Observation information
- date-obs: 2019-03-15
- time-obs: 21:59:05.542600000
- date-end: 2019-03-16
- time-end: 00:20:34.546900000
- obs_id: T03_091T01_9000002798
- exposure: 5684.1001348
- sourceid: Vela X1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.55469
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T03_091T01_9000002798_18721cztM0_level2.evt
| modeM0/AS1T03_091T01_9000002798_18721cztM0_level2_quad_clean.evt
|
| Size (bytes) | 605,594,880 | 111,844,800 |
| Size | 577.5 MB
| 106.7 MB
|
| Events in quadrant A | 3,635,878 | 741,104 |
| Events in quadrant B | 6,723,077 | 685,397 |
| Events in quadrant C | 3,926,160 | 712,429 |
| Events in quadrant D | 3,524,839 | 704,241 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16161 | 3 |
| B | 0 | 25249 | 3 |
| C | 0 | 16703 | 3 |
| D | 0 | 16165 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7814 | 56 | 0.716662% |
| B | 7815 | 1019 | 13.039028% |
| C | 7815 | 113 | 1.445937% |
| D | 7815 | 33 | 0.422265% |
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 | 8489 | 7817 | 10 | 10 | 0.12% | 0.13% |  |
| B | 8490 | 7818 | 766 | 766 | 9.02% | 9.80% |  |
| C | 8490 | 7818 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8490 | 7818 | 1 | 1 | 0.01% | 0.01% |  |
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 | 2 | 48968 | 254.97 | 925 | 904 | 188.5 |
| A | 15 | 192 | 12456 | 61.28 | 925 | 904 | 188.5 |
| A | 13 | 254 | 11698 | 57.26 | 925 | 904 | 188.5 |
| B | 10 | 245 | 3178516 | 18951.58 | 875 | 852 | 167.7 |
| B | 7 | 220 | 70475 | 415.23 | 875 | 852 | 167.7 |
| B | 12 | 111 | 20240 | 115.63 | 875 | 852 | 167.7 |
| C | 3 | 233 | 205434 | 977.47 | 886 | 891 | 209.3 |
| C | 14 | 238 | 139705 | 663.37 | 886 | 891 | 209.3 |
| C | 9 | 54 | 118512 | 562.09 | 886 | 891 | 209.3 |
| D | 7 | 238 | 40763 | 182.67 | 894 | 865 | 218.4 |
| D | 10 | 70 | 39324 | 176.08 | 894 | 865 | 218.4 |
| D | 2 | 234 | 37613 | 168.25 | 894 | 865 | 218.4 |
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 |  |