Observation information
- date-obs: 2025-12-19
- time-obs: 11:53:59.900800000
- date-end: 2025-12-19
- time-end: 13:52:38.883400000
- obs_id: A14_009T01_9000006534
- exposure: 5910.8761096
- 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_55327cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55327cztM0_level2_quad_clean.evt
|
| Size (bytes) | 375,431,040 | 88,680,960 |
| Size | 358.0 MB
| 84.6 MB
|
| Events in quadrant A | 3,192,370 | 575,842 |
| Events in quadrant B | 2,947,480 | 617,202 |
| Events in quadrant C | 3,686,458 | 547,230 |
| Events in quadrant D | 3,592,779 | 515,918 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14102 | 1 |
| B | 0 | 13405 | 1 |
| C | 0 | 15473 | 1 |
| D | 0 | 15080 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6139 | 136 | 2.215345% |
| B | 6140 | 113 | 1.840391% |
| C | 6140 | 161 | 2.622150% |
| D | 6140 | 206 | 3.355049% |
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 | 7119 | 6140 | 57 | 57 | 0.80% | 0.93% |  |
| B | 7120 | 6141 | 42 | 42 | 0.59% | 0.68% |  |
| C | 7120 | 6141 | 118 | 118 | 1.66% | 1.92% |  |
| D | 7120 | 6141 | 182 | 182 | 2.56% | 2.96% |  |
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 | 3 | 78 | 536600 | 3383.25 | 644 | 627 | 158.4 |
| A | 0 | 8 | 62921 | 393.22 | 644 | 627 | 158.4 |
| A | 3 | 14 | 44647 | 277.87 | 644 | 627 | 158.4 |
| B | 0 | 199 | 188425 | 1374.41 | 632 | 609 | 136.7 |
| B | 10 | 247 | 158086 | 1152.39 | 632 | 609 | 136.7 |
| B | 7 | 252 | 52682 | 381.06 | 632 | 609 | 136.7 |
| C | 7 | 64 | 739982 | 4285.52 | 622 | 614 | 172.5 |
| C | 6 | 223 | 229136 | 1324.56 | 622 | 614 | 172.5 |
| C | 13 | 3 | 222252 | 1284.66 | 622 | 614 | 172.5 |
| D | 11 | 176 | 804434 | 4557.78 | 624 | 598 | 176.4 |
| D | 5 | 173 | 52160 | 292.36 | 624 | 598 | 176.4 |
| D | 7 | 96 | 50634 | 283.71 | 624 | 598 | 176.4 |
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 |  |