Observation information
- date-obs: 2025-08-15
- time-obs: 06:58:16.644000000
- date-end: 2025-08-15
- time-end: 09:03:40.621800000
- obs_id: A14_002T06_9000006496
- exposure: 2721.23419785
- 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_53451cztM0_level2.fits
| modeM0/AS1A14_002T06_9000006496_53451cztM0_level2_quad_clean.evt
|
| Size (bytes) | 741,677,760 | 84,689,280 |
| Size | 707.3 MB
| 80.8 MB
|
| Events in quadrant A | 4,822,760 | 616,141 |
| Events in quadrant B | 4,197,538 | 679,979 |
| Events in quadrant C | 13,632,510 | 245,603 |
| Events in quadrant D | 4,284,639 | 557,249 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| 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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18833 | 1 |
| B | 0 | 17102 | 1 |
| C | 0 | 44988 | 1 |
| D | 0 | 17470 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6670 | 403 | 6.041979% |
| B | 6670 | 187 | 2.803598% |
| C | 6670 | 4166 | 62.458771% |
| D | 6670 | 263 | 3.943028% |
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 | 7525 | 6671 | 279 | 279 | 3.71% | 4.18% |  |
| B | 7525 | 6671 | 51 | 51 | 0.68% | 0.76% |  |
| C | 7524 | 6669 | 3822 | 3822 | 50.80% | 57.31% |  |
| D | 7525 | 6671 | 200 | 200 | 2.66% | 3.00% |  |
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 | 4 | 249 | 1034301 | 5911.87 | 712 | 694 | 174.8 |
| A | 15 | 174 | 463231 | 2645.55 | 712 | 694 | 174.8 |
| A | 0 | 8 | 350176 | 1998.91 | 712 | 694 | 174.8 |
| B | 4 | 171 | 627607 | 4089.78 | 712 | 687 | 153.3 |
| B | 8 | 234 | 576169 | 3754.22 | 712 | 687 | 153.3 |
| B | 5 | 185 | 71091 | 459.29 | 712 | 687 | 153.3 |
| C | 1 | 241 | 9321942 | 75749.09 | 446 | 443 | 123.1 |
| C | 15 | 224 | 1098957 | 8926.83 | 446 | 443 | 123.1 |
| C | 15 | 178 | 966056 | 7846.84 | 446 | 443 | 123.1 |
| D | 3 | 12 | 834362 | 4253.21 | 691 | 659 | 196.0 |
| D | 7 | 70 | 158605 | 805.78 | 691 | 659 | 196.0 |
| D | 3 | 224 | 109189 | 553.68 | 691 | 659 | 196.0 |
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 |  |