Observation information
- date-obs: 2025-07-30
- time-obs: 00:11:47.897500000
- date-end: 2025-07-30
- time-end: 02:40:59.877000000
- obs_id: C09_011T06_9000006490
- exposure: 4011.56984961
- 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_9000006490_53210cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53210cztM0_level2_quad_clean.evt
|
| Size (bytes) | 813,631,680 | 87,612,480 |
| Size | 775.9 MB
| 83.6 MB
|
| Events in quadrant A | 4,100,913 | 645,566 |
| Events in quadrant B | 4,490,845 | 691,961 |
| Events in quadrant C | 7,881,280 | 494,205 |
| Events in quadrant D | 13,119,478 | 347,243 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17287 | 2 |
| B | 0 | 18134 | 2 |
| C | 0 | 28212 | 2 |
| D | 0 | 43679 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6794 | 250 | 3.679717% |
| B | 6794 | 376 | 5.534295% |
| C | 6794 | 1629 | 23.977039% |
| D | 6793 | 3205 | 47.180922% |
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 | 7924 | 6795 | 219 | 219 | 2.76% | 3.22% |  |
| B | 7924 | 6795 | 258 | 258 | 3.26% | 3.80% |  |
| C | 7924 | 6794 | 1462 | 1462 | 18.45% | 21.52% |  |
| D | 7923 | 6794 | 3569 | 3569 | 45.05% | 52.53% |  |
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 | 4 | 249 | 491886 | 2803.39 | 691 | 674 | 175.2 |
| A | 7 | 206 | 267232 | 1521.27 | 691 | 674 | 175.2 |
| A | 3 | 62 | 244006 | 1388.71 | 691 | 674 | 175.2 |
| B | 2 | 249 | 1015484 | 7032.83 | 689 | 666 | 144.3 |
| B | 0 | 197 | 223395 | 1543.54 | 689 | 666 | 144.3 |
| B | 4 | 81 | 126447 | 871.68 | 689 | 666 | 144.3 |
| C | 15 | 224 | 1942334 | 11679.04 | 598 | 592 | 166.3 |
| C | 4 | 5 | 1247045 | 7497.07 | 598 | 592 | 166.3 |
| C | 15 | 165 | 1080634 | 6496.15 | 598 | 592 | 166.3 |
| D | 15 | 125 | 9511210 | 59002.77 | 550 | 524 | 161.2 |
| D | 2 | 153 | 353537 | 2190.04 | 550 | 524 | 161.2 |
| D | 12 | 3 | 206088 | 1275.29 | 550 | 524 | 161.2 |
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 |  |