Observation information
- date-obs: 2025-12-15
- time-obs: 12:30:31.644900000
- date-end: 2025-12-15
- time-end: 14:33:50.636500000
- obs_id: A14_009T01_9000006534
- exposure: 6301.85154098
- 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_55267cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55267cztM0_level2_quad_clean.evt
|
| Size (bytes) | 373,795,200 | 93,729,600 |
| Size | 356.5 MB
| 89.4 MB
|
| Events in quadrant A | 3,215,432 | 605,735 |
| Events in quadrant B | 3,064,309 | 651,577 |
| Events in quadrant C | 3,536,870 | 572,236 |
| Events in quadrant D | 3,510,187 | 552,428 |
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 | 14560 | 1 |
| B | 0 | 14108 | 1 |
| C | 0 | 15415 | 1 |
| D | 0 | 15199 | 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 | 6545 | 122 | 1.864018% |
| B | 6545 | 90 | 1.375095% |
| C | 6545 | 192 | 2.933537% |
| D | 6544 | 122 | 1.864303% |
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 | 7400 | 6546 | 51 | 51 | 0.69% | 0.78% |  |
| B | 7400 | 6546 | 32 | 32 | 0.43% | 0.49% |  |
| C | 7400 | 6546 | 144 | 144 | 1.95% | 2.20% |  |
| D | 7399 | 6545 | 83 | 83 | 1.12% | 1.27% |  |
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 | 287073 | 1686.57 | 684 | 665 | 169.8 |
| A | 12 | 115 | 191038 | 1121.05 | 684 | 665 | 169.8 |
| A | 4 | 157 | 14479 | 81.35 | 684 | 665 | 169.8 |
| B | 5 | 185 | 180233 | 1247.26 | 673 | 650 | 144.0 |
| B | 10 | 189 | 60803 | 417.78 | 673 | 650 | 144.0 |
| B | 0 | 182 | 54196 | 371.89 | 673 | 650 | 144.0 |
| C | 15 | 147 | 438641 | 2423.53 | 658 | 651 | 180.7 |
| C | 10 | 22 | 189362 | 1044.19 | 658 | 651 | 180.7 |
| C | 13 | 3 | 136734 | 752.99 | 658 | 651 | 180.7 |
| D | 11 | 129 | 279942 | 1487.88 | 664 | 637 | 187.7 |
| D | 7 | 96 | 194895 | 1034.83 | 664 | 637 | 187.7 |
| D | 8 | 160 | 89603 | 473.93 | 664 | 637 | 187.7 |
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 |  |