Observation information
- date-obs: 2025-12-17
- time-obs: 14:44:20.255900000
- date-end: 2025-12-17
- time-end: 16:48:48.239500000
- obs_id: A14_009T01_9000006534
- exposure: 5798.65386045
- 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_55299cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55299cztM0_level2_quad_clean.evt
|
| Size (bytes) | 422,233,920 | 92,304,000 |
| Size | 402.7 MB
| 88.0 MB
|
| Events in quadrant A | 3,602,261 | 591,728 |
| Events in quadrant B | 2,843,483 | 656,152 |
| Events in quadrant C | 3,005,240 | 589,812 |
| Events in quadrant D | 5,683,086 | 512,646 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15239 | 1 |
| B | 0 | 13264 | 1 |
| C | 0 | 13766 | 1 |
| D | 0 | 21235 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6368 | 312 | 4.899497% |
| B | 6368 | 67 | 1.052136% |
| C | 6369 | 65 | 1.020568% |
| D | 6369 | 649 | 10.189983% |
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 | 7468 | 6368 | 242 | 242 | 3.24% | 3.80% |  |
| B | 7468 | 6368 | 5 | 5 | 0.07% | 0.08% |  |
| C | 7469 | 6370 | 38 | 38 | 0.51% | 0.60% |  |
| D | 7469 | 6369 | 536 | 536 | 7.18% | 8.42% |  |
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 | 7 | 7 | 504391 | 3063.13 | 663 | 646 | 164.5 |
| A | 0 | 8 | 235398 | 1427.46 | 663 | 646 | 164.5 |
| A | 4 | 205 | 71304 | 429.65 | 663 | 646 | 164.5 |
| B | 0 | 199 | 68379 | 476.01 | 665 | 641 | 142.3 |
| B | 10 | 247 | 33897 | 233.7 | 665 | 641 | 142.3 |
| B | 7 | 252 | 32774 | 225.8 | 665 | 641 | 142.3 |
| C | 13 | 3 | 114945 | 630.51 | 658 | 651 | 181.3 |
| C | 9 | 38 | 80214 | 438.91 | 658 | 651 | 181.3 |
| C | 14 | 254 | 67900 | 370.98 | 658 | 651 | 181.3 |
| D | 11 | 129 | 1907939 | 10700.76 | 631 | 605 | 178.2 |
| D | 6 | 239 | 461998 | 2588.56 | 631 | 605 | 178.2 |
| D | 7 | 96 | 377410 | 2114.0 | 631 | 605 | 178.2 |
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 |  |