Observation information
- date-obs: 2025-08-10
- time-obs: 01:59:38.739100000
- date-end: 2025-08-10
- time-end: 04:08:00.720800000
- obs_id: C09_011T09_9000006494
- exposure: 4823.88807464
- 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_011T09_9000006494_53374cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53374cztM0_level2_quad_clean.evt
|
| Size (bytes) | 789,520,320 | 100,428,480 |
| Size | 752.9 MB
| 95.8 MB
|
| Events in quadrant A | 5,223,741 | 681,378 |
| Events in quadrant B | 5,969,963 | 740,262 |
| Events in quadrant C | 13,129,294 | 433,414 |
| Events in quadrant D | 4,305,816 | 649,581 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21156 | 0 |
| B | 0 | 23026 | 0 |
| C | 0 | 44350 | 0 |
| D | 0 | 18344 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7702 | 480 | 6.232147% |
| B | 7703 | 569 | 7.386732% |
| C | 7703 | 3229 | 41.918733% |
| D | 7702 | 151 | 1.960530% |
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 | 7702 | 7702 | 382 | 382 | 4.96% | 4.96% |  |
| B | 7703 | 7703 | 251 | 251 | 3.26% | 3.26% |  |
| C | 7702 | 7702 | 3046 | 3046 | 39.55% | 39.55% |  |
| D | 7702 | 7702 | 117 | 117 | 1.52% | 1.52% |  |
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 | 15 | 174 | 1236353 | 6428.21 | 774 | 757 | 192.2 |
| A | 8 | 245 | 446389 | 2318.41 | 774 | 757 | 192.2 |
| A | 0 | 8 | 103387 | 533.93 | 774 | 757 | 192.2 |
| B | 4 | 206 | 830311 | 4962.09 | 782 | 752 | 167.2 |
| B | 10 | 254 | 594551 | 3551.87 | 782 | 752 | 167.2 |
| B | 10 | 28 | 409138 | 2442.8 | 782 | 752 | 167.2 |
| C | 15 | 178 | 8063458 | 46124.89 | 634 | 629 | 174.8 |
| C | 15 | 224 | 1305368 | 7464.0 | 634 | 629 | 174.8 |
| C | 1 | 241 | 749307 | 4282.95 | 634 | 629 | 174.8 |
| D | 11 | 245 | 472798 | 2185.46 | 765 | 732 | 216.0 |
| D | 2 | 249 | 179131 | 825.91 | 765 | 732 | 216.0 |
| D | 7 | 70 | 122054 | 561.67 | 765 | 732 | 216.0 |
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 |  |