Observation information
- date-obs: 2025-08-16
- time-obs: 17:08:52.306500000
- date-end: 2025-08-16
- time-end: 19:42:01.282700000
- obs_id: A14_002T06_9000006496
- exposure: 3877.10635728
- 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_53473cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53473cztM0_level2_quad_clean.evt
|
| Size (bytes) | 894,873,600 | 94,305,600 |
| Size | 853.4 MB
| 89.9 MB
|
| Events in quadrant A | 10,688,774 | 546,247 |
| Events in quadrant B | 4,162,071 | 789,645 |
| Events in quadrant C | 13,151,755 | 358,571 |
| Events in quadrant D | 4,546,304 | 642,527 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 36955 | 2 |
| B | 0 | 17448 | 2 |
| C | 0 | 44220 | 4 |
| D | 0 | 18759 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7449 | 2358 | 31.655256% |
| B | 7450 | 251 | 3.369128% |
| C | 7449 | 3846 | 51.631091% |
| D | 7449 | 264 | 3.544100% |
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 | 9189 | 7450 | 1983 | 1983 | 21.58% | 26.62% |  |
| B | 9190 | 7452 | 27 | 27 | 0.29% | 0.36% |  |
| C | 9189 | 7450 | 3514 | 3514 | 38.24% | 47.17% |  |
| D | 9189 | 7451 | 162 | 162 | 1.76% | 2.17% |  |
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 | 62 | 2663331 | 14467.23 | 749 | 730 | 184.0 |
| A | 3 | 63 | 2391419 | 12989.8 | 749 | 730 | 184.0 |
| A | 15 | 174 | 1966156 | 10679.14 | 749 | 730 | 184.0 |
| B | 4 | 171 | 279206 | 1552.87 | 834 | 804 | 179.3 |
| B | 10 | 28 | 144875 | 803.6 | 834 | 804 | 179.3 |
| B | 7 | 252 | 83284 | 460.06 | 834 | 804 | 179.3 |
| C | 1 | 241 | 5254435 | 33412.53 | 571 | 566 | 157.2 |
| C | 15 | 224 | 2402480 | 15275.22 | 571 | 566 | 157.2 |
| C | 4 | 5 | 1650014 | 10489.84 | 571 | 566 | 157.2 |
| D | 3 | 12 | 494766 | 2158.64 | 813 | 779 | 228.8 |
| D | 15 | 42 | 193682 | 842.96 | 813 | 779 | 228.8 |
| D | 13 | 153 | 165718 | 720.76 | 813 | 779 | 228.8 |
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 |  |