Observation information
- date-obs: 2017-10-31
- time-obs: 23:02:20.863700000
- date-end: 2017-11-01
- time-end: 01:02:48.863500000
- obs_id: G08_028T01_9000001656
- exposure: 2597.49958155
- 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_9000001656_11321cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001656_11321cztM0_level2_quad_clean.evt
|
| Size (bytes) | 661,397,760 | 57,994,560 |
| Size | 630.8 MB
| 55.3 MB
|
| Events in quadrant A | 7,574,195 | 299,537 |
| Events in quadrant B | 3,618,663 | 350,303 |
| Events in quadrant C | 3,174,308 | 345,274 |
| Events in quadrant D | 5,232,961 | 316,796 |
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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26844 | 2 |
| B | 0 | 14793 | 1 |
| C | 0 | 13741 | 1 |
| D | 0 | 19845 | 1 |
| 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 | 6358 | 1899 | 29.867883% |
| B | 6358 | 182 | 2.862535% |
| C | 6358 | 64 | 1.006606% |
| D | 6358 | 733 | 11.528783% |
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 | 7228 | 6358 | 1218 | 1218 | 16.85% | 19.16% |  |
| B | 7228 | 6359 | 71 | 71 | 0.98% | 1.12% |  |
| C | 7228 | 6359 | 32 | 32 | 0.44% | 0.50% |  |
| D | 7228 | 6359 | 603 | 603 | 8.34% | 9.48% |  |
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 | 14 | 238 | 4169544 | 32838.87 | 614 | 602 | 127.0 |
| A | 8 | 5 | 581995 | 4579.65 | 614 | 602 | 127.0 |
| A | 1 | 162 | 105429 | 825.73 | 614 | 602 | 127.0 |
| B | 4 | 239 | 535484 | 3675.99 | 760 | 743 | 145.5 |
| B | 0 | 219 | 29278 | 196.16 | 760 | 743 | 145.5 |
| B | 0 | 214 | 23098 | 153.67 | 760 | 743 | 145.5 |
| C | 9 | 204 | 277582 | 1599.83 | 737 | 742 | 173.0 |
| C | 9 | 54 | 21441 | 119.62 | 737 | 742 | 173.0 |
| C | 13 | 61 | 5595 | 28.05 | 737 | 742 | 173.0 |
| D | 10 | 253 | 1334168 | 7981.23 | 686 | 668 | 167.1 |
| D | 7 | 80 | 452564 | 2704.68 | 686 | 668 | 167.1 |
| D | 2 | 120 | 375356 | 2242.57 | 686 | 668 | 167.1 |
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 |  |