Observation information
- date-obs: 2018-05-24
- time-obs: 12:50:11.244000000
- date-end: 2018-05-24
- time-end: 15:13:45.241600000
- obs_id: G08_028T01_9000002112
- exposure: 4036.88964064
- 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_9000002112_14349cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002112_14349cztM0_level2_quad_clean.evt
|
| Size (bytes) | 688,792,320 | 86,567,040 |
| Size | 656.9 MB
| 82.6 MB
|
| Events in quadrant A | 4,148,447 | 529,705 |
| Events in quadrant B | 4,318,018 | 530,392 |
| Events in quadrant C | 4,288,052 | 520,466 |
| Events in quadrant D | 7,556,224 | 476,911 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17510 | 2 |
| B | 0 | 18000 | 1 |
| C | 0 | 17330 | 1 |
| D | 0 | 27941 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 164 | 0 |
| B | 0 | 164 | 0 |
| C | 0 | 164 | 0 |
| D | 0 | 164 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8119 | 213 | 2.623476% |
| B | 8119 | 272 | 3.350166% |
| C | 8119 | 184 | 2.266289% |
| D | 8119 | 1268 | 15.617687% |
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 | 8615 | 8120 | 30 | 30 | 0.35% | 0.37% |  |
| B | 8615 | 8120 | 28 | 28 | 0.33% | 0.34% |  |
| C | 8615 | 8121 | 8 | 8 | 0.09% | 0.10% |  |
| D | 8615 | 8120 | 969 | 969 | 11.25% | 11.93% |  |
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 | 4 | 2 | 177078 | 839.38 | 1018 | 995 | 209.8 |
| A | 12 | 189 | 36920 | 171.25 | 1018 | 995 | 209.8 |
| A | 8 | 15 | 11452 | 49.85 | 1018 | 995 | 209.8 |
| B | 0 | 229 | 152676 | 765.23 | 1009 | 982 | 198.2 |
| B | 10 | 16 | 79980 | 398.51 | 1009 | 982 | 198.2 |
| B | 0 | 189 | 40136 | 197.51 | 1009 | 982 | 198.2 |
| C | 3 | 233 | 427111 | 1851.5 | 980 | 983 | 230.2 |
| C | 6 | 96 | 25328 | 105.78 | 980 | 983 | 230.2 |
| C | 14 | 234 | 18082 | 74.29 | 980 | 983 | 230.2 |
| D | 13 | 122 | 1991744 | 8936.92 | 930 | 906 | 222.8 |
| D | 5 | 222 | 688785 | 3087.91 | 930 | 906 | 222.8 |
| D | 12 | 110 | 409057 | 1832.2 | 930 | 906 | 222.8 |
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 |  |