Observation information
- date-obs: 2017-11-27
- time-obs: 19:23:59.845200000
- date-end: 2017-11-27
- time-end: 21:31:26.843200000
- obs_id: G08_075T01_9000001726
- exposure: 3777.41624156
- sourceid: Cygnus X-1
- observer: ravibt
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_075T01_9000001726_11718cztM0_level2.evt
| modeM0/AS1G08_075T01_9000001726_11718cztM0_level2_quad_clean.evt
|
| Size (bytes) | 537,603,840 | 78,131,520 |
| Size | 512.7 MB
| 74.5 MB
|
| Events in quadrant A | 4,577,041 | 479,605 |
| Events in quadrant B | 3,980,032 | 479,697 |
| Events in quadrant C | 3,044,482 | 480,971 |
| Events in quadrant D | 4,220,895 | 453,697 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18282 | 2 |
| B | 0 | 16255 | 1 |
| C | 0 | 13699 | 1 |
| D | 0 | 17360 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6772 | 113 | 1.668636% |
| B | 6772 | 245 | 3.617838% |
| C | 6772 | 33 | 0.487301% |
| D | 6772 | 317 | 4.681040% |
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 | 7648 | 6774 | 32 | 32 | 0.42% | 0.47% |  |
| B | 7648 | 6774 | 125 | 125 | 1.63% | 1.85% |  |
| C | 7648 | 6774 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7648 | 6774 | 233 | 233 | 3.05% | 3.44% |  |
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 | 15 | 1217484 | 7499.33 | 795 | 777 | 162.2 |
| A | 1 | 162 | 112273 | 687.22 | 795 | 777 | 162.2 |
| A | 1 | 178 | 58249 | 354.24 | 795 | 777 | 162.2 |
| B | 4 | 239 | 578199 | 3800.2 | 788 | 769 | 151.9 |
| B | 3 | 64 | 117085 | 765.5 | 788 | 769 | 151.9 |
| B | 10 | 245 | 73949 | 481.61 | 788 | 769 | 151.9 |
| C | 14 | 234 | 5884 | 28.07 | 779 | 781 | 181.8 |
| C | 13 | 61 | 5596 | 26.48 | 779 | 781 | 181.8 |
| C | 12 | 4 | 2500 | 9.46 | 779 | 781 | 181.8 |
| D | 1 | 52 | 847236 | 4561.99 | 762 | 740 | 185.6 |
| D | 7 | 80 | 240611 | 1292.73 | 762 | 740 | 185.6 |
| D | 13 | 104 | 61780 | 328.96 | 762 | 740 | 185.6 |
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 |  |