Observation information
- date-obs: 2017-08-30
- time-obs: 05:44:55.219700000
- date-end: 2017-08-30
- time-end: 08:01:41.216600000
- obs_id: G07_028T01_9000001500
- exposure: 2891.17009311
- sourceid: GRS 1915+105
- observer: santoshv
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G07_028T01_9000001500_10393cztM0_level2.evt
| modeM0/AS1G07_028T01_9000001500_10393cztM0_level2_quad_clean.evt
|
| Size (bytes) | 475,464,960 | 66,980,160 |
| Size | 453.4 MB
| 63.9 MB
|
| Events in quadrant A | 3,312,275 | 402,569 |
| Events in quadrant B | 3,795,686 | 411,815 |
| Events in quadrant C | 3,180,320 | 396,280 |
| Events in quadrant D | 3,679,559 | 373,748 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13481 | 3 |
| B | 0 | 15039 | 2 |
| C | 0 | 13304 | 2 |
| D | 0 | 14758 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6354 | 95 | 1.495121% |
| B | 6354 | 201 | 3.163362% |
| C | 6354 | 73 | 1.148883% |
| D | 6354 | 96 | 1.510859% |
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 | 7629 | 6354 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7629 | 6354 | 49 | 49 | 0.64% | 0.77% |  |
| C | 7629 | 6354 | 5 | 5 | 0.07% | 0.08% |  |
| D | 7629 | 6354 | 16 | 16 | 0.21% | 0.25% |  |
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 | 8 | 15 | 43545 | 249.7 | 842 | 827 | 171.1 |
| A | 14 | 254 | 9629 | 51.45 | 842 | 827 | 171.1 |
| A | 0 | 226 | 7633 | 39.78 | 842 | 827 | 171.1 |
| B | 4 | 239 | 306929 | 1917.07 | 842 | 824 | 159.7 |
| B | 11 | 51 | 61896 | 382.48 | 842 | 824 | 159.7 |
| B | 4 | 81 | 56944 | 351.47 | 842 | 824 | 159.7 |
| C | 14 | 234 | 27580 | 144.52 | 806 | 812 | 185.2 |
| C | 13 | 61 | 5933 | 27.65 | 806 | 812 | 185.2 |
| C | 8 | 128 | 4122 | 17.87 | 806 | 812 | 185.2 |
| D | 1 | 20 | 277485 | 1460.58 | 799 | 780 | 189.4 |
| D | 8 | 195 | 177873 | 934.78 | 799 | 780 | 189.4 |
| D | 2 | 14 | 55555 | 289.13 | 799 | 780 | 189.4 |
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 |  |