Observation information
- date-obs: 2018-05-23
- time-obs: 05:58:01.293500000
- date-end: 2018-05-23
- time-end: 07:54:12.289700000
- obs_id: G08_078T01_9000002110
- exposure: 2971.81484894
- 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_14330cztM0_level2.evt
| modeM0/AS1G08_078T01_9000002110_14330cztM0_level2_quad_clean.evt
|
| Size (bytes) | 431,375,040 | 72,204,480 |
| Size | 411.4 MB
| 68.9 MB
|
| Events in quadrant A | 3,034,230 | 454,918 |
| Events in quadrant B | 2,948,214 | 458,857 |
| Events in quadrant C | 2,943,800 | 443,521 |
| Events in quadrant D | 3,750,056 | 429,803 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 116 | 0 |
| B | 0 | 116 | 0 |
| C | 0 | 116 | 0 |
| D | 0 | 116 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12292 | 2 |
| B | 0 | 12008 | 1 |
| C | 0 | 11959 | 1 |
| D | 0 | 14767 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5711 | 63 | 1.103134% |
| B | 5711 | 78 | 1.365785% |
| C | 5711 | 34 | 0.595342% |
| D | 5711 | 88 | 1.540886% |
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 | 6972 | 5713 | 0 | 0 | 0.00% | 0.00% |  |
| B | 6972 | 5712 | 0 | 0 | 0.00% | 0.00% |  |
| C | 6972 | 5713 | 0 | 0 | 0.00% | 0.00% |  |
| D | 6972 | 5713 | 37 | 37 | 0.53% | 0.65% |  |
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 | 156730 | 1039.56 | 746 | 735 | 150.1 |
| A | 0 | 226 | 6901 | 41.09 | 746 | 735 | 150.1 |
| A | 12 | 194 | 5580 | 32.29 | 746 | 735 | 150.1 |
| B | 0 | 189 | 34268 | 237.9 | 735 | 720 | 141.0 |
| B | 0 | 214 | 17969 | 122.32 | 735 | 720 | 141.0 |
| B | 12 | 111 | 16397 | 111.17 | 735 | 720 | 141.0 |
| C | 3 | 233 | 183579 | 1114.06 | 708 | 713 | 164.1 |
| C | 13 | 61 | 4949 | 25.81 | 708 | 713 | 164.1 |
| C | 3 | 202 | 1652 | 5.72 | 708 | 713 | 164.1 |
| D | 1 | 52 | 450432 | 2635.81 | 714 | 696 | 170.6 |
| D | 5 | 222 | 210079 | 1227.15 | 714 | 696 | 170.6 |
| D | 2 | 120 | 115339 | 671.9 | 714 | 696 | 170.6 |
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 |  |