OBSCAT data extracted 10/20/25

This page contains data for all observations (CAL + GO + GTO + DDT + TOO + CCT).

For each proposal cycle (AO stands for Announcement of Opportunity), there's a table showing, for each instrumet/grating combination, the number of obsids, the percentage of total obsids, the exposure time for those observations, and the percentage of the total time. The first column shows the AO number.

A plot of percentages by proposal number, vs. AO

A plot of percentages by exposure time, vs. AO

ao si grating obsids pct_obs time pct_time
27 ACIS-I HETG 0 0 0 0
27 ACIS-I LETG 0 0 0 0
27 ACIS-I NONE 7 37 130 37
27 ACIS-S HETG 0 0 0 0
27 ACIS-S LETG 0 0 0 0
27 ACIS-S NONE 10 53 191 54
27 HRC-I HETG 0 0 0 0
27 HRC-I LETG 0 0 0 0
27 HRC-I NONE 0 0 0 0
27 HRC-S HETG 0 0 0 0
27 HRC-S LETG 2 11 30 8.55
27 HRC-S NONE 0 0 0 0
27 total
19 100 351 100

ao si grating obsids pct_obs time pct_time
26 ACIS-I HETG 0 0 0 0
26 ACIS-I LETG 0 0 0 0
26 ACIS-I NONE 159 27 1760 22
26 ACIS-S HETG 57 9.58 1084 14
26 ACIS-S LETG 11 1.85 360 4.59
26 ACIS-S NONE 261 44 3679 47
26 HRC-I HETG 7 1.18 100 1.27
26 HRC-I LETG 1 0.17 2 0.03
26 HRC-I NONE 69 12 552 7.03
26 HRC-S HETG 0 0 0 0
26 HRC-S LETG 20 3.36 234 2.98
26 HRC-S NONE 10 1.68 78 0.99
26 total
595 100 7849 100

ao si grating obsids pct_obs time pct_time
25 ACIS-I HETG 0 0 0 0
25 ACIS-I LETG 0 0 0 0
25 ACIS-I NONE 393 33 6833 38
25 ACIS-S HETG 53 4.47 1019 5.61
25 ACIS-S LETG 16 1.35 420 2.31
25 ACIS-S NONE 508 43 8013 44
25 HRC-I HETG 3 0.25 34 0.19
25 HRC-I LETG 2 0.17 12 0.07
25 HRC-I NONE 161 14 1281 7.05
25 HRC-S HETG 0 0 0 0
25 HRC-S LETG 23 1.94 277 1.53
25 HRC-S NONE 26 2.19 270 1.49
25 total
1185 100 18158 100

ao si grating obsids pct_obs time pct_time
24 ACIS-I HETG 0 0 0 0
24 ACIS-I LETG 0 0 0 0
24 ACIS-I NONE 488 40 7796 40
24 ACIS-S HETG 84 6.86 1791 9.13
24 ACIS-S LETG 23 1.88 420 2.14
24 ACIS-S NONE 568 46 9078 46
24 HRC-I HETG 0 0 0 0
24 HRC-I LETG 0 0 0 0
24 HRC-I NONE 40 3.27 357 1.82
24 HRC-S HETG 0 0 0 0
24 HRC-S LETG 1 0.08 4.3 0.02
24 HRC-S NONE 21 1.71 175 0.89
24 total
1225 100 19620 100

ao si grating obsids pct_obs time pct_time
23 ACIS-I HETG 0 0 0 0
23 ACIS-I LETG 0 0 0 0
23 ACIS-I NONE 378 29 6656 32
23 ACIS-S HETG 89 6.85 1972 9.60
23 ACIS-S LETG 22 1.69 450 2.19
23 ACIS-S NONE 672 52 10337 50
23 HRC-I HETG 0 0 0 0
23 HRC-I LETG 4 0.31 8 0.04
23 HRC-I NONE 106 8.16 806 3.92
23 HRC-S HETG 0 0 0 0
23 HRC-S LETG 16 1.23 217 1.06
23 HRC-S NONE 12 0.92 97 0.47
23 total
1299 100 20544 100

ao si grating obsids pct_obs time pct_time
22 ACIS-I HETG 0 0 0 0
22 ACIS-I LETG 0 0 0 0
22 ACIS-I NONE 695 41 8565 31
22 ACIS-S HETG 145 8.54 3359 12
22 ACIS-S LETG 22 1.30 420 1.52
22 ACIS-S NONE 649 38 12718 46
22 HRC-I HETG 0 0 0 0
22 HRC-I LETG 3 0.18 34 0.12
22 HRC-I NONE 96 5.66 1033 3.73
22 HRC-S HETG 0 0 0 0
22 HRC-S LETG 58 3.42 1062 3.83
22 HRC-S NONE 29 1.71 523 1.89
22 total
1697 100 27714 100

ao si grating obsids pct_obs time pct_time
21 ACIS-I HETG 0 0 0 0
21 ACIS-I LETG 0 0 0 0
21 ACIS-I NONE 183 21 5033 24
21 ACIS-S HETG 141 16 3978 19
21 ACIS-S LETG 16 1.82 420 2.01
21 ACIS-S NONE 342 39 8293 40
21 HRC-I HETG 1 0.11 15 0.07
21 HRC-I LETG 4 0.45 77.5 0.37
21 HRC-I NONE 92 10 897 4.28
21 HRC-S HETG 0 0 0 0
21 HRC-S LETG 88 10 2178 10
21 HRC-S NONE 13 1.48 54.6 0.26
21 total
880 100 20947 100

ao si grating obsids pct_obs time pct_time
20 ACIS-I HETG 0 0 0 0
20 ACIS-I LETG 0 0 0 0
20 ACIS-I NONE 386 24 7176 25
20 ACIS-S HETG 94 5.95 2583 9.00
20 ACIS-S LETG 15 0.95 420 1.46
20 ACIS-S NONE 937 59 16644 58
20 HRC-I HETG 0 0 0 0
20 HRC-I LETG 2 0.13 4 0.01
20 HRC-I NONE 86 5.44 360 1.25
20 HRC-S HETG 0 0 0 0
20 HRC-S LETG 32 2.03 1357 4.73
20 HRC-S NONE 28 1.77 173 0.60
20 total
1580 100 28717 100

ao si grating obsids pct_obs time pct_time
19 ACIS-I HETG 0 0 0 0
19 ACIS-I LETG 0 0 0 0
19 ACIS-I NONE 289 31 7703 36
19 ACIS-S HETG 111 12 3596 17
19 ACIS-S LETG 14 1.49 420 1.95
19 ACIS-S NONE 443 47 8772 41
19 HRC-I HETG 3 0.32 117 0.54
19 HRC-I LETG 2 0.21 4 0.02
19 HRC-I NONE 33 3.51 297 1.38
19 HRC-S HETG 0 0 0 0
19 HRC-S LETG 14 1.49 490 2.28
19 HRC-S NONE 31 3.30 89 0.41
19 total
940 100 21487 100

ao si grating obsids pct_obs time pct_time
18 ACIS-I HETG 0 0 0 0
18 ACIS-I LETG 0 0 0 0
18 ACIS-I NONE 231 24 6084 28
18 ACIS-S HETG 63 6.58 2050 9.37
18 ACIS-S LETG 12 1.25 540 2.47
18 ACIS-S NONE 545 57 11640 53
18 HRC-I HETG 1 0.10 20 0.09
18 HRC-I LETG 3 0.31 6 0.03
18 HRC-I NONE 38 3.97 361 1.65
18 HRC-S HETG 0 0 0 0
18 HRC-S LETG 38 3.97 1130 5.16
18 HRC-S NONE 27 2.82 59 0.27
18 total
958 100 21891 100

ao si grating obsids pct_obs time pct_time
17 ACIS-I HETG 0 0 0 0
17 ACIS-I LETG 0 0 0 0
17 ACIS-I NONE 293 34 7405 35
17 ACIS-S HETG 90 10 3668 18
17 ACIS-S LETG 8 0.92 272 1.30
17 ACIS-S NONE 390 45 8414 40
17 HRC-I HETG 0 0 0 0
17 HRC-I LETG 2 0.23 6 0.03
17 HRC-I NONE 46 5.26 635 3.03
17 HRC-S HETG 0 0 0 0
17 HRC-S LETG 19 2.17 510 2.43
17 HRC-S NONE 26 2.97 43 0.21
17 total
874 100 20953 100

ao si grating obsids pct_obs time pct_time
16 ACIS-I HETG 0 0 0 0
16 ACIS-I LETG 0 0 0 0
16 ACIS-I NONE 401 45 12383 48
16 ACIS-S HETG 67 7.48 3397 13
16 ACIS-S LETG 5 0.56 250 0.98
16 ACIS-S NONE 349 39 8923 35
16 HRC-I HETG 0 0 0 0
16 HRC-I LETG 1 0.11 2 0.01
16 HRC-I NONE 34 3.79 202 0.79
16 HRC-S HETG 0 0 0 0
16 HRC-S LETG 9 1.00 300 1.17
16 HRC-S NONE 30 3.35 81.8 0.32
16 total
896 100 25539 100

ao si grating obsids pct_obs time pct_time
15 ACIS-I HETG 0 0 0 0
15 ACIS-I LETG 0 0 0 0
15 ACIS-I NONE 269 35 9903 41
15 ACIS-S HETG 59 7.67 3334 14
15 ACIS-S LETG 23 2.99 909 3.78
15 ACIS-S NONE 332 43 8724 36
15 HRC-I HETG 0 0 0 0
15 HRC-I LETG 2 0.26 7 0.03
15 HRC-I NONE 37 4.81 344 1.43
15 HRC-S HETG 0 0 0 0
15 HRC-S LETG 20 2.60 770 3.20
15 HRC-S NONE 27 3.51 39 0.16
15 total
769 100 24030 100

ao si grating obsids pct_obs time pct_time
14 ACIS-I HETG 0 0 0 0
14 ACIS-I LETG 0 0 0 0
14 ACIS-I NONE 412 41 12889 46
14 ACIS-S HETG 49 4.82 3165 11
14 ACIS-S LETG 11 1.08 230 0.83
14 ACIS-S NONE 417 41 10372 37
14 HRC-I HETG 0 0 0 0
14 HRC-I LETG 1 0.10 2 0.01
14 HRC-I NONE 59 5.80 433 1.55
14 HRC-S HETG 0 0 0 0
14 HRC-S LETG 19 1.87 597 2.14
14 HRC-S NONE 49 4.82 160 0.58
14 total
1017 100 27849 100

ao si grating obsids pct_obs time pct_time
13 ACIS-I HETG 0 0 0 0
13 ACIS-I LETG 0 0 0 0
13 ACIS-I NONE 379 38 11884 40
13 ACIS-S HETG 82 8.18 5626 19
13 ACIS-S LETG 4 0.40 190 0.64
13 ACIS-S NONE 445 44 10636 36
13 HRC-I HETG 1 0.10 1 0
13 HRC-I LETG 1 0.10 2 0.01
13 HRC-I NONE 49 4.89 598 2.03
13 HRC-S HETG 0 0 0 0
13 HRC-S LETG 10 1.00 523 1.77
13 HRC-S NONE 32 3.19 62 0.21
13 total
1003 100 29522 100

ao si grating obsids pct_obs time pct_time
12 ACIS-I HETG 0 0 0 0
12 ACIS-I LETG 0 0 0 0
12 ACIS-I NONE 258 28 6258 26
12 ACIS-S HETG 62 6.71 3029 13
12 ACIS-S LETG 17 1.84 930 3.89
12 ACIS-S NONE 486 53 11993 50
12 HRC-I HETG 0 0 0 0
12 HRC-I LETG 1 0.11 2 0.01
12 HRC-I NONE 53 5.74 536 2.24
12 HRC-S HETG 0 0 0 0
12 HRC-S LETG 20 2.16 1103 4.62
12 HRC-S NONE 27 2.92 30 0.13
12 total
924 100 23880 100

ao si grating obsids pct_obs time pct_time
11 ACIS-I HETG 0 0 0 0
11 ACIS-I LETG 6 0.64 120 0.59
11 ACIS-I NONE 237 25 6744 33
11 ACIS-S HETG 50 5.37 1849 9.11
11 ACIS-S LETG 9 0.97 225 1.11
11 ACIS-S NONE 524 56 9993 49
11 HRC-I HETG 0 0 0 0
11 HRC-I LETG 1 0.11 2 0.01
11 HRC-I NONE 44 4.73 429 2.11
11 HRC-S HETG 0 0 0 0
11 HRC-S LETG 21 2.26 895 4.41
11 HRC-S NONE 39 4.19 45 0.22
11 total
931 100 20301 100

ao si grating obsids pct_obs time pct_time
10 ACIS-I HETG 0 0 0 0
10 ACIS-I LETG 0 0 0 0
10 ACIS-I NONE 234 28 5202 27
10 ACIS-S HETG 92 11 3511 18
10 ACIS-S LETG 9 1.07 407 2.10
10 ACIS-S NONE 403 48 8626 44
10 HRC-I HETG 0 0 0 0
10 HRC-I LETG 1 0.12 2 0.01
10 HRC-I NONE 42 4.99 242 1.25
10 HRC-S HETG 0 0 0 0
10 HRC-S LETG 21 2.49 850 4.38
10 HRC-S NONE 40 4.75 551 2.84
10 total
842 100 19391 100