Observation information
- date-obs: 2021-11-09
- time-obs: 00:20:26.539900000
- date-end: 2021-11-09
- time-end: 02:25:32.533900000
- obs_id: A11_080T01_9000004756
- exposure: 2877.61981156
- 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_33066cztM0_level2.evt
| modeM0/AS1A11_080T01_9000004756_33066cztM0_level2_quad_clean.evt
|
| Size (bytes) | 554,247,360 | 65,926,080 |
| Size | 528.6 MB
| 62.9 MB
|
| Events in quadrant A | 2,646,006 | 417,297 |
| Events in quadrant B | 3,543,425 | 407,906 |
| Events in quadrant C | 3,196,666 | 408,649 |
| Events in quadrant D | 7,008,569 | 358,550 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 17 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11628 | 3 |
| B | 0 | 14151 | 2 |
| C | 0 | 13222 | 2 |
| D | 0 | 24989 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5764 | 12 | 0.208189% |
| B | 5764 | 219 | 3.799445% |
| C | 5764 | 75 | 1.301180% |
| D | 5764 | 810 | 14.052741% |
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 | 7106 | 5765 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7106 | 5765 | 144 | 144 | 2.03% | 2.50% |  |
| C | 7106 | 5765 | 55 | 55 | 0.77% | 0.95% |  |
| D | 7106 | 5765 | 708 | 708 | 9.96% | 12.28% |  |
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 | 10 | 248 | 13249 | 91.53 | 677 | 663 | 137.5 |
| A | 13 | 254 | 11201 | 76.63 | 677 | 663 | 137.5 |
| A | 13 | 6 | 6536 | 42.71 | 677 | 663 | 137.5 |
| B | 5 | 172 | 592451 | 4623.24 | 666 | 652 | 128.0 |
| B | 15 | 85 | 88360 | 685.19 | 666 | 652 | 128.0 |
| B | 0 | 189 | 83792 | 649.51 | 666 | 652 | 128.0 |
| C | 7 | 221 | 220965 | 1441.02 | 656 | 663 | 152.9 |
| C | 0 | 10 | 190317 | 1240.55 | 656 | 663 | 152.9 |
| C | 1 | 241 | 174756 | 1138.76 | 656 | 663 | 152.9 |
| D | 2 | 250 | 1197372 | 7429.43 | 610 | 596 | 161.1 |
| D | 8 | 195 | 1143756 | 7096.59 | 610 | 596 | 161.1 |
| D | 7 | 223 | 1071191 | 6646.11 | 610 | 596 | 161.1 |
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 |  |