Observation information
- date-obs: 2025-12-21
- time-obs: 14:04:37.500300000
- date-end: 2025-12-21
- time-end: 16:14:20.483400000
- obs_id: A14_009T01_9000006534
- exposure: 6431.06636971
- 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_55358cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55358cztM0_level2_quad_clean.evt
|
| Size (bytes) | 383,656,320 | 101,805,120 |
| Size | 365.9 MB
| 97.1 MB
|
| Events in quadrant A | 3,108,958 | 668,197 |
| Events in quadrant B | 3,123,517 | 712,198 |
| Events in quadrant C | 3,508,124 | 639,008 |
| Events in quadrant D | 3,948,247 | 604,121 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14055 | 2 |
| B | 0 | 14034 | 2 |
| C | 0 | 15122 | 2 |
| D | 0 | 16311 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6593 | 77 | 1.167905% |
| B | 6593 | 68 | 1.031397% |
| C | 6592 | 63 | 0.955704% |
| D | 6592 | 114 | 1.729369% |
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 | 7753 | 6594 | 16 | 16 | 0.21% | 0.24% |  |
| B | 7753 | 6594 | 3 | 3 | 0.04% | 0.05% |  |
| C | 7752 | 6593 | 21 | 21 | 0.27% | 0.32% |  |
| D | 7752 | 6593 | 73 | 73 | 0.94% | 1.11% |  |
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 | 100708 | 560.67 | 725 | 706 | 178.4 |
| A | 4 | 249 | 78252 | 434.77 | 725 | 706 | 178.4 |
| A | 6 | 161 | 31739 | 173.99 | 725 | 706 | 178.4 |
| B | 9 | 254 | 109511 | 710.65 | 712 | 685 | 153.1 |
| B | 0 | 199 | 84371 | 546.48 | 712 | 685 | 153.1 |
| B | 5 | 185 | 63041 | 407.19 | 712 | 685 | 153.1 |
| C | 12 | 252 | 321805 | 1660.3 | 702 | 694 | 193.4 |
| C | 9 | 38 | 147964 | 761.46 | 702 | 694 | 193.4 |
| C | 13 | 3 | 84606 | 433.87 | 702 | 694 | 193.4 |
| D | 11 | 129 | 841951 | 4271.26 | 705 | 673 | 197.0 |
| D | 10 | 181 | 175732 | 888.79 | 705 | 673 | 197.0 |
| D | 5 | 173 | 50815 | 254.58 | 705 | 673 | 197.0 |
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 |  |