Observation information
- date-obs: 2017-10-21
- time-obs: 10:36:34.592600000
- date-end: 2017-10-21
- time-end: 12:28:24.591400000
- obs_id: A04_042T01_9000001630
- exposure: 4129.40909544
- sourceid: GRS 1915+105
- observer: rodrigue
- ra_pnt: 288.7991
- dec_pnt: 10.94602
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_042T01_9000001630_11165cztM0_level2.evt
| modeM0/AS1A04_042T01_9000001630_11165cztM0_level2_quad_clean.evt
|
| Size (bytes) | 645,719,040 | 77,670,720 |
| Size | 615.8 MB
| 74.1 MB
|
| Events in quadrant A | 5,035,500 | 481,375 |
| Events in quadrant B | 4,711,481 | 485,906 |
| Events in quadrant C | 2,848,062 | 499,376 |
| Events in quadrant D | 6,531,107 | 441,418 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19247 | 125 |
| B | 0 | 18437 | 250 |
| C | 0 | 13105 | 61 |
| D | 0 | 24115 | 247 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6345 | 397 | 6.256895% |
| B | 6330 | 460 | 7.266983% |
| C | 6365 | 37 | 0.581304% |
| D | 6343 | 667 | 10.515529% |
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 | 6710 | 6381 | 251 | 251 | 3.74% | 3.93% |  |
| B | 6709 | 6368 | 239 | 239 | 3.56% | 3.75% |  |
| C | 6710 | 6392 | 0 | 0 | 0.00% | 0.00% |  |
| D | 6710 | 6382 | 659 | 659 | 9.82% | 10.33% |  |
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 | 1018462 | 6602.87 | 737 | 719 | 154.1 |
| A | 14 | 238 | 862617 | 5591.79 | 737 | 719 | 154.1 |
| A | 8 | 5 | 280103 | 1812.58 | 737 | 719 | 154.1 |
| B | 4 | 239 | 994572 | 7014.93 | 735 | 718 | 141.7 |
| B | 10 | 16 | 473459 | 3336.75 | 735 | 718 | 141.7 |
| B | 15 | 204 | 100203 | 702.2 | 735 | 718 | 141.7 |
| C | 13 | 61 | 5474 | 27.77 | 729 | 732 | 170.8 |
| C | 14 | 67 | 2126 | 8.16 | 729 | 732 | 170.8 |
| C | 3 | 202 | 1828 | 6.42 | 729 | 732 | 170.8 |
| D | 10 | 157 | 2585321 | 14842.52 | 704 | 684 | 174.1 |
| D | 12 | 16 | 953076 | 5469.2 | 704 | 684 | 174.1 |
| D | 14 | 34 | 93177 | 531.15 | 704 | 684 | 174.1 |
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 |  |