Observation information
- date-obs: 2025-06-18
- time-obs: 16:03:56.174600000
- date-end: 2025-06-18
- time-end: 18:06:42.000400000
- obs_id: C09_011T06_9000006478
- exposure: 2327.89741719
- 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_9000006478_52596cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52596cztM0_level2_quad_clean.evt
|
| Size (bytes) | 990,216,000 | 67,867,200 |
| Size | 944.3 MB
| 64.7 MB
|
| Events in quadrant A | 3,544,340 | 609,147 |
| Events in quadrant B | 7,071,761 | 563,759 |
| Events in quadrant C | 12,246,185 | 221,844 |
| Events in quadrant D | 13,300,761 | 216,015 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15031 | 1 |
| B | 0 | 25412 | 1 |
| C | 0 | 40743 | 5 |
| D | 0 | 43869 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 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 | 6361 | 194 | 3.049835% |
| B | 6362 | 1096 | 17.227287% |
| C | 6361 | 4196 | 65.964471% |
| D | 6361 | 4374 | 68.762773% |
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 | 7365 | 6360 | 140 | 140 | 1.90% | 2.20% |  |
| B | 7366 | 6361 | 845 | 845 | 11.47% | 13.28% |  |
| C | 7365 | 6360 | 3613 | 3613 | 49.06% | 56.81% |  |
| D | 7365 | 6360 | 4196 | 4196 | 56.97% | 65.97% |  |
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 | 308618 | 1821.65 | 668 | 651 | 169.1 |
| A | 5 | 243 | 193245 | 1139.21 | 668 | 651 | 169.1 |
| A | 3 | 114 | 76525 | 448.8 | 668 | 651 | 169.1 |
| B | 10 | 254 | 3067886 | 22674.66 | 639 | 618 | 135.3 |
| B | 10 | 128 | 401203 | 2961.31 | 639 | 618 | 135.3 |
| B | 15 | 219 | 394191 | 2909.47 | 639 | 618 | 135.3 |
| C | 15 | 248 | 10638076 | 111741.41 | 338 | 335 | 95.2 |
| C | 15 | 233 | 79221 | 828.64 | 338 | 335 | 95.2 |
| C | 13 | 3 | 45472 | 474.13 | 338 | 335 | 95.2 |
| D | 12 | 1 | 3233403 | 26760.02 | 419 | 401 | 120.8 |
| D | 15 | 125 | 2771298 | 22935.11 | 419 | 401 | 120.8 |
| D | 8 | 176 | 2664711 | 22052.88 | 419 | 401 | 120.8 |
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 |  |