Observation information
- date-obs: 2025-08-03
- time-obs: 18:53:26.993200000
- date-end: 2025-08-03
- time-end: 21:06:41.975300000
- obs_id: C09_011T08_9000006492
- exposure: 3232.04489219
- 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_53281cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53281cztM0_level2_quad_clean.evt
|
| Size (bytes) | 685,569,600 | 86,230,080 |
| Size | 653.8 MB
| 82.2 MB
|
| Events in quadrant A | 3,455,922 | 633,085 |
| Events in quadrant B | 4,212,565 | 681,827 |
| Events in quadrant C | 11,954,334 | 314,800 |
| Events in quadrant D | 5,262,518 | 538,327 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14860 | 2 |
| B | 0 | 16970 | 2 |
| C | 0 | 39839 | 4 |
| D | 0 | 20029 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 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 | 6347 | 177 | 2.788719% |
| B | 6347 | 239 | 3.765559% |
| C | 6346 | 3417 | 53.844942% |
| D | 6346 | 628 | 9.895997% |
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 | 7551 | 6347 | 134 | 134 | 1.77% | 2.11% |  |
| B | 7551 | 6347 | 161 | 161 | 2.13% | 2.54% |  |
| C | 7551 | 6347 | 3258 | 3258 | 43.15% | 51.33% |  |
| D | 7551 | 6347 | 563 | 563 | 7.46% | 8.87% |  |
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 | 0 | 8 | 538977 | 3181.52 | 679 | 663 | 169.2 |
| A | 3 | 14 | 72904 | 426.96 | 679 | 663 | 169.2 |
| A | 4 | 159 | 31715 | 183.52 | 679 | 663 | 169.2 |
| B | 2 | 249 | 510268 | 3558.75 | 678 | 654 | 143.2 |
| B | 10 | 28 | 343238 | 2392.34 | 678 | 654 | 143.2 |
| B | 0 | 213 | 185646 | 1291.84 | 678 | 654 | 143.2 |
| C | 1 | 241 | 5153250 | 38839.57 | 476 | 473 | 132.7 |
| C | 10 | 22 | 1301066 | 9803.35 | 476 | 473 | 132.7 |
| C | 0 | 177 | 1010864 | 7615.92 | 476 | 473 | 132.7 |
| D | 9 | 19 | 795992 | 4360.58 | 639 | 610 | 182.4 |
| D | 3 | 12 | 700152 | 3835.15 | 639 | 610 | 182.4 |
| D | 12 | 3 | 339442 | 1857.6 | 639 | 610 | 182.4 |
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 |  |