Observation information
- date-obs: 2025-07-29
- time-obs: 22:30:07.911500000
- date-end: 2025-07-30
- time-end: 00:51:26.888900000
- obs_id: C09_011T06_9000006490
- exposure: 1930.86609566
- 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_53209cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53209cztM0_level2_quad_clean.evt
|
| Size (bytes) | 803,946,240 | 80,334,720 |
| Size | 766.7 MB
| 76.6 MB
|
| Events in quadrant A | 3,303,318 | 628,572 |
| Events in quadrant B | 4,452,466 | 663,211 |
| Events in quadrant C | 6,718,455 | 527,367 |
| Events in quadrant D | 14,794,295 | 170,994 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14681 | 2 |
| B | 0 | 17580 | 2 |
| C | 0 | 24382 | 2 |
| D | 0 | 48281 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6336 | 123 | 1.941288% |
| B | 6336 | 388 | 6.123737% |
| C | 6336 | 1046 | 16.508838% |
| D | 6335 | 4724 | 74.569850% |
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 | 7541 | 6337 | 85 | 85 | 1.13% | 1.34% |  |
| B | 7541 | 6337 | 292 | 292 | 3.87% | 4.61% |  |
| C | 7541 | 6336 | 922 | 922 | 12.23% | 14.55% |  |
| D | 7540 | 6336 | 4950 | 4950 | 65.65% | 78.12% |  |
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 | 295937 | 1792.55 | 661 | 644 | 164.7 |
| A | 0 | 8 | 160696 | 971.58 | 661 | 644 | 164.7 |
| A | 15 | 174 | 54740 | 328.38 | 661 | 644 | 164.7 |
| B | 2 | 249 | 1271391 | 9304.2 | 656 | 635 | 136.6 |
| B | 4 | 81 | 240503 | 1756.26 | 656 | 635 | 136.6 |
| B | 10 | 247 | 102571 | 746.35 | 656 | 635 | 136.6 |
| C | 15 | 224 | 2212528 | 13126.53 | 604 | 600 | 168.5 |
| C | 4 | 5 | 934277 | 5540.84 | 604 | 600 | 168.5 |
| C | 15 | 165 | 331196 | 1961.9 | 604 | 600 | 168.5 |
| D | 15 | 125 | 10826637 | 86003.24 | 421 | 400 | 125.9 |
| D | 2 | 62 | 830927 | 6597.68 | 421 | 400 | 125.9 |
| D | 2 | 153 | 287563 | 2281.21 | 421 | 400 | 125.9 |
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 |  |