Observation information
- date-obs: 2019-03-15
- time-obs: 16:59:09.533300000
- date-end: 2019-03-15
- time-end: 19:05:45.536900000
- obs_id: T03_091T01_9000002798
- exposure: 4717.65239631
- 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_18718cztM0_level2.evt
| modeM0/AS1T03_091T01_9000002798_18718cztM0_level2_quad_clean.evt
|
| Size (bytes) | 452,776,320 | 97,908,480 |
| Size | 431.8 MB
| 93.4 MB
|
| Events in quadrant A | 3,199,221 | 639,890 |
| Events in quadrant B | 3,296,337 | 652,482 |
| Events in quadrant C | 3,324,409 | 608,257 |
| Events in quadrant D | 3,434,539 | 595,112 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13907 | 0 |
| B | 0 | 14060 | 0 |
| C | 0 | 14233 | 0 |
| D | 0 | 14912 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6736 | 47 | 0.697743% |
| B | 6736 | 57 | 0.846200% |
| C | 6737 | 81 | 1.202316% |
| D | 6737 | 116 | 1.721835% |
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 | 7596 | 6737 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7596 | 6737 | 7 | 7 | 0.09% | 0.10% |  |
| C | 7597 | 6738 | 1 | 1 | 0.01% | 0.01% |  |
| D | 7597 | 6738 | 91 | 91 | 1.20% | 1.35% |  |
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 | 13 | 254 | 10656 | 58.73 | 824 | 806 | 167.7 |
| A | 9 | 143 | 9266 | 50.44 | 824 | 806 | 167.7 |
| A | 14 | 111 | 8257 | 44.43 | 824 | 806 | 167.7 |
| B | 7 | 220 | 37416 | 233.04 | 824 | 804 | 157.1 |
| B | 12 | 111 | 18331 | 111.56 | 824 | 804 | 157.1 |
| B | 11 | 111 | 15644 | 94.46 | 824 | 804 | 157.1 |
| C | 3 | 233 | 151739 | 837.5 | 778 | 784 | 180.2 |
| C | 14 | 238 | 122415 | 674.81 | 778 | 784 | 180.2 |
| C | 0 | 207 | 19610 | 104.45 | 778 | 784 | 180.2 |
| D | 7 | 223 | 308323 | 1613.57 | 782 | 761 | 190.6 |
| D | 7 | 238 | 138870 | 724.56 | 782 | 761 | 190.6 |
| D | 2 | 234 | 28525 | 145.66 | 782 | 761 | 190.6 |
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 |  |