Observation information
- date-obs: 2025-12-23
- time-obs: 19:29:28.849300000
- date-end: 2025-12-23
- time-end: 21:56:03.059000000
- obs_id: A14_009T01_9000006534
- exposure: 7053.60009509
- 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_55391cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55391cztM0_level2_quad_clean.evt
|
| Size (bytes) | 432,993,600 | 108,374,400 |
| Size | 412.9 MB
| 103.4 MB
|
| Events in quadrant A | 3,668,269 | 706,282 |
| Events in quadrant B | 3,398,473 | 758,573 |
| Events in quadrant C | 3,557,426 | 678,344 |
| Events in quadrant D | 4,829,309 | 624,856 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16443 | 2 |
| B | 0 | 15770 | 2 |
| C | 0 | 16021 | 2 |
| D | 0 | 19797 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7385 | 105 | 1.421801% |
| B | 7386 | 91 | 1.232061% |
| C | 7386 | 54 | 0.731113% |
| D | 7386 | 336 | 4.549147% |
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 | 8795 | 7387 | 59 | 59 | 0.67% | 0.80% |  |
| B | 8796 | 7388 | 23 | 23 | 0.26% | 0.31% |  |
| C | 8796 | 7388 | 31 | 31 | 0.35% | 0.42% |  |
| D | 8795 | 7387 | 290 | 290 | 3.30% | 3.93% |  |
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 | 270699 | 1370.36 | 795 | 773 | 197.0 |
| A | 4 | 159 | 165413 | 835.84 | 795 | 773 | 197.0 |
| A | 4 | 3 | 34611 | 171.79 | 795 | 773 | 197.0 |
| B | 10 | 247 | 118748 | 704.59 | 788 | 760 | 167.5 |
| B | 5 | 185 | 60297 | 355.54 | 788 | 760 | 167.5 |
| B | 0 | 199 | 37518 | 219.51 | 788 | 760 | 167.5 |
| C | 9 | 38 | 300418 | 1388.76 | 784 | 775 | 215.8 |
| C | 12 | 249 | 109707 | 504.87 | 784 | 775 | 215.8 |
| C | 12 | 250 | 48770 | 222.44 | 784 | 775 | 215.8 |
| D | 11 | 129 | 1211387 | 5507.48 | 772 | 738 | 219.8 |
| D | 2 | 249 | 224478 | 1017.84 | 772 | 738 | 219.8 |
| D | 7 | 70 | 115201 | 520.71 | 772 | 738 | 219.8 |
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 |  |