Observation information
- date-obs: 2025-12-20
- time-obs: 10:22:17.720100000
- date-end: 2025-12-20
- time-end: 12:28:13.702300000
- obs_id: A14_009T01_9000006534
- exposure: 6260.663481
- 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_55340cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55340cztM0_level2_quad_clean.evt
|
| Size (bytes) | 385,398,720 | 93,430,080 |
| Size | 367.5 MB
| 89.1 MB
|
| Events in quadrant A | 3,463,018 | 606,396 |
| Events in quadrant B | 3,095,928 | 642,673 |
| Events in quadrant C | 3,343,686 | 582,067 |
| Events in quadrant D | 3,857,880 | 544,831 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 4 |
| B | 0 | 136 | 4 |
| C | 0 | 136 | 2 |
| D | 0 | 136 | 4 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15205 | 286 |
| B | 0 | 14338 | 298 |
| C | 0 | 15072 | 331 |
| D | 0 | 16324 | 297 |
| 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 | 6502 | 100 | 1.537988% |
| B | 6494 | 127 | 1.955651% |
| C | 6493 | 60 | 0.924072% |
| D | 6489 | 125 | 1.926337% |
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 | 7516 | 6540 | 40 | 40 | 0.53% | 0.61% |  |
| B | 7531 | 6536 | 18 | 18 | 0.24% | 0.28% |  |
| C | 7513 | 6534 | 39 | 39 | 0.52% | 0.60% |  |
| D | 7512 | 6523 | 90 | 90 | 1.20% | 1.38% |  |
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 | 12 | 115 | 544608 | 3213.2 | 685 | 668 | 169.3 |
| A | 0 | 8 | 89592 | 525.29 | 685 | 668 | 169.3 |
| A | 3 | 78 | 81291 | 476.26 | 685 | 668 | 169.3 |
| B | 5 | 185 | 210359 | 1455.37 | 670 | 645 | 144.1 |
| B | 0 | 199 | 71638 | 492.68 | 670 | 645 | 144.1 |
| B | 0 | 183 | 61991 | 425.73 | 670 | 645 | 144.1 |
| C | 12 | 252 | 395299 | 2152.04 | 662 | 655 | 183.4 |
| C | 9 | 38 | 159350 | 865.38 | 662 | 655 | 183.4 |
| C | 12 | 249 | 81438 | 440.52 | 662 | 655 | 183.4 |
| D | 11 | 129 | 694268 | 3703.08 | 662 | 632 | 187.3 |
| D | 2 | 62 | 242956 | 1293.68 | 662 | 632 | 187.3 |
| D | 3 | 12 | 95956 | 508.9 | 662 | 632 | 187.3 |
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 |  |