MTA Monitoring Report 01/16/15 - 01/22/15

Archive of all weekly reports
Archive of monthly reports

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).

Average of ACIS-I CCDs (MnKa) slope: 1.680e-6 CTI/year (4.603e-9 CTI/day)
Detrended slope: 1.524e-6 CTI/year (4.175e-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.

Previously Unknown Bad Pixels                    
Current Warm Pixels (153,205) (910,239) (726,537) (811,637) (21,95)       (335,412)    
Flickering Warm Pixels (143,700) (692,141) (427,125) (802,665)       (607,281) (357,303) (369,376) (669,577) (263,317) (161,206) (341,427)     (182,474) (197,241) (881,53)  
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, 3 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.


New violations or new extrema are shown in blue cells.

MSID 01/16/15 01/17/15 01/18/15 01/19/15 01/20/15 01/21/15 01/22/15 yellow limits
red limits
Units Description
RSRFALV 185.00 185.00 185.00 185.00 185.00 185.00 185.00 (172.0)
V #Range switch setting (2RSRFALV)
OHRTHR27 297.37 297.33 297.34 297.34 297.34 297.34 297.33 (295.48)
OHRTHR42 294.72 294.71 294.69 294.68 294.64 294.66 294.66 (292.15)
OHRTHR43 294.88 294.86 294.81 294.74 294.56 294.63 294.68 (291.59)


Recent Observations

16148 ACIS-01236 NONE A667 OK OK
16659 ACIS-456789 HETG HIP 101364 OK OK
15739 ACIS-35678 NONE T Aur OK OK
17578 ACIS-7 NONE M82 OK OK
16991 ACIS-23678 NONE NGC4144 OK OK
16147 ACIS-01236 NONE A961 OK OK
16239 ACIS-01236 NONE MACSJ1149.5+2223 OK OK
15702 ACIS-23678 NONE SDSS J101548.90+094649.7 OK OK
16360 ACIS-7 NONE Crab OK OK
16601 ACIS-23678 NONE GRB 130427A OK OK
16023 ACIS-367 NONE M82 OK OK
16272 ACIS-01237 NONE J235535.83-011444.1 OK OK
17490 ACIS-012367 NONE ZwCl 2341.1+0000 OK OK
17582 ACIS-01237 NONE CXOU J164043.5-463135 OK OK
17193 ACIS-01236 NONE Abell 3411 OK OK


This week's focus is HRC.

Last reported on Oct 23 (2014).

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.

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