Observation information
- date-obs: 2017-10-03
- time-obs: 12:13:57.467200000
- date-end: 2017-10-03
- time-end: 14:13:56.467300000
- obs_id: A04_055T02_9000001576
- exposure: 4341.77964691
- sourceid: 4U 1820-30
- observer: sudip
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_055T02_9000001576_10900cztM0_level2.evt
| modeM0/AS1A04_055T02_9000001576_10900cztM0_level2_quad_clean.evt
|
| Size (bytes) | 555,278,400 | 88,839,360 |
| Size | 529.6 MB
| 84.7 MB
|
| Events in quadrant A | 4,738,408 | 571,717 |
| Events in quadrant B | 5,362,201 | 557,549 |
| Events in quadrant C | 2,787,670 | 584,304 |
| Events in quadrant D | 3,517,467 | 553,342 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18102 | 2 |
| B | 0 | 19875 | 1 |
| C | 0 | 12499 | 1 |
| D | 0 | 14556 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6054 | 589 | 9.729105% |
| B | 6054 | 846 | 13.974232% |
| C | 6054 | 52 | 0.858936% |
| D | 6054 | 171 | 2.824579% |
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 | 7199 | 6054 | 354 | 354 | 4.92% | 5.85% |  |
| B | 7199 | 6055 | 561 | 561 | 7.79% | 9.27% |  |
| C | 7199 | 6055 | 2 | 2 | 0.03% | 0.03% |  |
| D | 7199 | 6055 | 60 | 60 | 0.83% | 0.99% |  |
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 | 5 | 1914319 | 13055.91 | 720 | 708 | 146.6 |
| A | 13 | 14 | 15532 | 101.14 | 720 | 708 | 146.6 |
| A | 8 | 6 | 9649 | 61.0 | 720 | 708 | 146.6 |
| B | 4 | 239 | 2155413 | 15895.31 | 713 | 698 | 135.6 |
| B | 10 | 245 | 258114 | 1898.96 | 713 | 698 | 135.6 |
| B | 0 | 231 | 54304 | 395.45 | 713 | 698 | 135.6 |
| C | 14 | 234 | 7889 | 43.89 | 710 | 714 | 163.5 |
| C | 13 | 61 | 5347 | 28.34 | 710 | 714 | 163.5 |
| C | 8 | 222 | 5004 | 26.24 | 710 | 714 | 163.5 |
| D | 5 | 222 | 306664 | 1776.76 | 709 | 690 | 172.2 |
| D | 10 | 199 | 150916 | 872.35 | 709 | 690 | 172.2 |
| D | 1 | 52 | 62997 | 361.81 | 709 | 690 | 172.2 |
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 |  |