Observation information
- date-obs: 2018-05-21
- time-obs: 16:48:48.370900000
- date-end: 2018-05-21
- time-end: 19:56:22.365100000
- obs_id: G08_078T01_9000002110
- exposure: 6710.80009018
- 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_14308cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14308cztM0_level2_quad_clean.evt
|
| Size (bytes) | 738,668,160 | 132,863,040 |
| Size | 704.4 MB
| 126.7 MB
|
| Events in quadrant A | 4,981,273 | 841,953 |
| Events in quadrant B | 5,202,570 | 835,802 |
| Events in quadrant C | 5,560,243 | 827,224 |
| Events in quadrant D | 5,931,165 | 807,795 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 210 | 0 |
| B | 0 | 210 | 0 |
| C | 0 | 210 | 0 |
| D | 0 | 210 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21614 | 3 |
| B | 0 | 22215 | 2 |
| C | 0 | 22499 | 2 |
| D | 0 | 24818 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 10264 | 67 | 0.652767% |
| B | 10264 | 111 | 1.081450% |
| C | 10264 | 59 | 0.574825% |
| D | 10264 | 342 | 3.332034% |
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 | 11255 | 10267 | 2 | 2 | 0.02% | 0.02% |  |
| B | 11255 | 10267 | 16 | 16 | 0.14% | 0.16% |  |
| C | 11255 | 10267 | 1 | 1 | 0.01% | 0.01% |  |
| D | 11255 | 10267 | 219 | 219 | 1.95% | 2.13% |  |
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 | 133592 | 534.67 | 1217 | 1192 | 247.6 |
| A | 12 | 189 | 103820 | 414.44 | 1217 | 1192 | 247.6 |
| A | 13 | 210 | 41793 | 163.96 | 1217 | 1192 | 247.6 |
| B | 0 | 229 | 239714 | 1023.7 | 1212 | 1185 | 233.0 |
| B | 10 | 245 | 90303 | 382.47 | 1212 | 1185 | 233.0 |
| B | 0 | 189 | 41359 | 172.42 | 1212 | 1185 | 233.0 |
| C | 3 | 233 | 948161 | 3446.8 | 1180 | 1188 | 274.7 |
| C | 13 | 61 | 8518 | 26.68 | 1180 | 1188 | 274.7 |
| C | 3 | 232 | 5741 | 16.57 | 1180 | 1188 | 274.7 |
| D | 5 | 222 | 830009 | 2970.89 | 1169 | 1141 | 279.0 |
| D | 12 | 110 | 396150 | 1415.82 | 1169 | 1141 | 279.0 |
| D | 10 | 70 | 103079 | 365.37 | 1169 | 1141 | 279.0 |
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 |  |