Observation information
- date-obs: 2025-12-17
- time-obs: 11:23:02.282500000
- date-end: 2025-12-17
- time-end: 13:22:10.266400000
- obs_id: A14_009T01_9000006534
- exposure: 5863.32344466
- 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_55296cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55296cztM0_level2_quad_clean.evt
|
| Size (bytes) | 398,508,480 | 89,611,200 |
| Size | 380.0 MB
| 85.5 MB
|
| Events in quadrant A | 2,884,447 | 589,078 |
| Events in quadrant B | 2,919,624 | 623,738 |
| Events in quadrant C | 3,504,074 | 555,374 |
| Events in quadrant D | 4,952,283 | 505,566 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13414 | 1 |
| B | 0 | 13462 | 1 |
| C | 0 | 15073 | 1 |
| D | 0 | 19092 | 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 | 6308 | 96 | 1.521877% |
| B | 6308 | 106 | 1.680406% |
| C | 6309 | 161 | 2.551910% |
| D | 6309 | 487 | 7.719131% |
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 | 7148 | 6308 | 44 | 44 | 0.62% | 0.70% |  |
| B | 7148 | 6308 | 24 | 24 | 0.34% | 0.38% |  |
| C | 7149 | 6310 | 123 | 123 | 1.72% | 1.95% |  |
| D | 7149 | 6309 | 423 | 423 | 5.92% | 6.70% |  |
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 | 210260 | 1283.54 | 660 | 644 | 163.3 |
| A | 4 | 205 | 47442 | 286.56 | 660 | 644 | 163.3 |
| A | 4 | 3 | 22750 | 135.36 | 660 | 644 | 163.3 |
| B | 2 | 249 | 163332 | 1165.04 | 646 | 623 | 139.7 |
| B | 0 | 199 | 75429 | 535.63 | 646 | 623 | 139.7 |
| B | 7 | 252 | 35747 | 251.5 | 646 | 623 | 139.7 |
| C | 9 | 38 | 422210 | 2408.29 | 635 | 628 | 175.1 |
| C | 13 | 3 | 253271 | 1443.22 | 635 | 628 | 175.1 |
| C | 12 | 252 | 124447 | 707.32 | 635 | 628 | 175.1 |
| D | 11 | 129 | 1996889 | 11274.95 | 625 | 599 | 177.1 |
| D | 6 | 239 | 140016 | 787.42 | 625 | 599 | 177.1 |
| D | 7 | 96 | 132007 | 742.19 | 625 | 599 | 177.1 |
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 |  |