Observation information
- date-obs: 2025-12-16
- time-obs: 11:09:15.468800000
- date-end: 2025-12-16
- time-end: 13:05:45.453200000
- obs_id: A14_009T01_9000006534
- exposure: 6059.5758751
- 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_55281cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55281cztM0_level2_quad_clean.evt
|
| Size (bytes) | 322,989,120 | 88,876,800 |
| Size | 308.0 MB
| 84.8 MB
|
| Events in quadrant A | 2,727,335 | 570,736 |
| Events in quadrant B | 2,696,844 | 614,709 |
| Events in quadrant C | 2,961,807 | 548,168 |
| Events in quadrant D | 3,083,501 | 521,471 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12967 | 1 |
| B | 0 | 12903 | 1 |
| C | 0 | 13614 | 1 |
| D | 0 | 13561 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6240 | 88 | 1.410256% |
| B | 6240 | 79 | 1.266026% |
| C | 6241 | 96 | 1.538215% |
| D | 6241 | 66 | 1.057523% |
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 | 6990 | 6241 | 13 | 13 | 0.19% | 0.21% |  |
| B | 6990 | 6241 | 8 | 8 | 0.11% | 0.13% |  |
| C | 6991 | 6242 | 52 | 52 | 0.74% | 0.83% |  |
| D | 6991 | 6242 | 18 | 18 | 0.26% | 0.29% |  |
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 | 98340 | 609.6 | 651 | 635 | 160.3 |
| A | 4 | 3 | 32551 | 199.13 | 651 | 635 | 160.3 |
| A | 3 | 14 | 21623 | 130.95 | 651 | 635 | 160.3 |
| B | 0 | 182 | 46123 | 327.58 | 642 | 620 | 138.9 |
| B | 10 | 247 | 45927 | 326.17 | 642 | 620 | 138.9 |
| B | 1 | 159 | 39792 | 282.01 | 642 | 620 | 138.9 |
| C | 13 | 3 | 206304 | 1189.24 | 631 | 624 | 173.0 |
| C | 12 | 2 | 80468 | 461.66 | 631 | 624 | 173.0 |
| C | 12 | 250 | 62076 | 355.31 | 631 | 624 | 173.0 |
| D | 3 | 12 | 174038 | 970.26 | 635 | 606 | 178.7 |
| D | 11 | 129 | 74612 | 414.02 | 635 | 606 | 178.7 |
| D | 6 | 42 | 68504 | 379.85 | 635 | 606 | 178.7 |
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 |  |