Observation information
- date-obs: 2018-11-07
- time-obs: 14:46:40.666900000
- date-end: 2018-11-07
- time-end: 16:50:13.663600000
- obs_id: A05_140T01_9000002496
- exposure: 3220.53888579
- sourceid: Vela X-1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.5547
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_140T01_9000002496_16822cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002496_16822cztM0_level2_quad_clean.evt
|
| Size (bytes) | 647,121,600 | 71,452,800 |
| Size | 617.1 MB
| 68.1 MB
|
| Events in quadrant A | 4,043,108 | 442,902 |
| Events in quadrant B | 3,620,341 | 449,742 |
| Events in quadrant C | 4,435,831 | 427,600 |
| Events in quadrant D | 7,046,847 | 377,111 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16234 | 2 |
| B | 0 | 14821 | 1 |
| C | 0 | 17286 | 1 |
| D | 0 | 25462 | 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 | 6683 | 291 | 4.354332% |
| B | 6683 | 143 | 2.139758% |
| C | 6683 | 292 | 4.369295% |
| D | 6683 | 1255 | 18.778991% |
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 | 7414 | 6685 | 136 | 136 | 1.83% | 2.03% |  |
| B | 7414 | 6685 | 9 | 9 | 0.12% | 0.13% |  |
| C | 7414 | 6685 | 100 | 100 | 1.35% | 1.50% |  |
| D | 7414 | 6685 | 859 | 859 | 11.59% | 12.85% |  |
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 | 15 | 174 | 840754 | 5008.71 | 830 | 815 | 167.7 |
| A | 9 | 143 | 9116 | 49.5 | 830 | 815 | 167.7 |
| A | 0 | 226 | 7399 | 39.26 | 830 | 815 | 167.7 |
| B | 10 | 16 | 123352 | 766.04 | 832 | 811 | 160.0 |
| B | 15 | 35 | 101548 | 629.74 | 832 | 811 | 160.0 |
| B | 0 | 229 | 45062 | 276.63 | 832 | 811 | 160.0 |
| C | 3 | 233 | 950708 | 5136.28 | 794 | 802 | 184.9 |
| C | 0 | 207 | 265198 | 1429.63 | 794 | 802 | 184.9 |
| C | 14 | 238 | 120751 | 648.58 | 794 | 802 | 184.9 |
| D | 1 | 52 | 3281559 | 17869.38 | 749 | 726 | 183.6 |
| D | 5 | 222 | 468534 | 2547.96 | 749 | 726 | 183.6 |
| D | 2 | 33 | 215806 | 1171.45 | 749 | 726 | 183.6 |
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 |  |