Observation information
- date-obs: 2017-09-10
- time-obs: 02:58:14.904900000
- date-end: 2017-09-10
- time-end: 05:19:36.902000000
- obs_id: A03_107T01_9000001530
- exposure: 3194.83360971
- sourceid: 4U 1820-30
- observer: graman
- ra_pnt: 275.9188
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_107T01_9000001530_10554cztM0_level2.evt
| modeM0/AS1A03_107T01_9000001530_10554cztM0_level2_quad_clean.evt
|
| Size (bytes) | 506,712,960 | 69,505,920 |
| Size | 483.2 MB
| 66.3 MB
|
| Events in quadrant A | 3,502,967 | 410,621 |
| Events in quadrant B | 4,446,128 | 403,426 |
| Events in quadrant C | 3,192,221 | 413,965 |
| Events in quadrant D | 3,729,555 | 389,039 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 16 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15091 | 3 |
| B | 0 | 17782 | 2 |
| C | 0 | 14410 | 2 |
| D | 0 | 15475 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7000 | 109 | 1.557143% |
| B | 7000 | 422 | 6.028571% |
| C | 7000 | 74 | 1.057143% |
| D | 7000 | 82 | 1.171429% |
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 | 7755 | 7001 | 37 | 37 | 0.48% | 0.53% |  |
| B | 7755 | 7001 | 230 | 230 | 2.97% | 3.29% |  |
| C | 7755 | 7001 | 1 | 1 | 0.01% | 0.01% |  |
| D | 7755 | 7001 | 10 | 10 | 0.13% | 0.14% |  |
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 | 13 | 251 | 151793 | 883.27 | 830 | 811 | 170.9 |
| A | 15 | 174 | 88572 | 513.42 | 830 | 811 | 170.9 |
| A | 1 | 162 | 29901 | 170.18 | 830 | 811 | 170.9 |
| B | 4 | 239 | 1052707 | 6645.58 | 825 | 805 | 158.3 |
| B | 4 | 81 | 89738 | 561.85 | 825 | 805 | 158.3 |
| B | 0 | 214 | 31939 | 196.69 | 825 | 805 | 158.3 |
| C | 4 | 175 | 6235 | 28.33 | 815 | 818 | 191.2 |
| C | 13 | 61 | 6062 | 27.42 | 815 | 818 | 191.2 |
| C | 14 | 234 | 5968 | 26.93 | 815 | 818 | 191.2 |
| D | 2 | 16 | 296672 | 1525.68 | 802 | 780 | 193.9 |
| D | 8 | 195 | 246383 | 1266.38 | 802 | 780 | 193.9 |
| D | 1 | 52 | 47128 | 238.98 | 802 | 780 | 193.9 |
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 |  |