Observation information
- date-obs: 2025-12-16
- time-obs: 16:11:00.428900000
- date-end: 2025-12-16
- time-end: 18:14:37.410800000
- obs_id: A14_009T01_9000006534
- exposure: 5757.32868111
- sourceid: M31N 2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_009T01_9000006534_55285cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55285cztM0_level2_quad_clean.evt
|
| Size (bytes) | 408,487,680 | 92,232,000 |
| Size | 389.6 MB
| 88.0 MB
|
| Events in quadrant A | 2,877,912 | 616,326 |
| Events in quadrant B | 3,968,519 | 610,810 |
| Events in quadrant C | 3,562,861 | 578,459 |
| Events in quadrant D | 4,220,680 | 546,970 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13208 | 1 |
| B | 0 | 16339 | 1 |
| C | 0 | 15413 | 1 |
| D | 0 | 16875 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6306 | 72 | 1.141770% |
| B | 6307 | 500 | 7.927699% |
| C | 6307 | 203 | 3.218646% |
| D | 6306 | 252 | 3.996194% |
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 | 7417 | 6308 | 21 | 21 | 0.28% | 0.33% |  |
| B | 7418 | 6309 | 353 | 353 | 4.76% | 5.60% |  |
| C | 7418 | 6309 | 127 | 127 | 1.71% | 2.01% |  |
| D | 7417 | 6308 | 215 | 215 | 2.90% | 3.41% |  |
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 | 0 | 8 | 111177 | 671.0 | 670 | 652 | 164.7 |
| A | 7 | 7 | 52697 | 315.97 | 670 | 652 | 164.7 |
| A | 4 | 3 | 43902 | 262.57 | 670 | 652 | 164.7 |
| B | 10 | 14 | 1179893 | 8615.66 | 631 | 610 | 136.9 |
| B | 0 | 199 | 130231 | 946.99 | 631 | 610 | 136.9 |
| B | 2 | 249 | 71382 | 517.05 | 631 | 610 | 136.9 |
| C | 13 | 3 | 496397 | 2772.13 | 649 | 644 | 178.8 |
| C | 3 | 248 | 237379 | 1323.76 | 649 | 644 | 178.8 |
| C | 10 | 22 | 111382 | 619.22 | 649 | 644 | 178.8 |
| D | 11 | 129 | 714602 | 3875.41 | 649 | 620 | 184.2 |
| D | 7 | 70 | 356252 | 1930.33 | 649 | 620 | 184.2 |
| D | 5 | 38 | 172621 | 933.6 | 649 | 620 | 184.2 |
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 |  |