Observation information
- date-obs: 2025-12-15
- time-obs: 14:04:38.636200000
- date-end: 2025-12-15
- time-end: 16:17:11.614100000
- obs_id: A14_009T01_9000006534
- exposure: 6386.76668864
- 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_55269cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55269cztM0_level2_quad_clean.evt
|
| Size (bytes) | 412,634,880 | 98,968,320 |
| Size | 393.5 MB
| 94.4 MB
|
| Events in quadrant A | 4,417,223 | 624,011 |
| Events in quadrant B | 3,112,722 | 695,547 |
| Events in quadrant C | 3,640,957 | 615,751 |
| Events in quadrant D | 3,572,972 | 586,522 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18208 | 2 |
| B | 0 | 14447 | 2 |
| C | 0 | 15824 | 2 |
| D | 0 | 15603 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6815 | 420 | 6.162876% |
| B | 6815 | 69 | 1.012472% |
| C | 6815 | 151 | 2.215701% |
| D | 6815 | 127 | 1.863536% |
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 | 7816 | 6816 | 314 | 314 | 4.02% | 4.61% |  |
| B | 7816 | 6816 | 7 | 7 | 0.09% | 0.10% |  |
| C | 7816 | 6816 | 96 | 96 | 1.23% | 1.41% |  |
| D | 7816 | 6816 | 77 | 77 | 0.99% | 1.13% |  |
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 | 1455594 | 8306.52 | 712 | 694 | 175.2 |
| A | 3 | 14 | 59618 | 336.42 | 712 | 694 | 175.2 |
| A | 7 | 160 | 24108 | 133.68 | 712 | 694 | 175.2 |
| B | 5 | 185 | 81413 | 525.03 | 716 | 690 | 153.7 |
| B | 0 | 182 | 76484 | 492.97 | 716 | 690 | 153.7 |
| B | 7 | 0 | 32785 | 208.75 | 716 | 690 | 153.7 |
| C | 13 | 3 | 398653 | 2079.49 | 700 | 693 | 191.4 |
| C | 15 | 147 | 195977 | 1020.43 | 700 | 693 | 191.4 |
| C | 14 | 254 | 73136 | 378.54 | 700 | 693 | 191.4 |
| D | 7 | 96 | 274890 | 1381.88 | 706 | 674 | 198.4 |
| D | 2 | 31 | 90862 | 454.49 | 706 | 674 | 198.4 |
| D | 8 | 160 | 81059 | 405.09 | 706 | 674 | 198.4 |
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 |  |