Observation information
- date-obs: 2018-05-08
- time-obs: 15:15:55.714700000
- date-end: 2018-05-08
- time-end: 17:44:36.709800000
- obs_id: G08_028T01_9000002080
- exposure: 3771.43036413
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_028T01_9000002080_14115cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002080_14115cztM0_level2_quad_clean.evt
|
| Size (bytes) | 549,115,200 | 86,201,280 |
| Size | 523.7 MB
| 82.2 MB
|
| Events in quadrant A | 3,341,091 | 550,039 |
| Events in quadrant B | 3,802,147 | 544,978 |
| Events in quadrant C | 3,496,892 | 544,962 |
| Events in quadrant D | 5,552,673 | 520,239 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13836 | 2 |
| B | 0 | 15272 | 2 |
| C | 0 | 14272 | 2 |
| D | 0 | 20838 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24 | 0 |
| B | 0 | 24 | 0 |
| C | 0 | 24 | 0 |
| D | 0 | 24 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6447 | 140 | 2.171553% |
| B | 6447 | 231 | 3.583062% |
| C | 6447 | 120 | 1.861331% |
| D | 6447 | 443 | 6.871413% |
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 | 8923 | 6450 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8923 | 6450 | 33 | 33 | 0.37% | 0.51% |  |
| C | 8923 | 6450 | 4 | 4 | 0.04% | 0.06% |  |
| D | 8923 | 6450 | 343 | 343 | 3.84% | 5.32% |  |
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 | 0 | 226 | 7630 | 38.73 | 867 | 850 | 175.0 |
| A | 12 | 194 | 6587 | 32.78 | 867 | 850 | 175.0 |
| A | 3 | 137 | 5443 | 26.24 | 867 | 850 | 175.0 |
| B | 0 | 85 | 281144 | 1717.52 | 858 | 838 | 163.2 |
| B | 0 | 189 | 56133 | 338.81 | 858 | 838 | 163.2 |
| B | 10 | 16 | 43909 | 263.91 | 858 | 838 | 163.2 |
| C | 3 | 233 | 184451 | 931.92 | 844 | 852 | 197.0 |
| C | 10 | 22 | 14037 | 66.93 | 844 | 852 | 197.0 |
| C | 14 | 220 | 6872 | 30.56 | 844 | 852 | 197.0 |
| D | 10 | 157 | 1862778 | 9593.4 | 823 | 805 | 194.1 |
| D | 1 | 52 | 254195 | 1305.54 | 823 | 805 | 194.1 |
| D | 2 | 152 | 130281 | 667.1 | 823 | 805 | 194.1 |
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 |  |