Observation information
- date-obs: 2025-07-07
- time-obs: 04:20:34.400700000
- date-end: 2025-07-07
- time-end: 06:19:37.384000000
- obs_id: C09_011T08_9000006482
- exposure: 1529.67293334
- 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_011T08_9000006482_52870cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52870cztM0_level2_quad_clean.evt
|
| Size (bytes) | 874,016,640 | 73,082,880 |
| Size | 833.5 MB
| 69.7 MB
|
| Events in quadrant A | 13,951,848 | 140,077 |
| Events in quadrant B | 7,957,690 | 530,445 |
| Events in quadrant C | 3,849,167 | 580,827 |
| Events in quadrant D | 6,104,223 | 519,155 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 45732 | 1 |
| B | 0 | 27999 | 1 |
| C | 0 | 16099 | 1 |
| D | 0 | 22670 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 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 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6333 | 5005 | 79.030475% |
| B | 6334 | 1578 | 24.913167% |
| C | 6334 | 241 | 3.804863% |
| D | 6334 | 847 | 13.372277% |
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 | 7143 | 6333 | 4435 | 4435 | 62.09% | 70.03% |  |
| B | 7144 | 6335 | 1164 | 1164 | 16.29% | 18.37% |  |
| C | 7144 | 6335 | 184 | 184 | 2.58% | 2.90% |  |
| D | 7144 | 6335 | 730 | 730 | 10.22% | 11.52% |  |
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 | 11339493 | 105058.49 | 417 | 407 | 107.9 |
| A | 3 | 62 | 373184 | 3453.84 | 417 | 407 | 107.9 |
| A | 15 | 174 | 192477 | 1779.56 | 417 | 407 | 107.9 |
| B | 8 | 3 | 5058169 | 38418.76 | 616 | 595 | 131.6 |
| B | 5 | 185 | 114215 | 863.09 | 616 | 595 | 131.6 |
| B | 8 | 128 | 59571 | 448.0 | 616 | 595 | 131.6 |
| C | 2 | 12 | 650692 | 3640.8 | 638 | 630 | 178.5 |
| C | 7 | 80 | 221458 | 1236.79 | 638 | 630 | 178.5 |
| C | 13 | 3 | 204060 | 1139.35 | 638 | 630 | 178.5 |
| D | 8 | 176 | 1725277 | 9524.05 | 619 | 589 | 181.1 |
| D | 12 | 17 | 636905 | 3513.86 | 619 | 589 | 181.1 |
| D | 15 | 125 | 263805 | 1453.53 | 619 | 589 | 181.1 |
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 |  |