Observation information
- date-obs: 2018-05-22
- time-obs: 12:05:20.326200000
- date-end: 2018-05-22
- time-end: 14:27:37.322200000
- obs_id: G08_078T01_9000002110
- exposure: 3695.48112847
- 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_14319cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14319cztM0_level2_quad_clean.evt
|
| Size (bytes) | 637,577,280 | 81,106,560 |
| Size | 608.0 MB
| 77.3 MB
|
| Events in quadrant A | 3,959,204 | 490,965 |
| Events in quadrant B | 3,994,373 | 490,341 |
| Events in quadrant C | 4,113,284 | 481,831 |
| Events in quadrant D | 6,717,781 | 454,238 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16572 | 3 |
| B | 0 | 16721 | 2 |
| C | 0 | 16568 | 2 |
| D | 0 | 25316 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7747 | 254 | 3.278689% |
| B | 7747 | 277 | 3.575578% |
| C | 7747 | 213 | 2.749451% |
| D | 7747 | 698 | 9.009939% |
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 | 8538 | 7748 | 3 | 3 | 0.04% | 0.04% |  |
| B | 8538 | 7748 | 1 | 1 | 0.01% | 0.01% |  |
| C | 8538 | 7748 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8538 | 7748 | 357 | 357 | 4.18% | 4.61% |  |
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 | 121115 | 598.0 | 983 | 960 | 200.9 |
| A | 8 | 15 | 33612 | 162.51 | 983 | 960 | 200.9 |
| A | 9 | 143 | 18620 | 87.89 | 983 | 960 | 200.9 |
| B | 0 | 229 | 51248 | 264.69 | 972 | 947 | 190.0 |
| B | 10 | 245 | 37895 | 194.43 | 972 | 947 | 190.0 |
| B | 0 | 219 | 29308 | 149.24 | 972 | 947 | 190.0 |
| C | 3 | 233 | 411143 | 1843.74 | 948 | 954 | 222.5 |
| C | 13 | 61 | 6733 | 25.98 | 948 | 954 | 222.5 |
| C | 10 | 22 | 4653 | 16.63 | 948 | 954 | 222.5 |
| D | 5 | 222 | 1885102 | 8590.97 | 913 | 889 | 219.3 |
| D | 12 | 110 | 961328 | 4379.07 | 913 | 889 | 219.3 |
| D | 1 | 52 | 178917 | 811.71 | 913 | 889 | 219.3 |
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 |  |