Observation information
- date-obs: 2016-10-17
- time-obs: 12:02:50.481100000
- date-end: 2016-10-17
- time-end: 14:12:29.480300000
- obs_id: A02_098T01_9000000736
- exposure: 4815.80204951
- 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_05705cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05705cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,654,400 | 83,643,840 |
| Size | 531.8 MB
| 79.8 MB
|
| Events in quadrant A | 3,308,400 | 525,423 |
| Events in quadrant B | 5,322,723 | 499,605 |
| Events in quadrant C | 3,177,159 | 527,990 |
| Events in quadrant D | 4,606,733 | 493,012 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14606 | 2 |
| B | 0 | 20499 | 1 |
| C | 0 | 14459 | 1 |
| D | 0 | 18369 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6984 | 61 | 0.873425% |
| B | 6984 | 492 | 7.044674% |
| C | 6984 | 32 | 0.458190% |
| D | 6984 | 327 | 4.682131% |
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 | 7779 | 6985 | 6 | 6 | 0.08% | 0.09% |  |
| B | 7779 | 6985 | 437 | 437 | 5.62% | 6.26% |  |
| C | 7779 | 6985 | 11 | 11 | 0.14% | 0.16% |  |
| D | 7779 | 6985 | 291 | 291 | 3.74% | 4.17% |  |
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 | 7 | 16 | 43174 | 247.97 | 829 | 812 | 170.8 |
| A | 15 | 174 | 37189 | 212.94 | 829 | 812 | 170.8 |
| A | 0 | 50 | 33877 | 193.55 | 829 | 812 | 170.8 |
| B | 5 | 172 | 1456856 | 9316.97 | 812 | 792 | 156.3 |
| B | 15 | 204 | 355205 | 2267.8 | 812 | 792 | 156.3 |
| B | 0 | 214 | 204286 | 1302.1 | 812 | 792 | 156.3 |
| C | 1 | 241 | 36804 | 194.53 | 794 | 798 | 185.1 |
| C | 1 | 16 | 16349 | 84.02 | 794 | 798 | 185.1 |
| C | 3 | 9 | 8807 | 43.27 | 794 | 798 | 185.1 |
| D | 2 | 152 | 1405371 | 7093.02 | 792 | 767 | 198.0 |
| D | 8 | 195 | 72107 | 360.26 | 792 | 767 | 198.0 |
| D | 2 | 14 | 44987 | 223.3 | 792 | 767 | 198.0 |
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 |  |