Observation information
- date-obs: 2018-05-22
- time-obs: 08:51:44.332400000
- date-end: 2018-05-22
- time-end: 11:00:48.328300000
- obs_id: G08_078T01_9000002110
- exposure: 3258.43959045
- sourceid: GRS 1915+105
- observer: ravibt
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_078T01_9000002110_14317cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14317cztM0_level2_quad_clean.evt
|
| Size (bytes) | 507,741,120 | 76,262,400 |
| Size | 484.2 MB
| 72.7 MB
|
| Events in quadrant A | 3,492,972 | 467,336 |
| Events in quadrant B | 3,547,193 | 468,117 |
| Events in quadrant C | 3,437,364 | 457,589 |
| Events in quadrant D | 4,438,126 | 442,258 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14337 | 2 |
| B | 0 | 14528 | 1 |
| C | 0 | 14042 | 1 |
| D | 0 | 17559 | 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 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6799 | 109 | 1.603177% |
| B | 6799 | 131 | 1.926754% |
| C | 6799 | 79 | 1.161936% |
| D | 6799 | 216 | 3.176938% |
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 | 7745 | 6800 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7745 | 6800 | 11 | 11 | 0.14% | 0.16% |  |
| C | 7745 | 6800 | 3 | 3 | 0.04% | 0.04% |  |
| D | 7745 | 6800 | 138 | 138 | 1.78% | 2.03% |  |
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 | 93759 | 538.53 | 857 | 842 | 172.5 |
| A | 12 | 189 | 49764 | 283.54 | 857 | 842 | 172.5 |
| A | 9 | 143 | 35024 | 198.11 | 857 | 842 | 172.5 |
| B | 0 | 229 | 144182 | 872.77 | 848 | 824 | 164.3 |
| B | 0 | 189 | 41517 | 247.74 | 848 | 824 | 164.3 |
| B | 0 | 219 | 23456 | 137.79 | 848 | 824 | 164.3 |
| C | 3 | 233 | 226756 | 1194.38 | 820 | 827 | 189.2 |
| C | 10 | 22 | 12132 | 59.76 | 820 | 827 | 189.2 |
| C | 13 | 61 | 5966 | 27.17 | 820 | 827 | 189.2 |
| D | 1 | 52 | 641232 | 3273.73 | 822 | 804 | 195.6 |
| D | 12 | 110 | 252637 | 1287.32 | 822 | 804 | 195.6 |
| D | 12 | 233 | 166127 | 845.1 | 822 | 804 | 195.6 |
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 |  |