Observation information
- date-obs: 2018-04-04
- time-obs: 00:43:15.959300000
- date-end: 2018-04-04
- time-end: 02:39:44.954000000
- obs_id: G08_028T01_9000002006
- exposure: 3670.04380865
- 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_9000002006_13601cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002006_13601cztM0_level2_quad_clean.evt
|
| Size (bytes) | 467,403,840 | 77,938,560 |
| Size | 445.8 MB
| 74.3 MB
|
| Events in quadrant A | 2,720,749 | 509,469 |
| Events in quadrant B | 3,462,061 | 507,525 |
| Events in quadrant C | 2,761,729 | 509,524 |
| Events in quadrant D | 4,831,826 | 443,044 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 112 | 0 |
| B | 0 | 112 | 0 |
| C | 0 | 112 | 0 |
| D | 0 | 112 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11736 | 2 |
| B | 0 | 14068 | 2 |
| C | 0 | 11814 | 2 |
| D | 0 | 18392 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5584 | 41 | 0.734241% |
| B | 5584 | 185 | 3.313037% |
| C | 5584 | 31 | 0.555158% |
| D | 5584 | 722 | 12.929799% |
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 | 6650 | 5586 | 5 | 5 | 0.08% | 0.09% |  |
| B | 6650 | 5586 | 66 | 66 | 0.99% | 1.18% |  |
| C | 6650 | 5586 | 0 | 0 | 0.00% | 0.00% |  |
| D | 6650 | 5586 | 525 | 525 | 7.89% | 9.40% |  |
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 | 1 | 162 | 27342 | 188.88 | 688 | 676 | 141.2 |
| A | 15 | 69 | 21857 | 150.03 | 688 | 676 | 141.2 |
| A | 1 | 178 | 9627 | 63.4 | 688 | 676 | 141.2 |
| B | 0 | 219 | 405869 | 3048.85 | 682 | 665 | 132.9 |
| B | 3 | 64 | 286923 | 2153.87 | 682 | 665 | 132.9 |
| B | 0 | 182 | 42535 | 315.04 | 682 | 665 | 132.9 |
| C | 3 | 233 | 132068 | 849.63 | 667 | 673 | 154.7 |
| C | 0 | 207 | 26610 | 167.71 | 667 | 673 | 154.7 |
| C | 13 | 61 | 4986 | 27.89 | 667 | 673 | 154.7 |
| D | 13 | 122 | 1770937 | 11743.52 | 627 | 610 | 150.7 |
| D | 5 | 222 | 348533 | 2307.96 | 627 | 610 | 150.7 |
| D | 8 | 195 | 177459 | 1173.13 | 627 | 610 | 150.7 |
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 |  |