MTA Monitoring Report 12/19/14 - 12/25/14

Archive of all weekly reports
Archive of monthly reports


Radiation

Due to the high radiation (ACE p3 > 50000), SCS-107 was activated at ~356:04:52. Although the science run was ready to resume, SCS-107 was activated again manually at ~357:11:32. The science run was started fianlly at 358:18:59.

Detrended CTI

Although we prefer to quote CTI values of the cleanest data (FT <= -119.7 C, int time > 7000sec), the data that fulfills these conditions are getting rare. We now quote CTI based on temperature corrected data for Focal plane temperature <= -118.5 C).

The unit is now CTI/year not CTI/day.

Average of ACIS-I CCDs (MnKa) slope: 1.597e-6 CTI/year (4.375e-9 CTI/day)
Detrended slope: 1.528e-6 CTI/year (4.191e-9 CTI/day)

ACIS Warm Pixels

We display all bad pixels that have showed up in past, and, if any, previously unknown bad pixels appeared in the last 14 days. We also list hot pixels (defined as 1000 above the average of bias background). Warm columns 509-514 are probably due to boundaries.

New definitions of warm pixels and flickering pixels (May 15, 2014). If a pixel displays the level beyond a threshold for more than 70% of the time in the past two weeks, the pixel is categorized as a "warm" pixel. If a pixel is above the threshold more than 30% of time but less than 70% of the time in the past two weeks, the pixel is categorized as a "flickering" pixel.

 CCD0CCD1CCD2CCD3CCD4CCD5CCD6CCD7CCD8CCD9
Previously Unknown Bad Pixels                    
Current Warm Pixels     (726,537) (21,95)            
Flickering Warm Pixels (153,205) (692,141) (427,125) (910,239) (802,665) (526,66)     (669,577) (357,303) (369,376) (263,317) (367,511) (161,206) (341,427)   (335,412) (833,325) (197,241) (356,902) (881,53) (838,239) (139,109)  
Current Hot Pixels                    
Flickering Hot Pixels                    
Warm column candidates         884 510 512 1022   512 1022    
Flickering Warm Column Candidates                    

ACIS Focal Plane Temperature

For this period, 4 peaks are observed.

Weekly focal plane temperature with sun angle, earth angle, and altitude overplotted. Sun angle is the solar array angle, that is the angle between the sun and the optical axis (+X axis). The earth angle is the angle between earth and the ACIS radiator (+Z axis). Altitude varies from 34 kkm to 128 kkm.



Telemetry

New violations or new extrema are shown in blue cells.

MSID 12/19/14 12/20/14 12/21/14 12/22/14 12/23/14 12/24/14 12/25/14 yellow limits
(lower)
upper
red limits
(lower)
upper
Units Description
1DAHBCU 0.24             (-998)
0.20
(-999)
999
AMP #DA HEATER CURRENT B
1DAHBVO 3.35             (-998)
1.0
(-999)
999
V #DA HEATER VOLTAGE B
1DAHHBVO 27.61             (-998)
1.0
(-999)
999
V #DA HOUSING HEATER INPUT VOLTAGE B
OHRTHR27 297.33 297.32 297.34 297.35 297.34 297.34 297.32 (295.48)
297.15
(279.37)
307.15
K #RT 20 : PERISCOPE
OHRTHR42 294.64 294.52 294.64 294.69 294.68 294.66 294.53 (292.15)
294.37
(279.37)
307.15
K #RT 133: PERISCOPE
OHRTHR43 294.66 294.30 294.68 294.79 294.76 294.71 294.37 (291.59)
293.26
(279.37)
307.15
K #RT 134: PERISCOPE
3TSMXCET 273.29 270.79 275.78 270.79 270.79 273.29 270.79 (153.15)
263.15
(148.15)
353.15
K #-X TURTLE SHELL NR HRC CEA
3TSMXSPT 313.19 313.19 310.70 308.21 310.70 310.70 313.19 (203.15)
294.15
(148.15)
354.15
K #-X TURTLE SHELL NR ACIS SS


IRUs

Recent Observations

OBSID DETECTOR GRATING TARGET ANALYSIS ACA
15701 ACIS-45789 HETG Procyon OK OK
17056 ACIS-7 NONE M87 OK OK
16523 ACIS-01236 NONE MACSJ0416.1-2403 OK OK
16221 ACIS-56789 HETG 3C 120 OK OK
17002 ACIS-23678 NONE NGC7690 OK OK
17553 ACIS-7 NONE PG 2112+059 OK OK
16270 ACIS-01237 NONE J205740.76+005418.8 OK OK
17561 ACIS-012367 NONE 30 Doradus OK OK
17004 ACIS-23678 NONE ESO241-6 OK OK
16269 ACIS-01237 NONE J205449.61+004153.0 OK OK
16271 ACIS-01237 NONE J211824.24+002311.7 OK OK
16099 ACIS-23678 NONE MRC0131-367 OK OK
17107 ACIS-35678 NONE 3C190 OK OK
16996 ACIS-23678 NONE NGC4517 OK OK

Trending

This week's focus is HRMA Thermal.

Last reported on Oct 17 (2013).

Only the most interesting or representative msids are shown below. For a full listing choose the bulletted link.

Min/max envelopes in dark blue appear on the trending plots. The envelopes are 4th degree fits to the monthly minimum and maximum values for each MSID. The final polynomial form and binning are still being experimented with. We will soon add to the trending pages a report of the fits and predictions they give on future limit violations. The light blue curve is our original smoothing of all the data over 30 day moving boxcars. The green/yellow line is a linear fit to all the data; the break occurs at a limit change.








If you have any questions, please contact: swolk@head.cfa.harvard.edu