12.4 COS Monitoring Programs

An overview of the COS monitoring programs is given in Table 12.2 along with the ID numbers of completed programs. Table 12.3 lists COS contingency programs. Details on special calibration programs that were undertaken in a particular Cycle are given the appropriate subsection below.
 

Table 12.2: COS Monitoring Calibration Program.  

TitleAccuracy AchievedProgram IDsProducts

NUV Monitors

NUV MAMA Fold Distribution

<5% at the location of the peak of the fold distribution

11891 (Cycle 17)
12419 (Cycle 18)
12723 (Cycle 19)
13128 (Cycle 20)
13531 (Cycle 21)
13976 (Cycle 22)
14444 (Cycle 23)
14526 (Cycle 24)
14943 (Cycle 25)
15539 (Cycle 26)
15777 (Cycle 27)

ISR

NUV Dark Monitor

<0.2% in the global dark rate uncertainty

11894 (Cycle 17)
12420 (Cycle 18)
12720 (Cycle 19)
13126 (Cycle 20)
13528 (Cycle 21)
13974 (Cycle 22)
14442 (Cycle 23)
14521 (Cycle 24)
14942 (Cycle 25)
15538 (Cycle 26)
15776 (Cycle 27)

ISR

NUV Spectroscopic Sensitivity Monitor

S/N ∼ 30 at λcen

11896 (Cycle 17)
12421 (Cycle 18)
12719 (Cycle 19)
13125 (Cycle 20)
13527 (Cycle 21)
13973 (Cycle 22)
14441 (Cycle 23)
14858 (Cycle 24)
15387 (Cycle 25)
15540 (Cycle 26)
15778 (Cycle 27)

COS ISR 2017-13
Reference File

NUV Imaging Sensitivity

S/N ∼ 60, observed to a predicted countrate accuracy of 0.1%

11899 (Cycle 17)

ISR
Reference File

NUV Internal/External Wavelength Scale Monitor

1.7–3.7 pixels in wavelength scale accuracy

11900 (Cycle 17)
12422 (Cycle 18)
12722 (Cycle 19)
13127 (Cycle 20)
13529 (Cycle 21)
13975 (Cycle 22)
14443 (Cycle 23)
14859 (Cycle 24)
15388 (Cycle 25)
15541 (Cycle 26)
15779 (Cycle 27)

ISR
Reference File

NUV Flat Monitor

S/N = 20–25 per 3.3 pixel element

12721 (Cycle 19)

ISR

COS ACQ/IMAGE Performance Monitoring

WCA–PSA offsets to <0.5 pixels

13124 (Cycle 20)
13526 (Cycle 21)
13972 (Cycle 22)
14440 (Cycle 23)
14857 (Cycle 24)


 

NUV Target Acquisition Monitor

Offsets to <0.5 pixels

15389 (Cycle 25)
15542 (Cycle 26)
15780 (Cycle 27)


 

FUV Monitors

FUV Detector Gain Maps

0.1 pulse height bin

13525 (Cycle 21)
13970 (Cycle 22)
14439 (Cycle 23)
14519 (Cycle 24)
14941 (Cycle 25)
15534 (Cycle 26)
15772 (Cycle 27)

ISR

FUV Dark Monitor

Rate < 106 count/pixel/s
0.1% in global dark rate uncertainty

11895 (Cycle 17)
12423 (Cycle 18)
12716 (Cycle 19)
13121 (Cycle 20)
13521 (Cycle 21)
13968 (Cycle 22)
14436 (Cycle 23)
14520 (Cycle 24)
14940 (Cycle 25)
15533 (Cycle 26)
15771 (Cycle 27)

ISR

FUV Spectroscopic Sensitivity Monitor

S/N = 30 at λcen

11897 (Cycle 17)
12424 (Cycle 18)
12715 (Cycle 19)
13119 (Cycle 20)
13520 (Cycle 21)
13967 (Cycle 22)
14435 (Cycle 23)
14854 (Cycle 24)
15384 (Cycle 25)
15535 (Cycle 26)
15773 (Cycle 27)

COS ISR 2017-10
Reference File

FUV Internal/External Wavelength Monitor

Wavelength zeropoint accuracies:
G130M: 5.7–7.5 pixels
G160M: 5.8–7.2 pixels
G140L: 7.5–12.5 pixels

11997 (Cycle 17)
12425 (Cycle 18)
12717 (Cycle 19)
13122 (Cycle 20)
13522 (Cycle 21)
13969 (Cycle 22)
14437 (Cycle 23)
14855 (Cycle 24)
15385 (Cycle 25)
15536 (Cycle 26)
15774 (Cycle 27)

Calibration Workshop Paper
ISR
Reference File

FUV Target Acquisition Monitor

Offsets to <0.5 pixels

15386 (Cycle 25)
15537 (Cycle 26)
15775 (Cycle 27)


 


Table 12.3: COS Contingency Programs.

TitleProgram IDs

NUV Detector Recovery after Anomalous Shutdown

11892 (Cycle 17)
12430 (Cycle 18)
12724 (Cycle 19)
13129 (Cycle 20)
13533 (Cycle 21)
13978 (Cycle 22)
14446 (Cycle 23)
14523 (Cycle 24)
14945 (Cycle 25)
15544 (Cycle 26)
15782 (Cycle 27)

FUV Detector Recovery after Anomalous Shutdown

11893 (Cycle 17)
12431 (Cycle 18)
12718 (Cycle 19)
13123 (Cycle 20)
13532 (Cycle 21)
13977 (Cycle 22)
14445 (Cycle 23)
14522 (Cycle 24)
14944 (Cycle 25)
15543 (Cycle 26)
15781 (Cycle 27)