Observation information
- date-obs: 2025-07-05
- time-obs: 14:14:47.707600000
- date-end: 2025-07-05
- time-end: 16:09:16.692900000
- obs_id: C09_011T07_9000006480
- exposure: 2669.68418884
- 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_9000006480_52847cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52847cztM0_level2_quad_clean.evt
|
| Size (bytes) | 768,251,520 | 72,092,160 |
| Size | 732.7 MB
| 68.8 MB
|
| Events in quadrant A | 5,705,142 | 537,436 |
| Events in quadrant B | 6,270,076 | 500,827 |
| Events in quadrant C | 4,901,412 | 503,259 |
| Events in quadrant D | 11,116,640 | 238,417 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 118 | 0 |
| B | 0 | 118 | 0 |
| C | 0 | 118 | 0 |
| D | 0 | 118 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20981 | 1 |
| B | 0 | 22620 | 1 |
| C | 0 | 18797 | 1 |
| D | 0 | 36960 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5754 | 562 | 9.767119% |
| B | 5754 | 1154 | 20.055613% |
| C | 5753 | 662 | 11.507040% |
| D | 5755 | 3282 | 57.028671% |
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 | 6869 | 5754 | 360 | 360 | 5.24% | 6.26% |  |
| B | 6869 | 5755 | 783 | 783 | 11.40% | 13.61% |  |
| C | 6869 | 5755 | 429 | 429 | 6.25% | 7.45% |  |
| D | 6870 | 5754 | 2892 | 2892 | 42.10% | 50.26% |  |
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 | 1314245 | 8667.27 | 593 | 581 | 151.6 |
| A | 3 | 79 | 435202 | 2867.54 | 593 | 581 | 151.6 |
| A | 3 | 62 | 309725 | 2039.67 | 593 | 581 | 151.6 |
| B | 8 | 3 | 2828618 | 23256.43 | 571 | 554 | 121.6 |
| B | 10 | 254 | 450069 | 3696.56 | 571 | 554 | 121.6 |
| B | 0 | 213 | 268164 | 2200.68 | 571 | 554 | 121.6 |
| C | 15 | 224 | 1855116 | 11327.02 | 581 | 574 | 163.7 |
| C | 7 | 80 | 351150 | 2141.22 | 581 | 574 | 163.7 |
| C | 4 | 5 | 78307 | 474.77 | 581 | 574 | 163.7 |
| D | 12 | 2 | 7866563 | 68776.04 | 393 | 375 | 114.4 |
| D | 8 | 176 | 762168 | 6660.55 | 393 | 375 | 114.4 |
| D | 3 | 12 | 291871 | 2548.62 | 393 | 375 | 114.4 |
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 |  |