Observation information
- date-obs: 2017-10-31
- time-obs: 21:15:52.861600000
- date-end: 2017-10-31
- time-end: 23:18:28.864200000
- obs_id: G08_028T01_9000001656
- exposure: 2841.07289469
- 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_9000001656_11320cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001656_11320cztM0_level2_quad_clean.evt
|
| Size (bytes) | 603,383,040 | 63,786,240 |
| Size | 575.4 MB
| 60.8 MB
|
| Events in quadrant A | 5,025,746 | 377,667 |
| Events in quadrant B | 3,732,335 | 393,804 |
| Events in quadrant C | 3,022,316 | 387,635 |
| Events in quadrant D | 6,075,468 | 341,145 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18865 | 2 |
| B | 0 | 15033 | 1 |
| C | 0 | 13012 | 1 |
| D | 0 | 22242 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6166 | 721 | 11.693156% |
| B | 6166 | 220 | 3.567953% |
| C | 6166 | 41 | 0.664937% |
| D | 6166 | 818 | 13.266299% |
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 | 7356 | 6167 | 493 | 493 | 6.70% | 7.99% |  |
| B | 7356 | 6167 | 86 | 86 | 1.17% | 1.39% |  |
| C | 7356 | 6167 | 29 | 29 | 0.39% | 0.47% |  |
| D | 7356 | 6166 | 756 | 756 | 10.28% | 12.26% |  |
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 | 14 | 238 | 1597441 | 11118.52 | 698 | 685 | 143.6 |
| A | 8 | 5 | 552569 | 3842.87 | 698 | 685 | 143.6 |
| A | 1 | 162 | 53568 | 368.23 | 698 | 685 | 143.6 |
| B | 4 | 239 | 692614 | 4833.84 | 747 | 730 | 143.1 |
| B | 15 | 204 | 44940 | 308.87 | 747 | 730 | 143.1 |
| B | 0 | 214 | 18929 | 127.15 | 747 | 730 | 143.1 |
| C | 9 | 204 | 172502 | 1018.18 | 726 | 729 | 168.7 |
| C | 8 | 128 | 8575 | 46.51 | 726 | 729 | 168.7 |
| C | 13 | 61 | 5357 | 27.43 | 726 | 729 | 168.7 |
| D | 7 | 80 | 1097712 | 6663.67 | 676 | 658 | 164.6 |
| D | 1 | 52 | 918580 | 5575.59 | 676 | 658 | 164.6 |
| D | 10 | 253 | 880011 | 5341.32 | 676 | 658 | 164.6 |
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 |  |