Observation information
- date-obs: 2025-12-23
- time-obs: 18:06:00.957600000
- date-end: 2025-12-23
- time-end: 20:13:36.073500000
- obs_id: A14_009T01_9000006534
- exposure: 5679.28378534
- 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_55390cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55390cztM0_level2_quad_clean.evt
|
| Size (bytes) | 530,703,360 | 95,339,520 |
| Size | 506.1 MB
| 90.9 MB
|
| Events in quadrant A | 5,041,512 | 623,732 |
| Events in quadrant B | 2,985,437 | 687,330 |
| Events in quadrant C | 3,067,006 | 613,292 |
| Events in quadrant D | 8,030,009 | 494,581 |
Level1 data integrity
| 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 | 19707 | 2 |
| B | 0 | 14080 | 2 |
| C | 0 | 14261 | 3 |
| D | 0 | 28517 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6711 | 329 | 4.902399% |
| B | 6712 | 54 | 0.804529% |
| C | 6711 | 78 | 1.162271% |
| D | 6711 | 1148 | 17.106243% |
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 | 7656 | 6712 | 300 | 300 | 3.92% | 4.47% |  |
| B | 7657 | 6713 | 23 | 23 | 0.30% | 0.34% |  |
| C | 7656 | 6712 | 69 | 69 | 0.90% | 1.03% |  |
| D | 7656 | 6712 | 1043 | 1043 | 13.62% | 15.54% |  |
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 | 159 | 1434630 | 8294.58 | 699 | 680 | 172.9 |
| A | 0 | 8 | 521347 | 3011.76 | 699 | 680 | 172.9 |
| A | 6 | 162 | 137333 | 790.46 | 699 | 680 | 172.9 |
| B | 10 | 247 | 80217 | 530.13 | 702 | 674 | 150.0 |
| B | 5 | 185 | 78883 | 521.24 | 702 | 674 | 150.0 |
| B | 0 | 199 | 21869 | 141.26 | 702 | 674 | 150.0 |
| C | 13 | 3 | 171763 | 891.72 | 697 | 689 | 191.8 |
| C | 9 | 38 | 54669 | 281.37 | 697 | 689 | 191.8 |
| C | 12 | 250 | 47646 | 244.76 | 697 | 689 | 191.8 |
| D | 11 | 129 | 2527095 | 14093.42 | 631 | 605 | 179.3 |
| D | 7 | 70 | 2489477 | 13883.58 | 631 | 605 | 179.3 |
| D | 2 | 249 | 168086 | 934.25 | 631 | 605 | 179.3 |
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 |  |