Observation information
- date-obs: 2019-03-15
- time-obs: 14:42:45.522700000
- date-end: 2019-03-15
- time-end: 15:38:15.530500000
- obs_id: T03_091T01_9000002798
- exposure: 1555.63515018
- 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_18716cztM0_level2.evt
| modeM0/AS1T03_091T01_9000002798_18716cztM0_level2_quad_clean.evt
|
| Size (bytes) | 154,108,800 | 36,711,360 |
| Size | 147.0 MB
| 35.0 MB
|
| Events in quadrant A | 1,135,073 | 245,929 |
| Events in quadrant B | 1,128,767 | 252,702 |
| Events in quadrant C | 1,114,388 | 235,898 |
| Events in quadrant D | 1,150,009 | 230,996 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4597 | 1 |
| B | 0 | 4570 | 1 |
| C | 0 | 4572 | 1 |
| D | 0 | 4714 | 1 |
| 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 SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44 | 0 |
| B | 0 | 44 | 0 |
| C | 0 | 44 | 0 |
| D | 0 | 44 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2001 | 63 | 3.148426% |
| B | 2001 | 66 | 3.298351% |
| C | 2001 | 73 | 3.648176% |
| D | 2001 | 43 | 2.148926% |
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 | 3331 | 2002 | 0 | 0 | 0.00% | 0.00% |  |
| B | 3331 | 2002 | 0 | 0 | 0.00% | 0.00% |  |
| C | 3331 | 2002 | 0 | 0 | 0.00% | 0.00% |  |
| D | 3331 | 2002 | 0 | 0 | 0.00% | 0.00% |  |
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 | 0 | 13 | 14102 | 232.82 | 288 | 282 | 59.4 |
| A | 14 | 4 | 6814 | 110.04 | 288 | 282 | 59.4 |
| A | 13 | 254 | 3091 | 47.32 | 288 | 282 | 59.4 |
| B | 12 | 111 | 6202 | 107.21 | 285 | 279 | 55.2 |
| B | 11 | 111 | 5351 | 91.8 | 285 | 279 | 55.2 |
| B | 4 | 171 | 4994 | 85.34 | 285 | 279 | 55.2 |
| C | 14 | 238 | 43188 | 678.89 | 268 | 269 | 63.2 |
| C | 3 | 233 | 24404 | 381.77 | 268 | 269 | 63.2 |
| C | 13 | 61 | 1882 | 25.51 | 268 | 269 | 63.2 |
| D | 7 | 238 | 81942 | 1192.73 | 276 | 268 | 68.5 |
| D | 7 | 38 | 16796 | 241.37 | 276 | 268 | 68.5 |
| D | 2 | 234 | 8766 | 124.1 | 276 | 268 | 68.5 |
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 |  |