Observation information
- date-obs: 2025-08-08
- time-obs: 15:20:32.338200000
- date-end: 2025-08-08
- time-end: 17:23:52.016200000
- obs_id: C09_011T08_9000006492
- exposure: 71.2928960919
- 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_9000006492_53353cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53353cztM0_level2_quad_clean.evt
|
| Size (bytes) | 896,215,680 | 66,369,600 |
| Size | 854.7 MB
| 63.3 MB
|
| Events in quadrant A | 3,843,684 | 626,708 |
| Events in quadrant B | 4,373,205 | 644,399 |
| Events in quadrant C | 11,664,702 | 294,726 |
| Events in quadrant D | 12,807,438 | 6,283 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15675 | 1 |
| B | 0 | 17318 | 1 |
| C | 0 | 38944 | 2 |
| D | 0 | 42370 | 1 |
| 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 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6261 | 193 | 3.082575% |
| B | 6261 | 442 | 7.059575% |
| C | 6260 | 3427 | 54.744409% |
| D | 6260 | 6213 | 99.249201% |
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 | 7401 | 6261 | 128 | 128 | 1.73% | 2.04% |  |
| B | 7401 | 6261 | 306 | 306 | 4.13% | 4.89% |  |
| C | 7400 | 6260 | 3395 | 3395 | 45.88% | 54.23% |  |
| D | 7399 | 6259 | 3643 | 3643 | 49.24% | 58.20% |  |
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 | 15 | 174 | 360533 | 2123.3 | 673 | 657 | 169.5 |
| A | 3 | 62 | 146967 | 863.24 | 673 | 657 | 169.5 |
| A | 3 | 14 | 114220 | 670.03 | 673 | 657 | 169.5 |
| B | 10 | 247 | 566236 | 4043.49 | 657 | 634 | 139.9 |
| B | 5 | 185 | 255149 | 1819.53 | 657 | 634 | 139.9 |
| B | 0 | 171 | 170327 | 1213.14 | 657 | 634 | 139.9 |
| C | 15 | 178 | 5111160 | 39653.75 | 466 | 463 | 128.9 |
| C | 15 | 224 | 1827711 | 14177.57 | 466 | 463 | 128.9 |
| C | 15 | 158 | 1090324 | 8456.2 | 466 | 463 | 128.9 |
| D | 2 | 62 | 11690476 | 262445.12 | 147 | 140 | 44.5 |
| D | 6 | 239 | 235200 | 5277.04 | 147 | 140 | 44.5 |
| D | 11 | 245 | 79604 | 1783.95 | 147 | 140 | 44.5 |
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 |  |