Observation information
- date-obs: 2017-07-12
- time-obs: 13:12:08.634800000
- date-end: 2017-07-12
- time-end: 15:16:15.638400000
- obs_id: A02_198T01_9000001376
- exposure: 5435.82639123
- sourceid: 4U 1538-52
- observer: varun
- ra_pnt: 235.5973
- dec_pnt: -52.386
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_198T01_9000001376_09672cztM0_level2.evt
| modeM0/AS1A02_198T01_9000001376_09672cztM0_level2_quad_clean.evt
|
| Size (bytes) | 472,893,120 | 103,619,520 |
| Size | 451.0 MB
| 98.8 MB
|
| Events in quadrant A | 3,444,988 | 670,768 |
| Events in quadrant B | 3,533,196 | 668,139 |
| Events in quadrant C | 3,132,170 | 664,699 |
| Events in quadrant D | 3,734,011 | 645,625 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| 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 | 14823 | 2 |
| B | 0 | 15017 | 1 |
| C | 0 | 14363 | 1 |
| D | 0 | 15917 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7022 | 127 | 1.808602% |
| B | 7022 | 121 | 1.723156% |
| C | 7022 | 50 | 0.712048% |
| D | 7022 | 153 | 2.178866% |
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 | 7447 | 7023 | 4 | 4 | 0.05% | 0.06% |  |
| B | 7447 | 7023 | 5 | 5 | 0.07% | 0.07% |  |
| C | 7447 | 7023 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7447 | 7023 | 60 | 60 | 0.81% | 0.85% |  |
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 | 1 | 162 | 81008 | 468.72 | 830 | 812 | 171.1 |
| A | 13 | 248 | 56056 | 322.89 | 830 | 812 | 171.1 |
| A | 14 | 111 | 32779 | 186.84 | 830 | 812 | 171.1 |
| B | 15 | 85 | 91321 | 577.52 | 827 | 808 | 156.7 |
| B | 0 | 214 | 83221 | 525.84 | 827 | 808 | 156.7 |
| B | 0 | 229 | 48395 | 303.63 | 827 | 808 | 156.7 |
| C | 13 | 61 | 5939 | 27.76 | 800 | 801 | 185.1 |
| C | 8 | 128 | 4917 | 22.24 | 800 | 801 | 185.1 |
| C | 8 | 112 | 2841 | 11.02 | 800 | 801 | 185.1 |
| D | 12 | 233 | 226714 | 1153.44 | 798 | 776 | 195.9 |
| D | 1 | 52 | 169729 | 862.53 | 798 | 776 | 195.9 |
| D | 7 | 71 | 137623 | 698.62 | 798 | 776 | 195.9 |
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 |  |