Observation information
- date-obs: 2016-10-17
- time-obs: 06:49:47.485800000
- date-end: 2016-10-17
- time-end: 08:55:14.483100000
- obs_id: A02_098T01_9000000736
- exposure: 4586.0845485
- sourceid: 4U 1820-30
- observer: jayashreeroy
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_098T01_9000000736_05702cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05702cztM0_level2_quad_clean.evt
|
| Size (bytes) | 470,741,760 | 86,123,520 |
| Size | 448.9 MB
| 82.1 MB
|
| Events in quadrant A | 3,181,650 | 548,276 |
| Events in quadrant B | 3,607,234 | 548,782 |
| Events in quadrant C | 3,229,665 | 546,352 |
| Events in quadrant D | 3,809,526 | 524,470 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13383 | 3 |
| B | 0 | 14640 | 2 |
| C | 0 | 13656 | 2 |
| D | 0 | 15318 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6306 | 136 | 2.156676% |
| B | 6306 | 133 | 2.109102% |
| C | 6306 | 135 | 2.140818% |
| D | 6307 | 169 | 2.679562% |
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 | 7526 | 6306 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7526 | 6306 | 5 | 5 | 0.07% | 0.08% |  |
| C | 7526 | 6306 | 20 | 20 | 0.27% | 0.32% |  |
| D | 7527 | 6307 | 13 | 13 | 0.17% | 0.21% |  |
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 | 12 | 194 | 8241 | 44.18 | 827 | 809 | 168.2 |
| A | 0 | 226 | 8212 | 44.01 | 827 | 809 | 168.2 |
| A | 13 | 254 | 2335 | 9.07 | 827 | 809 | 168.2 |
| B | 15 | 204 | 136735 | 872.21 | 824 | 807 | 155.8 |
| B | 0 | 219 | 88272 | 561.24 | 824 | 807 | 155.8 |
| B | 0 | 214 | 57060 | 360.96 | 824 | 807 | 155.8 |
| C | 3 | 9 | 117967 | 652.01 | 793 | 798 | 179.7 |
| C | 1 | 16 | 9945 | 50.9 | 793 | 798 | 179.7 |
| C | 13 | 61 | 6408 | 31.22 | 793 | 798 | 179.7 |
| D | 8 | 195 | 427430 | 2163.32 | 803 | 779 | 197.2 |
| D | 2 | 152 | 123734 | 623.44 | 803 | 779 | 197.2 |
| D | 12 | 221 | 60265 | 301.62 | 803 | 779 | 197.2 |
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 |  |