Observation information
- date-obs: 2018-05-23
- time-obs: 21:01:23.272800000
- date-end: 2018-05-23
- time-end: 23:34:20.267100000
- obs_id: G08_078T01_9000002110
- exposure: 4760.76078753
- 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_14339cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14339cztM0_level2_quad_clean.evt
|
| Size (bytes) | 609,442,560 | 99,328,320 |
| Size | 581.2 MB
| 94.7 MB
|
| Events in quadrant A | 3,950,521 | 632,569 |
| Events in quadrant B | 4,049,946 | 639,344 |
| Events in quadrant C | 3,744,149 | 635,976 |
| Events in quadrant D | 6,222,287 | 596,081 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16285 | 3 |
| B | 0 | 16812 | 2 |
| C | 0 | 15464 | 2 |
| D | 0 | 23554 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7242 | 118 | 1.629384% |
| B | 7242 | 185 | 2.554543% |
| C | 7242 | 52 | 0.718034% |
| D | 7242 | 308 | 4.252969% |
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 | 9178 | 7244 | 70 | 70 | 0.76% | 0.97% |  |
| B | 9178 | 7243 | 74 | 74 | 0.81% | 1.02% |  |
| C | 9178 | 7244 | 1 | 1 | 0.01% | 0.01% |  |
| D | 9178 | 7245 | 202 | 202 | 2.20% | 2.79% |  |
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 | 12 | 189 | 369610 | 2072.74 | 884 | 865 | 177.9 |
| A | 8 | 15 | 132530 | 740.1 | 884 | 865 | 177.9 |
| A | 4 | 2 | 42670 | 234.99 | 884 | 865 | 177.9 |
| B | 0 | 229 | 301949 | 1770.5 | 883 | 860 | 170.1 |
| B | 10 | 16 | 218280 | 1278.5 | 883 | 860 | 170.1 |
| B | 0 | 189 | 28128 | 160.34 | 883 | 860 | 170.1 |
| C | 3 | 233 | 355456 | 1761.29 | 867 | 872 | 201.3 |
| C | 14 | 234 | 10851 | 49.57 | 867 | 872 | 201.3 |
| C | 13 | 61 | 6134 | 26.14 | 867 | 872 | 201.3 |
| D | 1 | 52 | 2076800 | 10317.5 | 845 | 824 | 201.2 |
| D | 5 | 222 | 350789 | 1739.31 | 845 | 824 | 201.2 |
| D | 12 | 110 | 192378 | 952.01 | 845 | 824 | 201.2 |
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 |  |