Observation information
- date-obs: 2025-08-18
- time-obs: 16:29:36.837600000
- date-end: 2025-08-18
- time-end: 18:33:04.818400000
- obs_id: A14_002T07_9000006498
- exposure: 1804.92655993
- 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_53502cztM0_level2.fits
| modeM0/AS1A14_002T07_9000006498_53502cztM0_level2_quad_clean.evt
|
| Size (bytes) | 929,669,760 | 75,487,680 |
| Size | 886.6 MB
| 72.0 MB
|
| Events in quadrant A | 9,375,734 | 481,062 |
| Events in quadrant B | 6,520,531 | 597,311 |
| Events in quadrant C | 14,691,870 | 167,319 |
| Events in quadrant D | 3,314,024 | 578,815 |
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 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32380 | 1 |
| B | 0 | 23836 | 1 |
| C | 0 | 48158 | 1 |
| D | 0 | 14605 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6608 | 2022 | 30.599274% |
| B | 6608 | 1196 | 18.099274% |
| C | 6608 | 5042 | 76.301453% |
| D | 6609 | 57 | 0.862460% |
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 | 7408 | 6609 | 1799 | 1799 | 24.28% | 27.22% |  |
| B | 7408 | 6609 | 910 | 910 | 12.28% | 13.77% |  |
| C | 7408 | 6609 | 4508 | 4508 | 60.85% | 68.21% |  |
| D | 7409 | 6610 | 46 | 46 | 0.62% | 0.70% |  |
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 | 5034276 | 32186.42 | 630 | 615 | 156.4 |
| A | 3 | 62 | 1159566 | 7410.61 | 630 | 615 | 156.4 |
| A | 15 | 174 | 679253 | 4339.37 | 630 | 615 | 156.4 |
| B | 4 | 206 | 3271588 | 23117.91 | 657 | 633 | 141.5 |
| B | 4 | 171 | 267841 | 1888.53 | 657 | 633 | 141.5 |
| B | 10 | 28 | 81525 | 571.72 | 657 | 633 | 141.5 |
| C | 7 | 64 | 9682274 | 91016.55 | 388 | 382 | 106.4 |
| C | 1 | 241 | 1055136 | 9915.43 | 388 | 382 | 106.4 |
| C | 12 | 254 | 899733 | 8454.53 | 388 | 382 | 106.4 |
| D | 3 | 12 | 193349 | 978.15 | 700 | 671 | 197.0 |
| D | 8 | 208 | 97669 | 492.42 | 700 | 671 | 197.0 |
| D | 1 | 0 | 93681 | 472.17 | 700 | 671 | 197.0 |
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 |  |