Observation information
- date-obs: 2018-12-24
- time-obs: 13:44:06.409800000
- date-end: 2018-12-24
- time-end: 15:48:32.408900000
- obs_id: A05_140T01_9000002596
- exposure: 4004.02215508
- 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_9000002596_17517cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002596_17517cztM0_level2_quad_clean.evt
|
| Size (bytes) | 483,321,600 | 83,214,720 |
| Size | 460.9 MB
| 79.4 MB
|
| Events in quadrant A | 3,326,763 | 525,304 |
| Events in quadrant B | 3,266,436 | 526,754 |
| Events in quadrant C | 3,283,789 | 501,360 |
| Events in quadrant D | 4,300,088 | 494,102 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14287 | 1 |
| B | 0 | 13943 | 1 |
| C | 0 | 13988 | 1 |
| D | 0 | 17237 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6776 | 140 | 2.066116% |
| B | 6776 | 102 | 1.505313% |
| C | 6776 | 103 | 1.520071% |
| D | 6776 | 282 | 4.161747% |
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 | 7466 | 6776 | 37 | 37 | 0.50% | 0.55% |  |
| B | 7466 | 6777 | 1 | 1 | 0.01% | 0.01% |  |
| C | 7466 | 6777 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7466 | 6777 | 165 | 165 | 2.21% | 2.43% |  |
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 | 4 | 208 | 95681 | 567.9 | 831 | 813 | 167.1 |
| A | 15 | 174 | 35439 | 207.28 | 831 | 813 | 167.1 |
| A | 0 | 226 | 7209 | 38.29 | 831 | 813 | 167.1 |
| B | 12 | 111 | 18786 | 113.48 | 829 | 809 | 158.4 |
| B | 11 | 111 | 16253 | 97.49 | 829 | 809 | 158.4 |
| B | 0 | 219 | 16199 | 97.15 | 829 | 809 | 158.4 |
| C | 14 | 238 | 122369 | 654.74 | 793 | 797 | 185.7 |
| C | 3 | 233 | 50502 | 267.69 | 793 | 797 | 185.7 |
| C | 5 | 218 | 13409 | 67.92 | 793 | 797 | 185.7 |
| D | 5 | 222 | 926393 | 4785.18 | 796 | 774 | 193.4 |
| D | 13 | 189 | 185533 | 955.15 | 796 | 774 | 193.4 |
| D | 7 | 38 | 65936 | 336.87 | 796 | 774 | 193.4 |
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 |  |