Observation information
- date-obs: 2025-08-15
- time-obs: 16:54:20.544500000
- date-end: 2025-08-15
- time-end: 19:23:16.519300000
- obs_id: A14_002T06_9000006496
- exposure: 485.964444518
- 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_53458cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53458cztM0_level2_quad_clean.evt
|
| Size (bytes) | 851,472,000 | 83,784,960 |
| Size | 812.0 MB
| 79.9 MB
|
| Events in quadrant A | 4,534,897 | 661,720 |
| Events in quadrant B | 3,671,517 | 744,364 |
| Events in quadrant C | 18,147,884 | 46,056 |
| Events in quadrant D | 4,625,480 | 601,363 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18299 | 2 |
| B | 0 | 15703 | 2 |
| C | 0 | 58452 | 2 |
| D | 0 | 18767 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6942 | 476 | 6.856814% |
| B | 6942 | 195 | 2.808989% |
| C | 6942 | 6524 | 93.978680% |
| D | 6941 | 283 | 4.077222% |
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 | 8937 | 6944 | 269 | 269 | 3.01% | 3.87% |  |
| B | 8937 | 6944 | 15 | 15 | 0.17% | 0.22% |  |
| C | 8937 | 6942 | 6289 | 6289 | 70.37% | 90.59% |  |
| D | 8936 | 6943 | 186 | 186 | 2.08% | 2.68% |  |
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 | 15 | 174 | 715609 | 3778.57 | 771 | 752 | 189.2 |
| A | 3 | 63 | 673672 | 3556.9 | 771 | 752 | 189.2 |
| A | 3 | 14 | 54146 | 282.23 | 771 | 752 | 189.2 |
| B | 4 | 171 | 249826 | 1479.44 | 781 | 753 | 168.4 |
| B | 0 | 213 | 79636 | 468.55 | 781 | 753 | 168.4 |
| B | 2 | 249 | 73294 | 430.88 | 781 | 753 | 168.4 |
| C | 1 | 241 | 13902579 | 208609.82 | 243 | 241 | 66.6 |
| C | 15 | 178 | 1581550 | 23728.14 | 243 | 241 | 66.6 |
| C | 15 | 224 | 1362007 | 20433.81 | 243 | 241 | 66.6 |
| D | 7 | 70 | 882423 | 4090.68 | 765 | 729 | 215.5 |
| D | 8 | 176 | 190336 | 879.69 | 765 | 729 | 215.5 |
| D | 1 | 0 | 181098 | 836.83 | 765 | 729 | 215.5 |
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 |  |