Observation information
- date-obs: 2021-11-06
- time-obs: 09:25:26.677600000
- date-end: 2021-11-06
- time-end: 11:45:59.671700000
- obs_id: A11_080T01_9000004756
- exposure: 4208.77506489
- sourceid: Cygnus X-1
- observer: ajayratheesh
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A11_080T01_9000004756_33027cztM0_level2.evt
| modeM0/AS1A11_080T01_9000004756_33027cztM0_level2_quad_clean.evt
|
| Size (bytes) | 725,996,160 | 88,848,000 |
| Size | 692.4 MB
| 84.7 MB
|
| Events in quadrant A | 2,621,866 | 630,218 |
| Events in quadrant B | 4,041,466 | 601,591 |
| Events in quadrant C | 5,940,403 | 545,274 |
| Events in quadrant D | 9,005,038 | 520,189 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 114 | 0 |
| B | 0 | 114 | 0 |
| C | 0 | 114 | 0 |
| D | 0 | 114 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 28 | 0 |
| B | 0 | 28 | 0 |
| C | 0 | 28 | 0 |
| D | 0 | 29 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11346 | 3 |
| B | 0 | 15563 | 2 |
| C | 0 | 21388 | 2 |
| D | 0 | 30623 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5610 | 5 | 0.089127% |
| B | 5610 | 387 | 6.898396% |
| C | 5610 | 985 | 17.557932% |
| D | 5610 | 1472 | 26.238859% |
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 | 7223 | 5611 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7222 | 5610 | 252 | 252 | 3.49% | 4.49% |  |
| C | 7223 | 5611 | 807 | 807 | 11.17% | 14.38% |  |
| D | 7223 | 5611 | 1590 | 1590 | 22.01% | 28.34% |  |
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 | 13 | 6 | 16502 | 115.67 | 671 | 658 | 137.0 |
| A | 13 | 254 | 11413 | 78.52 | 671 | 658 | 137.0 |
| A | 15 | 169 | 7865 | 52.62 | 671 | 658 | 137.0 |
| B | 5 | 172 | 1158159 | 9287.33 | 646 | 632 | 124.6 |
| B | 0 | 219 | 83829 | 667.52 | 646 | 632 | 124.6 |
| B | 5 | 31 | 69277 | 550.77 | 646 | 632 | 124.6 |
| C | 7 | 221 | 3344943 | 24309.36 | 592 | 598 | 137.6 |
| C | 0 | 10 | 185027 | 1340.58 | 592 | 598 | 137.6 |
| C | 1 | 241 | 62343 | 448.81 | 592 | 598 | 137.6 |
| D | 7 | 223 | 3282017 | 20678.55 | 601 | 589 | 158.7 |
| D | 8 | 195 | 2154259 | 13571.76 | 601 | 589 | 158.7 |
| D | 2 | 250 | 437675 | 2754.38 | 601 | 589 | 158.7 |
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 |  |