Observation information
- date-obs: 2025-06-14
- time-obs: 23:18:36.711400000
- date-end: 2025-06-15
- time-end: 01:40:24.675300000
- obs_id: C09_011T06_9000006478
- exposure: 4840.36869836
- 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_52541cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52541cztM0_level2_quad_clean.evt
|
| Size (bytes) | 780,681,600 | 87,140,160 |
| Size | 744.5 MB
| 83.1 MB
|
| Events in quadrant A | 3,359,585 | 646,408 |
| Events in quadrant B | 6,195,200 | 638,523 |
| Events in quadrant C | 8,279,914 | 467,559 |
| Events in quadrant D | 10,546,526 | 419,565 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15022 | 2 |
| B | 0 | 22999 | 2 |
| C | 0 | 29290 | 2 |
| D | 0 | 36027 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6685 | 88 | 1.316380% |
| B | 6685 | 742 | 11.099476% |
| C | 6685 | 1815 | 27.150337% |
| D | 6685 | 2184 | 32.670157% |
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 | 7845 | 6686 | 53 | 53 | 0.68% | 0.79% |  |
| B | 7845 | 6686 | 519 | 519 | 6.62% | 7.76% |  |
| C | 7845 | 6686 | 1574 | 1574 | 20.06% | 23.54% |  |
| D | 7845 | 6686 | 2042 | 2042 | 26.03% | 30.54% |  |
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 | 46 | 158248 | 892.85 | 694 | 678 | 176.5 |
| A | 6 | 233 | 124731 | 702.93 | 694 | 678 | 176.5 |
| A | 15 | 174 | 69161 | 388.05 | 694 | 678 | 176.5 |
| B | 10 | 44 | 1564795 | 11185.61 | 664 | 642 | 139.8 |
| B | 10 | 254 | 891231 | 6368.8 | 664 | 642 | 139.8 |
| B | 4 | 81 | 270618 | 1930.66 | 664 | 642 | 139.8 |
| C | 15 | 248 | 4549434 | 28315.91 | 575 | 567 | 160.6 |
| C | 13 | 3 | 579686 | 3604.92 | 575 | 567 | 160.6 |
| C | 12 | 254 | 424894 | 2641.36 | 575 | 567 | 160.6 |
| D | 8 | 176 | 2813793 | 16787.0 | 582 | 555 | 167.6 |
| D | 6 | 42 | 1789204 | 10673.13 | 582 | 555 | 167.6 |
| D | 12 | 17 | 1435205 | 8560.77 | 582 | 555 | 167.6 |
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 |  |