Observation information
- date-obs: 2025-07-17
- time-obs: 12:28:45.253500000
- date-end: 2025-07-17
- time-end: 14:31:02.237400000
- obs_id: C09_011T07_9000006488
- exposure: 10.8083367944
- 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_011T07_9000006488_53024cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53024cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,145,468,160 | 73,874,880 |
| Size | 1.1 GB
| 70.5 MB
|
| Events in quadrant A | 17,068,613 | 1,076 |
| Events in quadrant B | 5,493,130 | 690,138 |
| Events in quadrant C | 10,821,686 | 497,532 |
| Events in quadrant D | 8,451,193 | 537,099 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 55672 | 19 |
| B | 0 | 21395 | 0 |
| C | 0 | 37267 | 3 |
| D | 0 | 30132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7335 | 7328 | 99.904567% |
| B | 7337 | 695 | 9.472536% |
| C | 7337 | 2226 | 30.339376% |
| D | 7337 | 1521 | 20.730544% |
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 | 7336 | 7334 | 6826 | 6826 | 93.05% | 93.07% |  |
| B | 7338 | 7338 | 568 | 568 | 7.74% | 7.74% |  |
| C | 7337 | 7337 | 2057 | 2057 | 28.04% | 28.04% |  |
| D | 7337 | 7337 | 1403 | 1403 | 19.12% | 19.12% |  |
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 | 9 | 191 | 15613637 | 497662.94 | 118 | 115 | 31.4 |
| A | 7 | 206 | 455014 | 14499.38 | 118 | 115 | 31.4 |
| A | 15 | 190 | 295799 | 9424.59 | 118 | 115 | 31.4 |
| B | 10 | 44 | 1681816 | 10856.79 | 728 | 703 | 154.8 |
| B | 2 | 249 | 419963 | 2707.62 | 728 | 703 | 154.8 |
| B | 10 | 191 | 81600 | 522.44 | 728 | 703 | 154.8 |
| C | 15 | 224 | 2755525 | 15483.8 | 649 | 643 | 177.9 |
| C | 1 | 241 | 2617951 | 14710.57 | 649 | 643 | 177.9 |
| C | 9 | 38 | 1678770 | 9431.91 | 649 | 643 | 177.9 |
| D | 12 | 17 | 3310752 | 16437.9 | 688 | 655 | 201.4 |
| D | 8 | 176 | 824577 | 4091.59 | 688 | 655 | 201.4 |
| D | 2 | 62 | 395638 | 1961.48 | 688 | 655 | 201.4 |
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 |  |