Observation information
- date-obs: 2025-06-11
- time-obs: 12:09:24.495800000
- date-end: 2025-06-11
- time-end: 17:50:03.438800000
- obs_id: A13_037T01_9000006476
- exposure: 78.20211941
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52491cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52491cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,843,156,160 | 188,239,680 |
| Size | 2.6 GB
| 179.5 MB
|
| Events in quadrant A | 13,762,078 | 1,578,979 |
| Events in quadrant B | 13,935,594 | 1,751,886 |
| Events in quadrant C | 27,800,750 | 1,059,703 |
| Events in quadrant D | 48,292,542 | 6,817 |
Level1 data integrity
| 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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56616 | 2727 |
| B | 0 | 55057 | 785 |
| C | 0 | 98282 | 2659 |
| D | 0 | 159874 | 3296 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 390 | 6 |
| B | 0 | 388 | 4 |
| C | 0 | 387 | 3 |
| D | 0 | 387 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18857 | 1759 | 9.328101% |
| B | 18900 | 1470 | 7.777778% |
| C | 18858 | 6910 | 36.642274% |
| D | 18854 | 18803 | 99.729500% |
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 | 20439 | 18866 | 1132 | 1132 | 5.54% | 6.00% |  |
| B | 20440 | 18927 | 795 | 795 | 3.89% | 4.20% |  |
| C | 20440 | 18877 | 5486 | 5486 | 26.84% | 29.06% |  |
| D | 20439 | 18855 | 18143 | 18143 | 88.77% | 96.22% |  |
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 | 8 | 26 | 3306575 | 6826.26 | 1986 | 1935 | 484.1 |
| A | 3 | 45 | 1322855 | 2728.57 | 1986 | 1935 | 484.1 |
| A | 13 | 248 | 176034 | 359.63 | 1986 | 1935 | 484.1 |
| B | 10 | 44 | 2639315 | 6175.05 | 1993 | 1920 | 427.1 |
| B | 10 | 254 | 1977413 | 4625.31 | 1993 | 1920 | 427.1 |
| B | 4 | 81 | 376389 | 876.76 | 1993 | 1920 | 427.1 |
| C | 15 | 224 | 14341753 | 31967.67 | 1653 | 1635 | 448.6 |
| C | 2 | 12 | 3328626 | 7416.69 | 1653 | 1635 | 448.6 |
| C | 15 | 231 | 985386 | 2193.02 | 1653 | 1635 | 448.6 |
| D | 15 | 93 | 37299425 | 229188.97 | 563 | 536 | 162.7 |
| D | 6 | 42 | 7406579 | 45507.61 | 563 | 536 | 162.7 |
| D | 2 | 153 | 713136 | 4378.68 | 563 | 536 | 162.7 |
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 |  |