Observation information
- date-obs: 2025-08-19
- time-obs: 08:04:48.686200000
- date-end: 2025-08-19
- time-end: 10:13:35.664400000
- obs_id: A14_002T07_9000006498
- exposure: 3859.60101879
- 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_53512cztM0_level2.fits
| modeM0/AS1A14_002T07_9000006498_53512cztM0_level2_quad_clean.evt
|
| Size (bytes) | 828,619,200 | 85,536,000 |
| Size | 790.2 MB
| 81.6 MB
|
| Events in quadrant A | 11,320,101 | 426,304 |
| Events in quadrant B | 3,505,988 | 728,241 |
| Events in quadrant C | 11,386,492 | 381,670 |
| Events in quadrant D | 3,945,025 | 589,249 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 38257 | 4 |
| B | 0 | 14827 | 1 |
| C | 0 | 38500 | 1 |
| D | 0 | 16306 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6656 | 2930 | 44.020433% |
| B | 6657 | 140 | 2.103049% |
| C | 6657 | 3050 | 45.816434% |
| D | 6657 | 220 | 3.304792% |
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 | 7726 | 6656 | 2452 | 2452 | 31.74% | 36.84% |  |
| B | 7727 | 6658 | 14 | 14 | 0.18% | 0.21% |  |
| C | 7727 | 6658 | 2580 | 2580 | 33.39% | 38.75% |  |
| D | 7727 | 6658 | 149 | 149 | 1.93% | 2.24% |  |
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 | 4335820 | 28090.0 | 629 | 616 | 154.3 |
| A | 3 | 62 | 3467841 | 22465.92 | 629 | 616 | 154.3 |
| A | 15 | 174 | 974208 | 6308.4 | 629 | 616 | 154.3 |
| B | 5 | 185 | 131640 | 815.75 | 745 | 719 | 160.5 |
| B | 2 | 249 | 98364 | 608.41 | 745 | 719 | 160.5 |
| B | 4 | 171 | 81548 | 503.63 | 745 | 719 | 160.5 |
| C | 7 | 64 | 5257698 | 34526.85 | 556 | 552 | 152.3 |
| C | 12 | 254 | 1718843 | 11285.05 | 556 | 552 | 152.3 |
| C | 1 | 241 | 1680885 | 11035.76 | 556 | 552 | 152.3 |
| D | 2 | 153 | 495913 | 2439.68 | 723 | 693 | 203.0 |
| D | 3 | 12 | 258448 | 1269.82 | 723 | 693 | 203.0 |
| D | 1 | 0 | 56538 | 275.12 | 723 | 693 | 203.0 |
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 |  |