Observation information
- date-obs: 2025-08-18
- time-obs: 11:13:23.889600000
- date-end: 2025-08-18
- time-end: 13:24:39.867700000
- obs_id: A14_002T07_9000006498
- exposure: 4848.15682924
- sourceid: M31 Field No. 9
- observer: dleahy
- ra_pnt: 11.71958
- dec_pnt: 42.20345
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_002T07_9000006498_53499cztM0_level2.fits
| modeM0/AS1A14_002T07_9000006498_53499cztM0_level2_quad_clean.evt
|
| Size (bytes) | 766,800,000 | 94,901,760 |
| Size | 731.3 MB
| 90.5 MB
|
| Events in quadrant A | 9,312,789 | 545,453 |
| Events in quadrant B | 4,627,302 | 754,874 |
| Events in quadrant C | 9,506,348 | 489,668 |
| Events in quadrant D | 4,417,546 | 615,328 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32390 | 2 |
| B | 0 | 18096 | 3 |
| C | 0 | 32926 | 2 |
| D | 0 | 17503 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6726 | 1999 | 29.720488% |
| B | 6725 | 423 | 6.289963% |
| C | 6725 | 2125 | 31.598513% |
| D | 6725 | 275 | 4.089219% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7871 | 6727 | 1699 | 1699 | 21.59% | 25.26% |  |
| B | 7870 | 6726 | 115 | 115 | 1.46% | 1.71% |  |
| C | 7870 | 6726 | 1921 | 1921 | 24.41% | 28.56% |  |
| D | 7870 | 6726 | 193 | 193 | 2.45% | 2.87% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 3 | 63 | 4132674 | 23218.95 | 727 | 710 | 178.0 |
| A | 3 | 62 | 1350141 | 7582.92 | 727 | 710 | 178.0 |
| A | 15 | 174 | 809390 | 4544.26 | 727 | 710 | 178.0 |
| B | 4 | 206 | 812191 | 4893.15 | 779 | 750 | 165.8 |
| B | 4 | 171 | 245869 | 1478.12 | 779 | 750 | 165.8 |
| B | 10 | 28 | 151050 | 906.34 | 779 | 750 | 165.8 |
| C | 7 | 64 | 4718474 | 26024.97 | 667 | 661 | 181.3 |
| C | 14 | 246 | 680738 | 3751.52 | 667 | 661 | 181.3 |
| C | 15 | 182 | 426542 | 2349.29 | 667 | 661 | 181.3 |
| D | 3 | 12 | 443181 | 2063.38 | 765 | 731 | 214.4 |
| D | 2 | 120 | 421224 | 1960.99 | 765 | 731 | 214.4 |
| D | 1 | 0 | 179248 | 832.52 | 765 | 731 | 214.4 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |