Observation information
- date-obs: 2018-07-14
- time-obs: 04:41:32.295800000
- date-end: 2018-07-14
- time-end: 06:56:19.296900000
- obs_id: G08_028T01_9000002220
- exposure: 3616.78139187
- 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_9000002220_15099cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002220_15099cztM0_level2_quad_clean.evt
|
| Size (bytes) | 462,510,720 | 81,374,400 |
| Size | 441.1 MB
| 77.6 MB
|
| Events in quadrant A | 3,214,379 | 506,269 |
| Events in quadrant B | 3,694,515 | 515,188 |
| Events in quadrant C | 3,539,006 | 498,989 |
| Events in quadrant D | 3,107,431 | 480,015 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13733 | 2 |
| B | 0 | 15015 | 1 |
| C | 0 | 14175 | 1 |
| D | 0 | 13895 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6661 | 96 | 1.441225% |
| B | 6661 | 206 | 3.092629% |
| C | 6661 | 67 | 1.005855% |
| D | 6661 | 69 | 1.035880% |
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 | 7487 | 6662 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7487 | 6662 | 61 | 61 | 0.81% | 0.92% |  |
| C | 7487 | 6663 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7487 | 6662 | 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 | 10997 | 59.89 | 833 | 817 | 170.0 |
| A | 0 | 226 | 7286 | 38.06 | 833 | 817 | 170.0 |
| A | 12 | 194 | 6084 | 30.99 | 833 | 817 | 170.0 |
| B | 10 | 245 | 354987 | 2226.67 | 823 | 801 | 159.1 |
| B | 3 | 64 | 127876 | 798.88 | 823 | 801 | 159.1 |
| B | 12 | 111 | 19626 | 118.35 | 823 | 801 | 159.1 |
| C | 3 | 233 | 409099 | 2178.94 | 800 | 805 | 187.4 |
| C | 3 | 9 | 7731 | 36.96 | 800 | 805 | 187.4 |
| C | 13 | 61 | 5731 | 26.29 | 800 | 805 | 187.4 |
| D | 9 | 1 | 55009 | 275.51 | 801 | 778 | 196.8 |
| D | 13 | 104 | 31665 | 156.91 | 801 | 778 | 196.8 |
| D | 2 | 234 | 26813 | 132.26 | 801 | 778 | 196.8 |
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 |  |