Observation information
- date-obs: 2018-06-26
- time-obs: 04:48:12.788000000
- date-end: 2018-06-26
- time-end: 06:59:52.784900000
- obs_id: G08_028T01_9000002190
- exposure: 3488.38592689
- 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_14832cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002190_14832cztM0_level2_quad_clean.evt
|
| Size (bytes) | 442,379,520 | 82,494,720 |
| Size | 421.9 MB
| 78.7 MB
|
| Events in quadrant A | 3,188,034 | 526,691 |
| Events in quadrant B | 3,246,018 | 526,903 |
| Events in quadrant C | 3,320,288 | 505,244 |
| Events in quadrant D | 3,211,162 | 495,529 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 17 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13320 | 3 |
| B | 0 | 13537 | 2 |
| C | 0 | 13487 | 2 |
| D | 0 | 13472 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6371 | 65 | 1.020248% |
| B | 6371 | 76 | 1.192905% |
| C | 6371 | 36 | 0.565060% |
| D | 6371 | 58 | 0.910375% |
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 | 7477 | 6373 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7477 | 6373 | 1 | 1 | 0.01% | 0.02% |  |
| C | 7477 | 6373 | 1 | 1 | 0.01% | 0.02% |  |
| D | 7477 | 6373 | 24 | 24 | 0.32% | 0.38% |  |
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 | 21906 | 126.54 | 820 | 805 | 166.7 |
| A | 9 | 143 | 10184 | 56.25 | 820 | 805 | 166.7 |
| A | 0 | 226 | 7105 | 37.78 | 820 | 805 | 166.7 |
| B | 0 | 219 | 28875 | 178.92 | 813 | 794 | 156.9 |
| B | 3 | 64 | 21764 | 133.61 | 813 | 794 | 156.9 |
| B | 12 | 111 | 18978 | 115.86 | 813 | 794 | 156.9 |
| C | 3 | 233 | 267372 | 1465.86 | 782 | 788 | 181.9 |
| C | 14 | 234 | 6765 | 32.87 | 782 | 788 | 181.9 |
| C | 13 | 61 | 5589 | 26.4 | 782 | 788 | 181.9 |
| D | 13 | 104 | 214994 | 1133.59 | 786 | 765 | 189.0 |
| D | 2 | 234 | 20240 | 103.05 | 786 | 765 | 189.0 |
| D | 12 | 110 | 12467 | 61.92 | 786 | 765 | 189.0 |
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 |  |