Observation information
- date-obs: 2017-09-10
- time-obs: 04:39:31.901700000
- date-end: 2017-09-10
- time-end: 07:02:14.899400000
- obs_id: A03_107T01_9000001530
- exposure: 3700.00562083
- 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_10555cztM0_level2.evt
| modeM0/AS1A03_107T01_9000001530_10555cztM0_level2_quad_clean.evt
|
| Size (bytes) | 568,964,160 | 77,014,080 |
| Size | 542.6 MB
| 73.4 MB
|
| Events in quadrant A | 3,777,974 | 457,078 |
| Events in quadrant B | 4,599,509 | 453,117 |
| Events in quadrant C | 3,606,579 | 458,422 |
| Events in quadrant D | 4,727,819 | 431,316 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16323 | 3 |
| B | 0 | 18630 | 2 |
| C | 0 | 16130 | 2 |
| D | 0 | 18999 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7643 | 305 | 3.990580% |
| B | 7643 | 541 | 7.078372% |
| C | 7643 | 269 | 3.519560% |
| D | 7643 | 477 | 6.241005% |
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 | 8563 | 7646 | 2 | 2 | 0.02% | 0.03% |  |
| B | 8563 | 7646 | 128 | 128 | 1.49% | 1.67% |  |
| C | 8563 | 7646 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8563 | 7646 | 142 | 142 | 1.66% | 1.86% |  |
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 | 51796 | 263.8 | 938 | 915 | 192.9 |
| A | 1 | 162 | 50335 | 256.22 | 938 | 915 | 192.9 |
| A | 14 | 254 | 18978 | 93.65 | 938 | 915 | 192.9 |
| B | 4 | 239 | 840225 | 4615.24 | 934 | 910 | 181.9 |
| B | 0 | 214 | 33730 | 180.47 | 934 | 910 | 181.9 |
| B | 0 | 219 | 31063 | 165.81 | 934 | 910 | 181.9 |
| C | 13 | 61 | 6934 | 27.47 | 922 | 924 | 218.8 |
| C | 4 | 175 | 6893 | 27.29 | 922 | 924 | 218.8 |
| C | 14 | 234 | 2352 | 6.53 | 922 | 924 | 218.8 |
| D | 1 | 52 | 710554 | 3288.12 | 890 | 865 | 215.8 |
| D | 8 | 195 | 355816 | 1644.55 | 890 | 865 | 215.8 |
| D | 2 | 16 | 225234 | 1039.54 | 890 | 865 | 215.8 |
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 |  |