Observation information
- date-obs: 2018-05-08
- time-obs: 12:03:14.719100000
- date-end: 2018-05-08
- time-end: 14:18:53.715600000
- obs_id: G08_028T01_9000002080
- exposure: 2620.26024044
- 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_9000002080_14112cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002080_14112cztM0_level2_quad_clean.evt
|
| Size (bytes) | 496,575,360 | 66,579,840 |
| Size | 473.6 MB
| 63.5 MB
|
| Events in quadrant A | 3,522,554 | 399,578 |
| Events in quadrant B | 3,673,851 | 396,803 |
| Events in quadrant C | 3,503,742 | 392,350 |
| Events in quadrant D | 3,906,501 | 382,526 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14411 | 3 |
| B | 0 | 14940 | 2 |
| C | 0 | 14068 | 2 |
| D | 0 | 15864 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 18 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6369 | 97 | 1.523002% |
| B | 6369 | 114 | 1.789920% |
| C | 6369 | 64 | 1.004867% |
| D | 6369 | 149 | 2.339457% |
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 | 7695 | 6371 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7695 | 6371 | 8 | 8 | 0.10% | 0.13% |  |
| C | 7695 | 6371 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7695 | 6371 | 76 | 76 | 0.99% | 1.19% |  |
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 | 8 | 15 | 33698 | 181.43 | 901 | 884 | 180.9 |
| A | 15 | 222 | 20404 | 107.92 | 901 | 884 | 180.9 |
| A | 0 | 226 | 7985 | 39.26 | 901 | 884 | 180.9 |
| B | 0 | 189 | 52986 | 312.76 | 891 | 873 | 166.6 |
| B | 10 | 252 | 31832 | 185.8 | 891 | 873 | 166.6 |
| B | 10 | 16 | 28681 | 166.89 | 891 | 873 | 166.6 |
| C | 3 | 233 | 117526 | 587.01 | 868 | 876 | 198.7 |
| C | 13 | 61 | 6298 | 27.28 | 868 | 876 | 198.7 |
| C | 12 | 4 | 2191 | 6.61 | 868 | 876 | 198.7 |
| D | 1 | 52 | 524639 | 2562.57 | 866 | 849 | 204.4 |
| D | 2 | 152 | 39588 | 189.53 | 866 | 849 | 204.4 |
| D | 13 | 172 | 22352 | 105.2 | 866 | 849 | 204.4 |
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 |  |