Observation information
- date-obs: 2025-08-16
- time-obs: 07:03:24.407400000
- date-end: 2025-08-16
- time-end: 09:21:12.383600000
- obs_id: A14_002T06_9000006496
- exposure: 5018.70921534
- sourceid: M31 Field No. 8
- observer: dleahy
- ra_pnt: 11.36333
- dec_pnt: 41.88303
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_002T06_9000006496_53466cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53466cztM0_level2_quad_clean.evt
|
| Size (bytes) | 757,992,960 | 91,039,680 |
| Size | 722.9 MB
| 86.8 MB
|
| Events in quadrant A | 9,227,525 | 492,310 |
| Events in quadrant B | 3,459,947 | 714,157 |
| Events in quadrant C | 8,778,078 | 496,613 |
| Events in quadrant D | 6,058,774 | 572,826 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32187 | 2 |
| B | 0 | 15170 | 2 |
| C | 0 | 30881 | 4 |
| D | 0 | 22764 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6901 | 2169 | 31.430228% |
| B | 6901 | 146 | 2.115635% |
| C | 6900 | 1674 | 24.260870% |
| D | 6900 | 410 | 5.942029% |
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 | 7846 | 6901 | 1736 | 1736 | 22.13% | 25.16% |  |
| B | 7846 | 6901 | 27 | 27 | 0.34% | 0.39% |  |
| C | 7844 | 6899 | 1519 | 1519 | 19.37% | 22.02% |  |
| D | 7845 | 6900 | 372 | 372 | 4.74% | 5.39% |  |
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 | 2567799 | 15707.96 | 661 | 643 | 163.4 |
| A | 3 | 62 | 2302392 | 14083.98 | 661 | 643 | 163.4 |
| A | 15 | 174 | 1583609 | 9685.88 | 661 | 643 | 163.4 |
| B | 2 | 249 | 195599 | 1222.43 | 746 | 720 | 159.4 |
| B | 5 | 185 | 75200 | 467.2 | 746 | 720 | 159.4 |
| B | 8 | 234 | 44532 | 274.82 | 746 | 720 | 159.4 |
| C | 1 | 241 | 3117244 | 17660.21 | 636 | 632 | 176.5 |
| C | 15 | 224 | 1175801 | 6659.07 | 636 | 632 | 176.5 |
| C | 15 | 178 | 620487 | 3512.39 | 636 | 632 | 176.5 |
| D | 11 | 245 | 1617283 | 8015.15 | 719 | 688 | 201.7 |
| D | 3 | 12 | 485809 | 2405.25 | 719 | 688 | 201.7 |
| D | 2 | 249 | 478322 | 2368.13 | 719 | 688 | 201.7 |
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 |  |