Observation information
- date-obs: 2018-05-24
- time-obs: 07:57:47.250900000
- date-end: 2018-05-24
- time-end: 10:01:30.247800000
- obs_id: G08_078T01_9000002110
- exposure: 3225.59690738
- 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_14346cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14346cztM0_level2_quad_clean.evt
|
| Size (bytes) | 539,435,520 | 74,151,360 |
| Size | 514.4 MB
| 70.7 MB
|
| Events in quadrant A | 3,337,388 | 456,489 |
| Events in quadrant B | 3,288,771 | 459,722 |
| Events in quadrant C | 3,518,123 | 447,364 |
| Events in quadrant D | 5,752,016 | 428,426 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13860 | 2 |
| B | 0 | 13690 | 1 |
| C | 0 | 13924 | 1 |
| D | 0 | 21394 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6503 | 108 | 1.660772% |
| B | 6503 | 121 | 1.860680% |
| C | 6503 | 64 | 0.984161% |
| D | 6503 | 835 | 12.840228% |
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 | 7424 | 6504 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7424 | 6504 | 4 | 4 | 0.05% | 0.06% |  |
| C | 7424 | 6505 | 2 | 2 | 0.03% | 0.03% |  |
| D | 7424 | 6505 | 620 | 620 | 8.35% | 9.53% |  |
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 | 177843 | 1066.45 | 815 | 798 | 166.0 |
| A | 8 | 15 | 18715 | 107.93 | 815 | 798 | 166.0 |
| A | 0 | 226 | 7064 | 37.74 | 815 | 798 | 166.0 |
| B | 0 | 189 | 46949 | 295.69 | 806 | 787 | 156.1 |
| B | 0 | 214 | 29090 | 181.29 | 806 | 787 | 156.1 |
| B | 0 | 229 | 25572 | 158.76 | 806 | 787 | 156.1 |
| C | 3 | 233 | 471909 | 2606.54 | 778 | 783 | 180.7 |
| C | 14 | 234 | 11165 | 57.44 | 778 | 783 | 180.7 |
| C | 13 | 61 | 5455 | 25.85 | 778 | 783 | 180.7 |
| D | 5 | 222 | 1031425 | 5823.98 | 742 | 726 | 177.0 |
| D | 13 | 122 | 857671 | 4842.18 | 742 | 726 | 177.0 |
| D | 13 | 172 | 569743 | 3215.24 | 742 | 726 | 177.0 |
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 |  |