Observation information
- date-obs: 2017-10-15
- time-obs: 13:20:54.425100000
- date-end: 2017-10-15
- time-end: 15:23:32.425700000
- obs_id: G08_028T01_9000001618
- exposure: 4864.66367501
- 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_9000001618_11078cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001618_11078cztM0_level2_quad_clean.evt
|
| Size (bytes) | 536,523,840 | 94,121,280 |
| Size | 511.7 MB
| 89.8 MB
|
| Events in quadrant A | 3,731,651 | 596,132 |
| Events in quadrant B | 4,390,680 | 599,055 |
| Events in quadrant C | 3,256,527 | 595,193 |
| Events in quadrant D | 4,381,118 | 558,398 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15618 | 3 |
| B | 0 | 17765 | 2 |
| C | 0 | 14854 | 2 |
| D | 0 | 17794 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7193 | 136 | 1.890727% |
| B | 7193 | 340 | 4.726818% |
| C | 7193 | 40 | 0.556096% |
| D | 7193 | 227 | 3.155846% |
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 | 7358 | 7195 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7358 | 7195 | 85 | 85 | 1.16% | 1.18% |  |
| C | 7358 | 7195 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7358 | 7195 | 145 | 145 | 1.97% | 2.02% |  |
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 | 357589 | 2017.39 | 864 | 845 | 176.8 |
| A | 11 | 29 | 17224 | 92.62 | 864 | 845 | 176.8 |
| A | 1 | 162 | 13787 | 73.19 | 864 | 845 | 176.8 |
| B | 4 | 239 | 759467 | 4562.49 | 857 | 833 | 166.3 |
| B | 15 | 204 | 108738 | 648.95 | 857 | 833 | 166.3 |
| B | 0 | 219 | 45880 | 270.92 | 857 | 833 | 166.3 |
| C | 13 | 61 | 6151 | 27.04 | 833 | 838 | 196.5 |
| C | 8 | 128 | 3940 | 15.79 | 833 | 838 | 196.5 |
| C | 8 | 112 | 2503 | 8.47 | 833 | 838 | 196.5 |
| D | 10 | 253 | 547238 | 2715.06 | 826 | 801 | 201.3 |
| D | 8 | 195 | 282115 | 1397.75 | 826 | 801 | 201.3 |
| D | 1 | 52 | 123782 | 611.05 | 826 | 801 | 201.3 |
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 |  |