Observation information
- date-obs: 2025-12-19
- time-obs: 23:31:11.807800000
- date-end: 2025-12-20
- time-end: 02:02:42.778200000
- obs_id: A14_009T01_9000006534
- exposure: 8345.12690866
- 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_55334cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55334cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,435,200 | 124,188,480 |
| Size | 545.0 MB
| 118.4 MB
|
| Events in quadrant A | 4,665,845 | 806,125 |
| Events in quadrant B | 4,074,814 | 864,835 |
| Events in quadrant C | 6,644,393 | 759,863 |
| Events in quadrant D | 5,095,677 | 727,786 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 176 | 0 |
| B | 0 | 176 | 0 |
| C | 0 | 176 | 0 |
| D | 0 | 176 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20346 | 1 |
| B | 0 | 18752 | 1 |
| C | 0 | 25770 | 2 |
| D | 0 | 21515 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8661 | 103 | 1.189239% |
| B | 8662 | 73 | 0.842761% |
| C | 8661 | 304 | 3.509987% |
| D | 8661 | 152 | 1.754994% |
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 | 9091 | 8662 | 60 | 60 | 0.66% | 0.69% |  |
| B | 9092 | 8663 | 17 | 17 | 0.19% | 0.20% |  |
| C | 9091 | 8662 | 228 | 228 | 2.51% | 2.63% |  |
| D | 9091 | 8662 | 118 | 118 | 1.30% | 1.36% |  |
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 | 370596 | 1628.75 | 920 | 898 | 227.0 |
| A | 0 | 8 | 228912 | 1004.54 | 920 | 898 | 227.0 |
| A | 3 | 78 | 223192 | 979.34 | 920 | 898 | 227.0 |
| B | 0 | 199 | 239916 | 1205.8 | 918 | 883 | 198.2 |
| B | 7 | 252 | 67573 | 336.42 | 918 | 883 | 198.2 |
| B | 5 | 185 | 45814 | 226.65 | 918 | 883 | 198.2 |
| C | 9 | 38 | 2492805 | 10091.19 | 900 | 890 | 246.9 |
| C | 13 | 3 | 290848 | 1174.2 | 900 | 890 | 246.9 |
| C | 12 | 249 | 114517 | 460.14 | 900 | 890 | 246.9 |
| D | 11 | 129 | 423590 | 1659.69 | 901 | 864 | 254.7 |
| D | 3 | 12 | 265507 | 1039.03 | 901 | 864 | 254.7 |
| D | 11 | 176 | 196004 | 766.15 | 901 | 864 | 254.7 |
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 |  |