Observation information
- date-obs: 2025-07-26
- time-obs: 09:51:14.585200000
- date-end: 2025-07-26
- time-end: 11:53:15.570800000
- obs_id: C09_011T07_9000006488
- exposure: 5073.08399951
- 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_53156cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53156cztM0_level2_quad_clean.evt
|
| Size (bytes) | 767,122,560 | 94,325,760 |
| Size | 731.6 MB
| 90.0 MB
|
| Events in quadrant A | 5,134,089 | 649,081 |
| Events in quadrant B | 7,154,265 | 651,428 |
| Events in quadrant C | 11,272,208 | 440,195 |
| Events in quadrant D | 4,269,244 | 605,329 |
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 | 20430 | 0 |
| B | 0 | 26433 | 0 |
| C | 0 | 38604 | 0 |
| D | 0 | 17952 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7321 | 395 | 5.395438% |
| B | 7322 | 978 | 13.357006% |
| C | 7322 | 2559 | 34.949467% |
| D | 7322 | 108 | 1.475007% |
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 | 7321 | 7321 | 357 | 357 | 4.88% | 4.88% |  |
| B | 7322 | 7322 | 719 | 719 | 9.82% | 9.82% |  |
| C | 7322 | 7322 | 2305 | 2305 | 31.48% | 31.48% |  |
| D | 7322 | 7322 | 115 | 115 | 1.57% | 1.57% |  |
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 | 12 | 3 | 1022905 | 5540.03 | 737 | 717 | 184.5 |
| A | 0 | 8 | 482659 | 2612.02 | 737 | 717 | 184.5 |
| A | 3 | 62 | 157152 | 847.84 | 737 | 717 | 184.5 |
| B | 10 | 254 | 3471045 | 22506.83 | 716 | 693 | 154.2 |
| B | 2 | 249 | 401359 | 2598.5 | 716 | 693 | 154.2 |
| B | 4 | 81 | 132748 | 856.43 | 716 | 693 | 154.2 |
| C | 1 | 241 | 3927731 | 22920.3 | 617 | 611 | 171.3 |
| C | 15 | 157 | 1793947 | 10466.65 | 617 | 611 | 171.3 |
| C | 15 | 224 | 1620609 | 9454.98 | 617 | 611 | 171.3 |
| D | 8 | 176 | 315233 | 1546.28 | 717 | 684 | 203.4 |
| D | 12 | 3 | 208847 | 1023.3 | 717 | 684 | 203.4 |
| D | 10 | 172 | 164210 | 803.87 | 717 | 684 | 203.4 |
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 |  |