO                7    700.00    600.00     60.00
LP                1    200.00    200.00      0.00
TOO               1     90.00     30.00     30.00
VLP               1    600.00    600.00    600.00
              ----- --------- --------- ---------
                 10   1590.00   1430.00    690.00 
               Approved  
 #Prop  Cycle 20  Cycle 21  Cycle 22 
------------------------------------
     6    505.00    440.00     55.00

     1     90.00     30.00     30.00

 ----- --------- --------- ---------
     7    595.00    470.00     85.00

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

                                                    Requested 
Category                                   #Prop   #Tgts     ReqTime     w/Prob
-------------------------------------------------------------------------------
SOLAR SYSTEM                                   2       2       150.00    141.00
STARS AND WD                                  73     140     11333.94  11229.44
WD BINARIES AND CV                            14      26      1553.00   1503.80
BH AND NS BINARIES                            72      98      6996.50   5495.58
SN, SNR AND ISOLATED NS                       86     173     12365.00  10977.10
NORMAL GALAXIES: DIFFUSE EMISSION             16      14      4433.00   4406.00
NORMAL GALAXIES: X-RAY POPULATIONS            31     103      6490.20   6490.20
ACTIVE GALAXIES AND QUASARS                  133     686     27141.44  26383.39
CLUSTERS OF GALAXIES                          76     178     20840.80  20840.80
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS    13      29      4781.40   4736.40
GALACTIC DIFFUSE EMISSION AND SURVEYS         11     329      2415.50   2363.00
                                             ---    ----    --------- ---------
                                             527    1778     98500.78  94566.71
           Approved 
  #Prop   #Tgts    AppTime    w/Prob
  ----------------------------------
    2       2       150.00    141.00
   22      36      2338.00   2233.50
    4      14       505.00    505.00
   31      44      2975.00   1724.18
   27      68      4291.50   3526.30
    6       5       635.00    608.00
   10       8       690.00    690.00
   31     115      4197.56   3719.71
   17      38      3125.30   3125.30
    5       8      1075.00   1030.00
    2       1        75.00     22.50
  ---    ----     --------  --------
  157     339     20057.36  17325.49

Multicycle Proposals
                                                         Requested  
Category                                   #Prop  Cycle 20  Cycle 21  Cycle 22 
------------------------------------------------------------------------------
ACTIVE GALAXIES AND QUASARS                    1    600.00    600.00    600.00
BH AND NS BINARIES                             2    145.00     45.00     45.00
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS     1    330.00    270.00      0.00
NORMAL GALAXIES: X-RAY POPULATIONS             2    120.00    120.00     30.00
SN, SNR AND ISOLATED NS                        2    230.00    230.00      0.00
STARS AND WD                                   2    165.00    165.00     15.00
                                           ----- --------- --------- ---------
                                              10   1590.00   1430.00    690.00 
              Approved  
#Prop  Cycle 20  Cycle 21  Cycle 22 
-----------------------------------

    2    100.00     35.00     40.00 
    1    330.00    270.00      0.00 
    2    120.00    120.00     30.00 
    1     30.00     30.00      0.00 
    1     15.00     15.00     15.00 
  --- --------- --------- ---------
    7    595.00    470.00     85.00

3. Targets,Exposure Time by Detector

                                Requested
Detector  Grating    #Tgts      Time    w/Prob
----------------------------------------------
ACIS-I    NONE         566  31407.74  31348.24
ACIS-S    HETG          44  10865.50   9711.30
ACIS-S    LETG           1    400.00    400.00
ACIS-S    NONE        1128  50255.14  47914.02
HRC-I     NONE          22   1337.40   1336.40
HRC-S     LETG          12   3570.00   3213.00
HRC-S     NONE           5    665.00    643.75
                      ---- --------- ---------
                      1778  98500.78  94566.71
            Approved
 #Tgts      Time    w/Prob
--------------------------
    88   4847.80   4788.30
    20   2543.00   1603.30

   221  11459.56  10065.39
     4    122.00    121.00
     5   1025.00    687.50
     1     60.00     60.00
  ----  --------  --------
   339  20057.36  17325.49

4. Targets by Exposure Time Range

            Requested
Time            #Tgts
---------------------
   0>=T<2            8
   2>=T<4          316
   4>=T<8          372
   8>=T<16         262
  16>=T<32         278
  32>=T<64         219
  64>=T<128        156
 128>=T<400        121
 400>=T<1000        34
1000>=T<10000       12
      Approved
         #Tgts
         -----
             5
            34
            24
            68
            67
            49
            48
            37
             5
             0

5. Proposals by Exposure Time Range

            Requested
Time            #Prop
---------------------
   0>=T<2            0
   2>=T<4            1
   4>=T<8            2
   8>=T<16           3
  16>=T<32          21
  32>=T<64          62
  64>=T<128        140
 128>=T<400        134
 400>=T<1000        51
1000>=T<10000       17
      Approved
         #Prop
         -----
             0
             2
             0
             3
            11
            22
            43
            43
             9
             0

6. Number of Proposals per P.I.

   Requested
#Prop   #P.I.
-------------
  1       305
  2        73
  3        18
  4         4
  5
  6         1
 Approved
     #P.I.
 ---------
     120
      13
       2

       1

7. Proposals by Country

                       Requested
Country         #Prop       Time    w/Prob
------------------------------------------
BELGIUM           2       570.00    570.00
BULGARIA          1       100.00    100.00
CANADA            7      1497.00   1420.20
CHINA             7       520.00    520.00
FRANCE            2       480.00    480.00
GERMANY          19      5623.30   5623.30
GREECE            2       414.40    414.40
INDIA             6       934.00    906.80
ISRAEL            1       450.00    270.00
ITALY            27      8210.00   8099.05
JAPAN            10      1320.00   1222.00
KOREA             1        85.00     85.00
MEXICO            1       400.00    400.00
NETHERLANDS      10      1230.00   1185.00
RUSSIA            1       130.00    130.00
SERBIA            1       125.00    125.00
SOUTH AFRICA      1       120.00    120.00
SPAIN             4       385.00    342.50
SWEDEN            2       350.00    350.00
SWITZERLAND       2       280.00    280.00
TAIWAN            1        83.00     83.00
TURKEY            2       200.00    180.00
UAE               1        24.00      9.00
UK               22      6482.53   6298.28
USA             394     68487.55  65353.18


Total Foreign   133     30013.23  29213.53
             Approved
    #Prop         Time     w/Prob
    -----------------------------

        1       100.00    100.00
        2       362.00    362.00


        6       386.00    386.00
        1       150.00    150.00


        6      1272.00   1182.30
        3       150.00    146.00


        5       480.00    435.00



        1        60.00     60.00



        1        50.00     30.00

        7      1392.00   1229.00
      124     15655.36  13245.19


       33      4402.00   4080.30

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10.6.3 Friday, April 27, 2018
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.