Observation information
- date-obs: 2025-08-13
- time-obs: 16:42:56.991300000
- date-end: 2025-08-13
- time-end: 18:49:09.972600000
- obs_id: C09_011T09_9000006494
- exposure: 540.85233587
- 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_53428cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53428cztM0_level2_quad_clean.evt
|
| Size (bytes) | 972,135,360 | 71,208,000 |
| Size | 927.1 MB
| 67.9 MB
|
| Events in quadrant A | 5,700,033 | 587,915 |
| Events in quadrant B | 6,758,217 | 598,830 |
| Events in quadrant C | 16,365,803 | 53,594 |
| Events in quadrant D | 6,659,197 | 462,525 |
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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21423 | 2 |
| B | 0 | 24625 | 2 |
| C | 0 | 53094 | 8 |
| D | 0 | 24252 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6494 | 732 | 11.271943% |
| B | 6494 | 1066 | 16.415152% |
| C | 6493 | 6017 | 92.669028% |
| D | 6493 | 1386 | 21.346065% |
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 | 7574 | 6495 | 610 | 610 | 8.05% | 9.39% |  |
| B | 7574 | 6495 | 536 | 536 | 7.08% | 8.25% |  |
| C | 7573 | 6494 | 5869 | 5869 | 77.50% | 90.38% |  |
| D | 7573 | 6494 | 1070 | 1070 | 14.13% | 16.48% |  |
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 | 3 | 63 | 2512288 | 15159.79 | 668 | 653 | 165.7 |
| A | 15 | 174 | 209216 | 1258.85 | 668 | 653 | 165.7 |
| A | 3 | 14 | 57355 | 342.24 | 668 | 653 | 165.7 |
| B | 10 | 254 | 1249881 | 9134.57 | 655 | 635 | 136.8 |
| B | 4 | 171 | 624945 | 4565.0 | 655 | 635 | 136.8 |
| B | 10 | 28 | 569836 | 4162.04 | 655 | 635 | 136.8 |
| C | 7 | 64 | 10194910 | 156642.43 | 235 | 232 | 65.1 |
| C | 9 | 38 | 1988905 | 30556.2 | 235 | 232 | 65.1 |
| C | 15 | 224 | 1157996 | 17789.18 | 235 | 232 | 65.1 |
| D | 2 | 172 | 1505934 | 8910.37 | 598 | 574 | 168.9 |
| D | 8 | 176 | 905668 | 5357.34 | 598 | 574 | 168.9 |
| D | 13 | 153 | 771518 | 4563.29 | 598 | 574 | 168.9 |
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 |  |