Observation information
- date-obs: 2018-06-26
- time-obs: 03:13:21.792300000
- date-end: 2018-06-26
- time-end: 05:15:35.787300000
- obs_id: G08_028T01_9000002190
- exposure: 3894.10637104
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_028T01_9000002190_14831cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002190_14831cztM0_level2_quad_clean.evt
|
| Size (bytes) | 426,631,680 | 85,299,840 |
| Size | 406.9 MB
| 81.3 MB
|
| Events in quadrant A | 3,144,795 | 545,803 |
| Events in quadrant B | 3,148,285 | 546,677 |
| Events in quadrant C | 3,189,657 | 528,690 |
| Events in quadrant D | 3,005,275 | 518,142 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13161 | 2 |
| B | 0 | 13248 | 1 |
| C | 0 | 13142 | 1 |
| D | 0 | 13289 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6364 | 40 | 0.628536% |
| B | 6364 | 55 | 0.864236% |
| C | 6364 | 24 | 0.377121% |
| D | 6364 | 46 | 0.722816% |
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 | 7335 | 6366 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7335 | 6366 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7335 | 6366 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7335 | 6366 | 27 | 27 | 0.37% | 0.42% |  |
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 | 115839 | 732.19 | 780 | 765 | 157.2 |
| A | 9 | 143 | 13273 | 79.59 | 780 | 765 | 157.2 |
| A | 4 | 2 | 12186 | 72.67 | 780 | 765 | 157.2 |
| B | 3 | 64 | 67082 | 447.02 | 774 | 756 | 148.4 |
| B | 0 | 219 | 29555 | 194.1 | 774 | 756 | 148.4 |
| B | 0 | 189 | 19771 | 128.16 | 774 | 756 | 148.4 |
| C | 3 | 233 | 272223 | 1549.22 | 748 | 750 | 175.2 |
| C | 13 | 61 | 5364 | 26.33 | 748 | 750 | 175.2 |
| C | 14 | 234 | 2260 | 8.62 | 748 | 750 | 175.2 |
| D | 13 | 104 | 137011 | 742.57 | 751 | 731 | 183.5 |
| D | 2 | 234 | 22671 | 119.55 | 751 | 731 | 183.5 |
| D | 7 | 254 | 20459 | 107.5 | 751 | 731 | 183.5 |
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 |  |