Observation information
- date-obs: 2025-08-03
- time-obs: 03:34:44.113500000
- date-end: 2025-08-03
- time-end: 05:32:05.098400000
- obs_id: C09_011T08_9000006492
- exposure: 4651.84706914
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T08_9000006492_53271cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53271cztM0_level2_quad_clean.evt
|
| Size (bytes) | 775,321,920 | 91,336,320 |
| Size | 739.4 MB
| 87.1 MB
|
| Events in quadrant A | 5,011,707 | 640,997 |
| Events in quadrant B | 6,869,465 | 633,385 |
| Events in quadrant C | 12,229,643 | 414,071 |
| Events in quadrant D | 4,044,335 | 585,932 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19818 | 0 |
| B | 0 | 25320 | 0 |
| C | 0 | 41242 | 0 |
| D | 0 | 17369 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7041 | 302 | 4.289163% |
| B | 7042 | 907 | 12.879864% |
| C | 7042 | 2893 | 41.082079% |
| D | 7042 | 212 | 3.010508% |
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 | 7041 | 7041 | 243 | 243 | 3.45% | 3.45% |  |
| B | 7042 | 7042 | 671 | 671 | 9.53% | 9.53% |  |
| C | 7042 | 7042 | 2745 | 2745 | 38.98% | 38.98% |  |
| D | 7042 | 7042 | 211 | 211 | 3.00% | 3.00% |  |
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 | 3 | 27 | 1418796 | 8007.41 | 718 | 700 | 177.1 |
| A | 3 | 62 | 259405 | 1460.8 | 718 | 700 | 177.1 |
| A | 4 | 249 | 197986 | 1113.99 | 718 | 700 | 177.1 |
| B | 10 | 254 | 2540929 | 17045.01 | 697 | 671 | 149.0 |
| B | 2 | 249 | 784931 | 5262.35 | 697 | 671 | 149.0 |
| B | 4 | 81 | 419986 | 2813.58 | 697 | 671 | 149.0 |
| C | 10 | 22 | 5326322 | 32249.07 | 604 | 597 | 165.1 |
| C | 15 | 224 | 1750987 | 10599.21 | 604 | 597 | 165.1 |
| C | 5 | 10 | 1148468 | 6950.75 | 604 | 597 | 165.1 |
| D | 3 | 12 | 332899 | 1676.03 | 694 | 662 | 198.2 |
| D | 12 | 128 | 280403 | 1411.2 | 694 | 662 | 198.2 |
| D | 1 | 0 | 273379 | 1375.77 | 694 | 662 | 198.2 |
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 |  |