Observation information
- date-obs: 2025-07-05
- time-obs: 12:23:57.721100000
- date-end: 2025-07-05
- time-end: 14:27:41.705700000
- obs_id: C09_011T07_9000006480
- exposure: 2866.09507436
- 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_9000006480_52846cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52846cztM0_level2_quad_clean.evt
|
| Size (bytes) | 863,925,120 | 77,685,120 |
| Size | 823.9 MB
| 74.1 MB
|
| Events in quadrant A | 5,815,967 | 588,972 |
| Events in quadrant B | 7,824,025 | 542,597 |
| Events in quadrant C | 5,640,519 | 524,422 |
| Events in quadrant D | 12,217,870 | 260,787 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21523 | 1 |
| B | 0 | 27587 | 1 |
| C | 0 | 21213 | 1 |
| D | 0 | 40588 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6234 | 565 | 9.063202% |
| B | 6235 | 1375 | 22.052927% |
| C | 6235 | 884 | 14.178027% |
| D | 6235 | 3645 | 58.460305% |
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 | 7424 | 6235 | 436 | 436 | 5.87% | 6.99% |  |
| B | 7425 | 6236 | 936 | 936 | 12.61% | 15.01% |  |
| C | 7425 | 6236 | 709 | 709 | 9.55% | 11.37% |  |
| D | 7425 | 6235 | 3107 | 3107 | 41.85% | 49.83% |  |
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 | 3 | 62 | 1329019 | 8092.32 | 651 | 635 | 164.2 |
| A | 9 | 191 | 1021457 | 6218.7 | 651 | 635 | 164.2 |
| A | 4 | 238 | 246074 | 1495.18 | 651 | 635 | 164.2 |
| B | 8 | 3 | 4219234 | 33118.25 | 606 | 585 | 127.4 |
| B | 0 | 213 | 349171 | 2736.55 | 606 | 585 | 127.4 |
| B | 7 | 0 | 213231 | 1669.36 | 606 | 585 | 127.4 |
| C | 15 | 224 | 2524833 | 14721.43 | 619 | 614 | 171.5 |
| C | 4 | 5 | 365898 | 2130.36 | 619 | 614 | 171.5 |
| C | 12 | 249 | 68935 | 398.45 | 619 | 614 | 171.5 |
| D | 12 | 2 | 5673648 | 43326.41 | 451 | 430 | 130.9 |
| D | 8 | 176 | 3700932 | 28260.76 | 451 | 430 | 130.9 |
| D | 10 | 172 | 280357 | 2137.8 | 451 | 430 | 130.9 |
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 |  |