Observation information
- date-obs: 2018-05-21
- time-obs: 23:58:14.354300000
- date-end: 2018-05-22
- time-end: 02:15:45.349100000
- obs_id: G08_078T01_9000002110
- exposure: 4160.76442342
- 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_14311cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14311cztM0_level2_quad_clean.evt
|
| Size (bytes) | 466,076,160 | 91,771,200 |
| Size | 444.5 MB
| 87.5 MB
|
| Events in quadrant A | 3,304,434 | 588,533 |
| Events in quadrant B | 3,466,348 | 595,523 |
| Events in quadrant C | 3,561,707 | 579,917 |
| Events in quadrant D | 3,344,905 | 565,635 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13783 | 3 |
| B | 0 | 14494 | 2 |
| C | 0 | 14348 | 2 |
| D | 0 | 14265 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6448 | 38 | 0.589330% |
| B | 6448 | 101 | 1.566377% |
| C | 6448 | 36 | 0.558313% |
| D | 6448 | 42 | 0.651365% |
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 | 7589 | 6450 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7589 | 6449 | 27 | 27 | 0.36% | 0.42% |  |
| C | 7589 | 6450 | 8 | 8 | 0.11% | 0.12% |  |
| D | 7589 | 6450 | 13 | 13 | 0.17% | 0.20% |  |
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 | 136899 | 840.75 | 796 | 779 | 161.9 |
| A | 8 | 15 | 54692 | 332.99 | 796 | 779 | 161.9 |
| A | 9 | 143 | 52649 | 320.37 | 796 | 779 | 161.9 |
| B | 0 | 229 | 242951 | 1613.93 | 794 | 777 | 150.1 |
| B | 0 | 189 | 46353 | 303.73 | 794 | 777 | 150.1 |
| B | 4 | 48 | 37106 | 242.11 | 794 | 777 | 150.1 |
| C | 3 | 233 | 409327 | 2265.98 | 773 | 778 | 180.3 |
| C | 14 | 220 | 140664 | 775.86 | 773 | 778 | 180.3 |
| C | 13 | 61 | 5520 | 26.3 | 773 | 778 | 180.3 |
| D | 5 | 222 | 357444 | 1944.09 | 769 | 753 | 183.5 |
| D | 12 | 110 | 27876 | 147.83 | 769 | 753 | 183.5 |
| D | 2 | 234 | 21139 | 111.11 | 769 | 753 | 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 |  |