Observation information
- date-obs: 2018-05-21
- time-obs: 16:25:16.371800000
- date-end: 2018-05-21
- time-end: 17:34:40.369400000
- obs_id: G08_078T01_9000002110
- exposure: 1889.05259012
- 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_14306cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14306cztM0_level2_quad_clean.evt
|
| Size (bytes) | 285,027,840 | 40,734,720 |
| Size | 271.8 MB
| 38.8 MB
|
| Events in quadrant A | 2,024,691 | 245,808 |
| Events in quadrant B | 1,917,024 | 246,308 |
| Events in quadrant C | 2,141,610 | 241,493 |
| Events in quadrant D | 2,293,333 | 234,831 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 76 | 0 |
| B | 0 | 76 | 0 |
| C | 0 | 76 | 0 |
| D | 0 | 76 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8220 | 2 |
| B | 0 | 7984 | 1 |
| C | 0 | 8643 | 1 |
| D | 0 | 9215 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 3744 | 39 | 1.041667% |
| B | 3744 | 44 | 1.175214% |
| C | 3744 | 38 | 1.014957% |
| D | 3744 | 115 | 3.071581% |
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 | 4165 | 3746 | 1 | 1 | 0.02% | 0.03% |  |
| B | 4165 | 3746 | 4 | 4 | 0.10% | 0.11% |  |
| C | 4165 | 3746 | 0 | 0 | 0.00% | 0.00% |  |
| D | 4165 | 3746 | 55 | 55 | 1.32% | 1.47% |  |
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 | 13 | 210 | 73960 | 751.89 | 471 | 461 | 97.8 |
| A | 12 | 189 | 70392 | 715.39 | 471 | 461 | 97.8 |
| A | 8 | 15 | 63954 | 649.53 | 471 | 461 | 97.8 |
| B | 0 | 189 | 29982 | 321.95 | 466 | 454 | 91.7 |
| B | 0 | 229 | 28412 | 304.83 | 466 | 454 | 91.7 |
| B | 0 | 219 | 16357 | 173.39 | 466 | 454 | 91.7 |
| C | 3 | 233 | 382378 | 3594.89 | 450 | 452 | 106.2 |
| C | 13 | 61 | 3363 | 27.4 | 450 | 452 | 106.2 |
| C | 3 | 232 | 2783 | 21.94 | 450 | 452 | 106.2 |
| D | 5 | 222 | 347240 | 3159.11 | 451 | 440 | 109.8 |
| D | 12 | 110 | 178293 | 1620.12 | 451 | 440 | 109.8 |
| D | 2 | 152 | 16711 | 148.22 | 451 | 440 | 109.8 |
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 |  |