Observation information
- date-obs: 2017-07-25
- time-obs: 21:29:54.863200000
- date-end: 2017-07-25
- time-end: 23:41:25.865400000
- obs_id: A03_117T06_9000001404
- exposure: 3815.56099381
- sourceid: 4U 1957+115
- observer: dipak
- ra_pnt: 299.8509
- dec_pnt: 11.709
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_117T06_9000001404_09870cztM0_level2.evt
| modeM0/AS1A03_117T06_9000001404_09870cztM0_level2_quad_clean.evt
|
| Size (bytes) | 438,557,760 | 87,652,800 |
| Size | 418.2 MB
| 83.6 MB
|
| Events in quadrant A | 2,948,214 | 558,649 |
| Events in quadrant B | 3,300,468 | 582,459 |
| Events in quadrant C | 3,124,757 | 560,721 |
| Events in quadrant D | 3,494,394 | 527,144 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 18 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12821 | 93 |
| B | 0 | 13724 | 86 |
| C | 0 | 13412 | 89 |
| D | 0 | 14664 | 84 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6084 | 37 | 0.608153% |
| B | 6094 | 119 | 1.952740% |
| C | 6096 | 48 | 0.787402% |
| D | 6092 | 58 | 0.952068% |
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 | 7457 | 6125 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7457 | 6127 | 53 | 53 | 0.71% | 0.87% |  |
| C | 7457 | 6126 | 6 | 6 | 0.08% | 0.10% |  |
| D | 7457 | 6125 | 7 | 7 | 0.09% | 0.11% |  |
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 | 4 | 19658 | 122.89 | 760 | 746 | 153.9 |
| A | 0 | 226 | 6897 | 39.97 | 760 | 746 | 153.9 |
| A | 15 | 174 | 6652 | 38.38 | 760 | 746 | 153.9 |
| B | 4 | 81 | 320006 | 2207.03 | 765 | 748 | 144.7 |
| B | 12 | 111 | 16614 | 109.68 | 765 | 748 | 144.7 |
| B | 11 | 111 | 13571 | 88.65 | 765 | 748 | 144.7 |
| C | 9 | 236 | 146077 | 850.27 | 746 | 753 | 170.9 |
| C | 4 | 254 | 46705 | 268.86 | 746 | 753 | 170.9 |
| C | 1 | 3 | 13233 | 73.02 | 746 | 753 | 170.9 |
| D | 1 | 52 | 574245 | 3011.52 | 729 | 713 | 190.4 |
| D | 10 | 172 | 80570 | 419.31 | 729 | 713 | 190.4 |
| D | 13 | 104 | 28932 | 148.17 | 729 | 713 | 190.4 |
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 |  |