Observation information
- date-obs: 2018-07-31
- time-obs: 14:57:53.337900000
- date-end: 2018-07-31
- time-end: 17:04:23.338600000
- obs_id: A04_126T01_9000002262
- exposure: 4988.53245386
- sourceid: 4U 1735-44
- observer: anjali
- ra_pnt: 264.7429
- dec_pnt: -44.45
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_126T01_9000002262_15357cztM0_level2.evt
| modeM0/AS1A04_126T01_9000002262_15357cztM0_level2_quad_clean.evt
|
| Size (bytes) | 457,122,240 | 110,750,400 |
| Size | 435.9 MB
| 105.6 MB
|
| Events in quadrant A | 3,194,120 | 743,978 |
| Events in quadrant B | 3,499,789 | 747,538 |
| Events in quadrant C | 3,403,362 | 725,217 |
| Events in quadrant D | 3,319,399 | 698,599 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13528 | 2 |
| B | 0 | 14411 | 1 |
| C | 0 | 13947 | 1 |
| D | 0 | 14062 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6290 | 103 | 1.637520% |
| B | 6290 | 124 | 1.971383% |
| C | 6290 | 65 | 1.033386% |
| D | 6290 | 99 | 1.573927% |
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 | 7591 | 6291 | 8 | 8 | 0.11% | 0.13% |  |
| B | 7591 | 6291 | 27 | 27 | 0.36% | 0.43% |  |
| C | 7591 | 6292 | 26 | 26 | 0.34% | 0.41% |  |
| D | 7591 | 6292 | 45 | 45 | 0.59% | 0.72% |  |
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 | 9 | 143 | 44653 | 268.67 | 816 | 804 | 163.2 |
| A | 15 | 233 | 8346 | 46.21 | 816 | 804 | 163.2 |
| A | 0 | 226 | 7417 | 40.52 | 816 | 804 | 163.2 |
| B | 10 | 16 | 192571 | 1264.03 | 810 | 790 | 151.7 |
| B | 0 | 190 | 34508 | 222.23 | 810 | 790 | 151.7 |
| B | 0 | 219 | 29599 | 189.88 | 810 | 790 | 151.7 |
| C | 3 | 233 | 385046 | 2194.31 | 771 | 774 | 175.1 |
| C | 7 | 247 | 7645 | 39.24 | 771 | 774 | 175.1 |
| C | 13 | 61 | 5556 | 27.31 | 771 | 774 | 175.1 |
| D | 7 | 38 | 73469 | 380.68 | 781 | 759 | 191.0 |
| D | 2 | 33 | 70869 | 367.07 | 781 | 759 | 191.0 |
| D | 5 | 222 | 47605 | 245.27 | 781 | 759 | 191.0 |
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 |  |