Observation information
- date-obs: 2025-06-18
- time-obs: 07:27:50.803100000
- date-end: 2025-06-18
- time-end: 09:28:47.066300000
- obs_id: C09_011T06_9000006478
- exposure: 5948.07990921
- 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_9000006478_52590cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52590cztM0_level2_quad_clean.evt
|
| Size (bytes) | 723,314,880 | 95,690,880 |
| Size | 689.8 MB
| 91.3 MB
|
| Events in quadrant A | 3,907,071 | 664,223 |
| Events in quadrant B | 8,943,137 | 588,459 |
| Events in quadrant C | 5,136,030 | 610,432 |
| Events in quadrant D | 8,226,932 | 528,414 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16941 | 0 |
| B | 0 | 31581 | 6 |
| C | 0 | 20556 | 3 |
| D | 0 | 29665 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7258 | 140 | 1.928906% |
| B | 7257 | 1560 | 21.496486% |
| C | 7257 | 448 | 6.173350% |
| D | 7256 | 1112 | 15.325248% |
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 | 7258 | 7258 | 122 | 122 | 1.68% | 1.68% |  |
| B | 7258 | 7258 | 1037 | 1037 | 14.29% | 14.29% |  |
| C | 7258 | 7258 | 440 | 440 | 6.06% | 6.06% |  |
| D | 7257 | 7256 | 1153 | 1153 | 15.89% | 15.89% |  |
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 | 4 | 249 | 149664 | 795.78 | 752 | 732 | 187.2 |
| A | 15 | 174 | 149127 | 792.91 | 752 | 732 | 187.2 |
| A | 5 | 243 | 111316 | 590.87 | 752 | 732 | 187.2 |
| B | 10 | 254 | 4616556 | 30685.73 | 705 | 682 | 150.4 |
| B | 7 | 0 | 368634 | 2446.1 | 705 | 682 | 150.4 |
| B | 10 | 128 | 288807 | 1915.42 | 705 | 682 | 150.4 |
| C | 15 | 248 | 1006334 | 5131.94 | 711 | 705 | 196.0 |
| C | 15 | 224 | 665421 | 3392.19 | 711 | 705 | 196.0 |
| C | 15 | 148 | 121884 | 618.4 | 711 | 705 | 196.0 |
| D | 8 | 176 | 1790396 | 9373.94 | 677 | 649 | 190.9 |
| D | 15 | 125 | 1588397 | 8315.95 | 677 | 649 | 190.9 |
| D | 6 | 42 | 470203 | 2459.33 | 677 | 649 | 190.9 |
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 |  |