Observation information
- date-obs: 2019-07-07
- time-obs: 23:59:49.422900000
- date-end: 2019-07-08
- time-end: 02:17:49.414900000
- obs_id: A05_140T01_9000003016
- exposure: 3006.6197174
- 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_9000003016_20410cztM0_level2.evt
| modeM0/AS1A05_140T01_9000003016_20410cztM0_level2_quad_clean.evt
|
| Size (bytes) | 456,350,400 | 73,664,640 |
| Size | 435.2 MB
| 70.3 MB
|
| Events in quadrant A | 3,227,535 | 462,996 |
| Events in quadrant B | 3,353,170 | 467,063 |
| Events in quadrant C | 3,277,087 | 446,826 |
| Events in quadrant D | 3,546,851 | 426,001 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12981 | 2 |
| B | 0 | 13381 | 2 |
| C | 0 | 13062 | 2 |
| D | 0 | 14204 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6127 | 27 | 0.440672% |
| B | 6127 | 64 | 1.044557% |
| C | 6127 | 62 | 1.011914% |
| D | 6127 | 154 | 2.513465% |
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 | 7507 | 6128 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7507 | 6128 | 3 | 3 | 0.04% | 0.05% |  |
| C | 7507 | 6128 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7507 | 6128 | 87 | 87 | 1.16% | 1.42% |  |
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 | 11 | 29 | 9367 | 51.66 | 836 | 820 | 165.5 |
| A | 0 | 226 | 7273 | 39.0 | 836 | 820 | 165.5 |
| A | 3 | 137 | 6414 | 33.81 | 836 | 820 | 165.5 |
| B | 4 | 216 | 28870 | 181.27 | 834 | 817 | 154.8 |
| B | 0 | 189 | 27056 | 169.54 | 834 | 817 | 154.8 |
| B | 0 | 183 | 21932 | 136.43 | 834 | 817 | 154.8 |
| C | 14 | 238 | 129258 | 699.46 | 803 | 812 | 183.6 |
| C | 9 | 221 | 9203 | 45.69 | 803 | 812 | 183.6 |
| C | 7 | 220 | 6396 | 30.41 | 803 | 812 | 183.6 |
| D | 13 | 153 | 345068 | 1795.86 | 799 | 778 | 191.7 |
| D | 1 | 52 | 138871 | 720.31 | 799 | 778 | 191.7 |
| D | 2 | 234 | 25045 | 126.58 | 799 | 778 | 191.7 |
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 |  |