Observation information
- date-obs: 2018-05-21
- time-obs: 16:25:16.371800000
- date-end: 2018-05-24
- time-end: 12:09:33.244200000
- obs_id: G08_078T01_9000002110
- exposure: 88361.7362781
- 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_9000002110cztM0_level2.fits
| modeM0/AS1G08_078T01_9000002110cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,928,030,400 | 1,650,726,720 |
| Size | 1.8 GB
| 1.5 GB
|
| Events in quadrant A | 11,914,400 | 9,637,750 |
| Events in quadrant B | 11,164,440 | 9,214,273 |
| Events in quadrant C | 11,551,106 | 9,063,803 |
| Events in quadrant D | 10,018,826 | 8,338,512 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4092 | 0 |
| B | 0 | 4092 | 0 |
| C | 0 | 4092 | 0 |
| D | 0 | 4092 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 426015 | 0 |
| B | 0 | 486671 | 0 |
| C | 0 | 424995 | 0 |
| D | 0 | 525180 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 321 | 0 |
| B | 0 | 321 | 0 |
| C | 0 | 321 | 0 |
| D | 0 | 322 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 200528 | 2175 | 1.084637% |
| B | 200530 | 10281 | 5.126914% |
| C | 200528 | 1606 | 0.800886% |
| D | 200529 | 6873 | 3.427434% |
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 | 243858 | 200512 | 0 | 0 | 0.00% | 0.00% |  |
| B | 243858 | 200448 | 0 | 0 | 0.00% | 0.00% |  |
| C | 243858 | 200520 | 0 | 0 | 0.00% | 0.00% |  |
| D | 243858 | 200430 | 0 | 0 | 0.00% | 0.00% |  |
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 | 0 | 29 | 11541 | 11.22 | 3100 | 2897 | 770.1 |
| A | 7 | 110 | 9452 | 8.51 | 3100 | 2897 | 770.1 |
| A | 0 | 30 | 8906 | 7.8 | 3100 | 2897 | 770.1 |
| B | 2 | 9 | 9738 | 12.0 | 2942 | 2802 | 577.9 |
| B | 3 | 17 | 7336 | 7.84 | 2942 | 2802 | 577.9 |
| B | 5 | 128 | 7255 | 7.7 | 2942 | 2802 | 577.9 |
| C | 12 | 241 | 8219 | 6.82 | 3053 | 2834 | 789.3 |
| C | 2 | 191 | 7733 | 6.21 | 3053 | 2834 | 789.3 |
| C | 3 | 126 | 7701 | 6.17 | 3053 | 2834 | 789.3 |
| D | 6 | 231 | 7343 | 6.24 | 2857 | 2603 | 759.1 |
| D | 3 | 14 | 7219 | 6.08 | 2857 | 2603 | 759.1 |
| D | 7 | 3 | 7080 | 5.9 | 2857 | 2603 | 759.1 |
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 |  |