Observation information
- date-obs: 2025-07-27
- time-obs: 18:49:08.323200000
- date-end: 2025-07-27
- time-end: 20:50:26.305500000
- obs_id: C09_011T06_9000006490
- exposure: 6.59242558479
- 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_53177cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53177cztM0_level2_quad_clean.evt
|
| Size (bytes) | 918,694,080 | 69,431,040 |
| Size | 876.1 MB
| 66.2 MB
|
| Events in quadrant A | 5,383,578 | 541,790 |
| Events in quadrant B | 5,150,563 | 598,159 |
| Events in quadrant C | 6,840,591 | 527,159 |
| Events in quadrant D | 16,150,767 | 505 |
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 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20382 | 1 |
| B | 0 | 19568 | 1 |
| C | 0 | 24669 | 1 |
| D | 0 | 52251 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6223 | 728 | 11.698538% |
| B | 6223 | 550 | 8.838181% |
| C | 6223 | 687 | 11.039691% |
| D | 6223 | 6219 | 99.935722% |
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 | 7278 | 6224 | 680 | 680 | 9.34% | 10.93% |  |
| B | 7278 | 6223 | 424 | 424 | 5.83% | 6.81% |  |
| C | 7278 | 6223 | 698 | 698 | 9.59% | 11.22% |  |
| D | 7277 | 6222 | 5937 | 5937 | 81.59% | 95.42% |  |
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 | 12 | 3 | 1224215 | 7809.83 | 617 | 600 | 156.7 |
| A | 3 | 62 | 639595 | 4078.44 | 617 | 600 | 156.7 |
| A | 12 | 80 | 378455 | 2411.69 | 617 | 600 | 156.7 |
| B | 10 | 191 | 1733578 | 13227.47 | 619 | 599 | 131.0 |
| B | 10 | 254 | 266230 | 2027.51 | 619 | 599 | 131.0 |
| B | 4 | 81 | 216426 | 1647.36 | 619 | 599 | 131.0 |
| C | 0 | 240 | 1966822 | 11718.58 | 607 | 603 | 167.8 |
| C | 15 | 224 | 1495504 | 8909.55 | 607 | 603 | 167.8 |
| C | 10 | 22 | 198623 | 1180.19 | 607 | 603 | 167.8 |
| D | 15 | 125 | 15292410 | 410297.7 | 121 | 115 | 37.3 |
| D | 13 | 170 | 147081 | 3943.15 | 121 | 115 | 37.3 |
| D | 10 | 117 | 34541 | 923.66 | 121 | 115 | 37.3 |
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 |  |