Observation information
- date-obs: 2018-07-14
- time-obs: 06:16:50.296100000
- date-end: 2018-07-14
- time-end: 08:43:57.297800000
- obs_id: G08_028T01_9000002220
- exposure: 3975.60628837
- 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_15100cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002220_15100cztM0_level2_quad_clean.evt
|
| Size (bytes) | 541,131,840 | 88,796,160 |
| Size | 516.1 MB
| 84.7 MB
|
| Events in quadrant A | 3,808,328 | 543,358 |
| Events in quadrant B | 4,241,185 | 550,863 |
| Events in quadrant C | 4,151,265 | 539,726 |
| Events in quadrant D | 3,665,089 | 519,702 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16278 | 4 |
| B | 0 | 17435 | 3 |
| C | 0 | 16759 | 3 |
| D | 0 | 16426 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 156 | 0 |
| B | 0 | 156 | 0 |
| C | 0 | 156 | 0 |
| D | 0 | 156 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7697 | 298 | 3.871638% |
| B | 7697 | 337 | 4.378329% |
| C | 7697 | 248 | 3.222035% |
| D | 7697 | 234 | 3.040146% |
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 | 8828 | 7697 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8828 | 7697 | 2 | 2 | 0.02% | 0.03% |  |
| C | 8828 | 7698 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8828 | 7698 | 9 | 9 | 0.10% | 0.12% |  |
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 | 47047 | 232.5 | 978 | 958 | 198.2 |
| A | 0 | 226 | 8504 | 38.07 | 978 | 958 | 198.2 |
| A | 12 | 194 | 7199 | 31.48 | 978 | 958 | 198.2 |
| B | 3 | 64 | 353874 | 1830.66 | 969 | 940 | 192.8 |
| B | 10 | 245 | 89496 | 459.34 | 969 | 940 | 192.8 |
| B | 12 | 111 | 24100 | 120.13 | 969 | 940 | 192.8 |
| C | 3 | 233 | 400005 | 1796.01 | 946 | 950 | 222.2 |
| C | 3 | 9 | 63907 | 283.35 | 946 | 950 | 222.2 |
| C | 13 | 61 | 6718 | 25.96 | 946 | 950 | 222.2 |
| D | 10 | 70 | 74509 | 315.61 | 948 | 919 | 233.2 |
| D | 2 | 234 | 29024 | 120.54 | 948 | 919 | 233.2 |
| D | 13 | 104 | 17703 | 71.98 | 948 | 919 | 233.2 |
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 |  |