Observation information
- date-obs: 2017-11-01
- time-obs: 02:08:52.863200000
- date-end: 2017-11-01
- time-end: 04:28:44.861500000
- obs_id: G08_028T01_9000001656
- exposure: 3623.6336377
- 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_9000001656_11323cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001656_11323cztM0_level2_quad_clean.evt
|
| Size (bytes) | 869,477,760 | 75,666,240 |
| Size | 829.2 MB
| 72.2 MB
|
| Events in quadrant A | 7,840,644 | 400,237 |
| Events in quadrant B | 5,052,996 | 457,512 |
| Events in quadrant C | 5,778,228 | 462,991 |
| Events in quadrant D | 7,121,703 | 415,603 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 28535 | 3 |
| B | 0 | 20204 | 2 |
| C | 0 | 22765 | 2 |
| D | 0 | 26537 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7967 | 2045 | 25.668382% |
| B | 7967 | 690 | 8.660725% |
| C | 7967 | 1118 | 14.032886% |
| D | 7967 | 1104 | 13.857161% |
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 | 8392 | 7969 | 1076 | 1076 | 12.82% | 13.50% |  |
| B | 8392 | 7969 | 152 | 152 | 1.81% | 1.91% |  |
| C | 8392 | 7969 | 700 | 700 | 8.34% | 8.78% |  |
| D | 8392 | 7969 | 774 | 774 | 9.22% | 9.71% |  |
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 | 14 | 238 | 4307405 | 23637.97 | 875 | 853 | 182.2 |
| A | 1 | 162 | 45046 | 242.57 | 875 | 853 | 182.2 |
| A | 8 | 15 | 31938 | 170.62 | 875 | 853 | 182.2 |
| B | 4 | 239 | 987740 | 5087.86 | 985 | 958 | 193.9 |
| B | 3 | 64 | 126421 | 646.89 | 985 | 958 | 193.9 |
| B | 15 | 204 | 28209 | 140.5 | 985 | 958 | 193.9 |
| C | 9 | 204 | 2147241 | 9773.19 | 929 | 933 | 219.6 |
| C | 13 | 61 | 6947 | 27.38 | 929 | 933 | 219.6 |
| C | 14 | 234 | 4578 | 16.6 | 929 | 933 | 219.6 |
| D | 10 | 253 | 1236526 | 5686.79 | 883 | 856 | 217.3 |
| D | 7 | 80 | 986653 | 4536.83 | 883 | 856 | 217.3 |
| D | 2 | 120 | 568710 | 2613.37 | 883 | 856 | 217.3 |
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 |  |