Observation information
- date-obs: 2025-07-28
- time-obs: 01:51:28.262400000
- date-end: 2025-07-28
- time-end: 03:48:55.248400000
- obs_id: C09_011T06_9000006490
- exposure: 1424.08347267
- 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_011T06_9000006490_53181cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53181cztM0_level2_quad_clean.evt
|
| Size (bytes) | 883,589,760 | 65,727,360 |
| Size | 842.7 MB
| 62.7 MB
|
| Events in quadrant A | 4,132,999 | 544,611 |
| Events in quadrant B | 2,742,458 | 607,744 |
| Events in quadrant C | 10,942,770 | 302,336 |
| Events in quadrant D | 14,431,482 | 121,073 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16695 | 1 |
| B | 0 | 12656 | 1 |
| C | 0 | 36565 | 1 |
| D | 0 | 46934 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5922 | 334 | 5.639986% |
| B | 5923 | 43 | 0.725983% |
| C | 5923 | 2898 | 48.927908% |
| D | 5922 | 4683 | 79.078014% |
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 | 7047 | 5923 | 294 | 294 | 4.17% | 4.96% |  |
| B | 7048 | 5924 | 9 | 9 | 0.13% | 0.15% |  |
| C | 7048 | 5923 | 2976 | 2976 | 42.22% | 50.24% |  |
| D | 7046 | 5921 | 4882 | 4882 | 69.29% | 82.45% |  |
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 | 807766 | 5530.36 | 588 | 572 | 146.0 |
| A | 3 | 62 | 462844 | 3167.18 | 588 | 572 | 146.0 |
| A | 12 | 3 | 180923 | 1235.65 | 588 | 572 | 146.0 |
| B | 7 | 0 | 54299 | 425.93 | 597 | 576 | 126.1 |
| B | 4 | 171 | 52597 | 412.43 | 597 | 576 | 126.1 |
| B | 4 | 169 | 47786 | 374.29 | 597 | 576 | 126.1 |
| C | 0 | 240 | 4247030 | 33410.69 | 455 | 450 | 127.1 |
| C | 1 | 241 | 2468110 | 19414.73 | 455 | 450 | 127.1 |
| C | 15 | 224 | 1205141 | 9478.11 | 455 | 450 | 127.1 |
| D | 15 | 125 | 12597916 | 130789.74 | 331 | 316 | 96.3 |
| D | 2 | 153 | 176965 | 1833.99 | 331 | 316 | 96.3 |
| D | 11 | 245 | 84745 | 876.55 | 331 | 316 | 96.3 |
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 |  |