Observation information
- date-obs: 2025-05-18
- time-obs: 01:45:59.519300000
- date-end: 2025-05-18
- time-end: 07:20:11.474500000
- obs_id: C09_011T07_9000006470
- exposure: 2204.5968377
- 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_011T07_9000006470_52128cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52128cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,786,532,480 | 201,182,400 |
| Size | 2.6 GB
| 191.9 MB
|
| Events in quadrant A | 11,919,660 | 1,677,365 |
| Events in quadrant B | 14,473,139 | 1,792,057 |
| Events in quadrant C | 28,629,348 | 1,125,975 |
| Events in quadrant D | 46,666,358 | 187,525 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 385 | 3 |
| B | 0 | 384 | 2 |
| C | 0 | 385 | 3 |
| D | 0 | 386 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 10 | 1 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 48716 | 135 |
| B | 0 | 56494 | 197 |
| C | 0 | 98578 | 372 |
| D | 0 | 152225 | 596 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18975 | 825 | 4.347826% |
| B | 18972 | 1006 | 5.302551% |
| C | 18964 | 6967 | 36.738030% |
| D | 18959 | 17126 | 90.331769% |
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 | 20052 | 18989 | 507 | 507 | 2.53% | 2.67% |  |
| B | 20053 | 18986 | 404 | 404 | 2.01% | 2.13% |  |
| C | 20053 | 18981 | 5412 | 5412 | 26.99% | 28.51% |  |
| D | 20053 | 18963 | 16069 | 16069 | 80.13% | 84.74% |  |
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 | 7 | 206 | 1274336 | 2597.38 | 1983 | 1929 | 489.9 |
| A | 4 | 249 | 758821 | 1545.05 | 1983 | 1929 | 489.9 |
| A | 4 | 3 | 555669 | 1130.35 | 1983 | 1929 | 489.9 |
| B | 5 | 172 | 3278096 | 7841.91 | 1967 | 1896 | 417.8 |
| B | 5 | 185 | 795291 | 1899.07 | 1967 | 1896 | 417.8 |
| B | 12 | 32 | 629537 | 1502.32 | 1967 | 1896 | 417.8 |
| C | 15 | 224 | 15725744 | 34467.51 | 1654 | 1639 | 456.2 |
| C | 15 | 193 | 2004828 | 4391.02 | 1654 | 1639 | 456.2 |
| C | 15 | 192 | 1422972 | 3115.59 | 1654 | 1639 | 456.2 |
| D | 6 | 42 | 23591157 | 92579.88 | 883 | 843 | 254.8 |
| D | 15 | 94 | 16039829 | 62944.79 | 883 | 843 | 254.8 |
| D | 8 | 176 | 1068794 | 4191.16 | 883 | 843 | 254.8 |
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 |  |