Observation information
- date-obs: 2025-12-16
- time-obs: 12:45:00.455700000
- date-end: 2025-12-16
- time-end: 14:51:19.438600000
- obs_id: A14_009T01_9000006534
- exposure: 6467.00938141
- 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_55282cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55282cztM0_level2_quad_clean.evt
|
| Size (bytes) | 370,126,080 | 96,160,320 |
| Size | 353.0 MB
| 91.7 MB
|
| Events in quadrant A | 3,157,130 | 622,299 |
| Events in quadrant B | 2,821,872 | 669,653 |
| Events in quadrant C | 3,330,017 | 594,255 |
| Events in quadrant D | 3,872,292 | 560,225 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14302 | 1 |
| B | 0 | 13646 | 1 |
| C | 0 | 14966 | 1 |
| D | 0 | 16091 | 7 |
| 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 | 6669 | 95 | 1.424501% |
| B | 6670 | 51 | 0.764618% |
| C | 6670 | 106 | 1.589205% |
| D | 6669 | 164 | 2.459139% |
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 | 7579 | 6669 | 38 | 38 | 0.50% | 0.57% |  |
| B | 7580 | 6671 | 1 | 1 | 0.01% | 0.01% |  |
| C | 7580 | 6671 | 61 | 61 | 0.80% | 0.91% |  |
| D | 7579 | 6670 | 133 | 133 | 1.75% | 1.99% |  |
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 | 211648 | 1230.31 | 699 | 680 | 171.5 |
| A | 7 | 7 | 106376 | 616.39 | 699 | 680 | 171.5 |
| A | 4 | 3 | 50192 | 288.74 | 699 | 680 | 171.5 |
| B | 0 | 182 | 49238 | 327.47 | 688 | 664 | 148.3 |
| B | 12 | 111 | 17893 | 116.15 | 688 | 664 | 148.3 |
| B | 11 | 111 | 16844 | 109.08 | 688 | 664 | 148.3 |
| C | 13 | 3 | 217070 | 1162.52 | 676 | 668 | 186.1 |
| C | 10 | 22 | 179997 | 963.36 | 676 | 668 | 186.1 |
| C | 12 | 2 | 68566 | 364.75 | 676 | 668 | 186.1 |
| D | 11 | 176 | 333429 | 1747.17 | 678 | 647 | 190.5 |
| D | 6 | 42 | 220023 | 1151.77 | 678 | 647 | 190.5 |
| D | 11 | 129 | 199524 | 1044.15 | 678 | 647 | 190.5 |
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 |  |