Observation information
- date-obs: 2025-12-23
- time-obs: 02:22:06.220200000
- date-end: 2025-12-23
- time-end: 08:08:03.175500000
- obs_id: A14_009T01_9000006534
- exposure: 17377.9779585
- 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_55382cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55382cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,292,209,920 | 268,395,840 |
| Size | 1.2 GB
| 256.0 MB
|
| Events in quadrant A | 16,960,245 | 1,585,586 |
| Events in quadrant B | 9,018,439 | 1,892,519 |
| Events in quadrant C | 8,598,443 | 1,724,382 |
| Events in quadrant D | 11,746,914 | 1,580,910 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 396 | 0 |
| B | 0 | 396 | 0 |
| C | 0 | 396 | 0 |
| D | 0 | 396 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 64041 | 4 |
| B | 0 | 41330 | 4 |
| C | 0 | 41026 | 4 |
| D | 0 | 49020 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19486 | 2414 | 12.388381% |
| B | 19486 | 391 | 2.006569% |
| C | 19487 | 206 | 1.057115% |
| D | 19487 | 648 | 3.325294% |
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 | 20757 | 19488 | 1723 | 1723 | 8.30% | 8.84% |  |
| B | 20757 | 19489 | 58 | 58 | 0.28% | 0.30% |  |
| C | 20758 | 19490 | 69 | 69 | 0.33% | 0.35% |  |
| D | 20758 | 19491 | 508 | 508 | 2.45% | 2.61% |  |
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 | 4 | 159 | 8005704 | 16419.11 | 1999 | 1946 | 487.5 |
| A | 0 | 8 | 456214 | 931.9 | 1999 | 1946 | 487.5 |
| A | 11 | 31 | 233658 | 475.34 | 1999 | 1946 | 487.5 |
| B | 0 | 199 | 263722 | 591.25 | 2057 | 1972 | 442.7 |
| B | 10 | 247 | 216995 | 485.7 | 2057 | 1972 | 442.7 |
| B | 5 | 172 | 144008 | 320.84 | 2057 | 1972 | 442.7 |
| C | 13 | 3 | 410099 | 727.44 | 2043 | 2020 | 561.0 |
| C | 9 | 38 | 43479 | 73.9 | 2043 | 2020 | 561.0 |
| C | 12 | 250 | 30400 | 50.59 | 2043 | 2020 | 561.0 |
| D | 15 | 107 | 830176 | 1476.94 | 2007 | 1922 | 560.8 |
| D | 11 | 129 | 651234 | 1157.85 | 2007 | 1922 | 560.8 |
| D | 2 | 31 | 455000 | 807.92 | 2007 | 1922 | 560.8 |
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 |  |