Observation information
- date-obs: 2025-07-23
- time-obs: 03:36:49.193700000
- date-end: 2025-07-23
- time-end: 05:47:22.177000000
- obs_id: C09_011T07_9000006488
- exposure: 4815.59475964
- 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_53108cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53108cztM0_level2_quad_clean.evt
|
| Size (bytes) | 736,948,800 | 86,304,960 |
| Size | 702.8 MB
| 82.3 MB
|
| Events in quadrant A | 9,552,090 | 484,803 |
| Events in quadrant B | 4,120,770 | 666,843 |
| Events in quadrant C | 8,513,541 | 451,763 |
| Events in quadrant D | 4,583,286 | 550,834 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32977 | 2 |
| B | 0 | 16903 | 2 |
| C | 0 | 29947 | 2 |
| D | 0 | 18453 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6583 | 1911 | 29.029318% |
| B | 6583 | 316 | 4.800243% |
| C | 6583 | 1960 | 29.773659% |
| D | 6583 | 429 | 6.516786% |
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 | 7708 | 6584 | 1657 | 1657 | 21.50% | 25.17% |  |
| B | 7708 | 6584 | 181 | 181 | 2.35% | 2.75% |  |
| C | 7708 | 6583 | 1846 | 1846 | 23.95% | 28.04% |  |
| D | 7708 | 6584 | 428 | 428 | 5.55% | 6.50% |  |
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 | 9 | 191 | 6609604 | 42575.2 | 620 | 605 | 155.2 |
| A | 0 | 8 | 119079 | 763.21 | 620 | 605 | 155.2 |
| A | 6 | 248 | 106846 | 684.4 | 620 | 605 | 155.2 |
| B | 10 | 128 | 405479 | 2864.34 | 670 | 649 | 141.3 |
| B | 2 | 249 | 286287 | 2021.01 | 670 | 649 | 141.3 |
| B | 10 | 254 | 151748 | 1069.09 | 670 | 649 | 141.3 |
| C | 1 | 241 | 2987229 | 18867.49 | 565 | 559 | 158.3 |
| C | 15 | 224 | 2256149 | 14249.09 | 565 | 559 | 158.3 |
| C | 0 | 240 | 287288 | 1811.33 | 565 | 559 | 158.3 |
| D | 12 | 3 | 1159910 | 6292.11 | 640 | 610 | 184.2 |
| D | 3 | 12 | 249086 | 1348.61 | 640 | 610 | 184.2 |
| D | 2 | 153 | 156841 | 847.94 | 640 | 610 | 184.2 |
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 |  |