Observation information
- date-obs: 2025-05-03
- time-obs: 22:57:03.333800000
- date-end: 2025-05-04
- time-end: 01:28:49.312300000
- obs_id: C09_011T05_9000006466
- exposure: 5171.08312255
- 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_011T05_9000006466_51917cztM0_level2.fits
| modeM0/AS1C09_011T05_9000006466_51917cztM0_level2_quad_clean.evt
|
| Size (bytes) | 731,203,200 | 91,344,960 |
| Size | 697.3 MB
| 87.1 MB
|
| Events in quadrant A | 7,235,003 | 587,099 |
| Events in quadrant B | 5,792,155 | 640,108 |
| Events in quadrant C | 4,582,897 | 614,760 |
| Events in quadrant D | 8,927,163 | 446,134 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26317 | 2 |
| B | 0 | 22066 | 2 |
| C | 0 | 18607 | 2 |
| D | 0 | 31310 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6846 | 768 | 11.218230% |
| B | 6847 | 798 | 11.654739% |
| C | 6847 | 305 | 4.454506% |
| D | 6847 | 1866 | 27.252811% |
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 | 9106 | 6849 | 584 | 584 | 6.41% | 8.53% |  |
| B | 9107 | 6849 | 528 | 528 | 5.80% | 7.71% |  |
| C | 9107 | 6849 | 205 | 205 | 2.25% | 2.99% |  |
| D | 9107 | 6849 | 1491 | 1491 | 16.37% | 21.77% |  |
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 | 12 | 3 | 1773974 | 10427.13 | 682 | 667 | 170.1 |
| A | 7 | 64 | 709252 | 4166.51 | 682 | 667 | 170.1 |
| A | 4 | 249 | 532440 | 3126.85 | 682 | 667 | 170.1 |
| B | 4 | 206 | 1831536 | 12615.4 | 685 | 661 | 145.1 |
| B | 12 | 32 | 295568 | 2032.02 | 685 | 661 | 145.1 |
| B | 4 | 171 | 266496 | 1831.7 | 685 | 661 | 145.1 |
| C | 15 | 248 | 245475 | 1285.43 | 686 | 680 | 190.4 |
| C | 15 | 158 | 228908 | 1198.44 | 686 | 680 | 190.4 |
| C | 13 | 3 | 170998 | 894.35 | 686 | 680 | 190.4 |
| D | 15 | 94 | 1903621 | 11088.3 | 579 | 555 | 171.6 |
| D | 12 | 17 | 1627518 | 9479.58 | 579 | 555 | 171.6 |
| D | 2 | 172 | 1336863 | 7786.06 | 579 | 555 | 171.6 |
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 |  |