Observation information
- date-obs: 2016-10-17
- time-obs: 10:24:15.482500000
- date-end: 2016-10-17
- time-end: 12:29:32.481100000
- obs_id: A02_098T01_9000000736
- exposure: 4975.16150106
- sourceid: 4U 1820-30
- observer: jayashreeroy
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_098T01_9000000736_05704cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05704cztM0_level2_quad_clean.evt
|
| Size (bytes) | 454,861,440 | 87,984,000 |
| Size | 433.8 MB
| 83.9 MB
|
| Events in quadrant A | 3,022,008 | 561,428 |
| Events in quadrant B | 3,932,629 | 556,825 |
| Events in quadrant C | 2,997,812 | 561,059 |
| Events in quadrant D | 3,387,072 | 537,473 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13247 | 2 |
| B | 0 | 15821 | 1 |
| C | 0 | 13360 | 1 |
| D | 0 | 14296 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6417 | 94 | 1.464859% |
| B | 6417 | 164 | 2.555711% |
| C | 6417 | 64 | 0.997351% |
| D | 6417 | 99 | 1.542777% |
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 | 7517 | 6418 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7517 | 6418 | 80 | 80 | 1.06% | 1.25% |  |
| C | 7517 | 6418 | 11 | 11 | 0.15% | 0.17% |  |
| D | 7517 | 6418 | 25 | 25 | 0.33% | 0.39% |  |
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 | 50 | 11346 | 66.73 | 778 | 762 | 158.6 |
| A | 13 | 251 | 8246 | 47.18 | 778 | 762 | 158.6 |
| A | 12 | 194 | 7794 | 44.34 | 778 | 762 | 158.6 |
| B | 5 | 172 | 350863 | 2393.86 | 774 | 756 | 146.3 |
| B | 15 | 204 | 324497 | 2213.59 | 774 | 756 | 146.3 |
| B | 0 | 214 | 178245 | 1213.58 | 774 | 756 | 146.3 |
| C | 3 | 9 | 64660 | 372.06 | 743 | 747 | 171.8 |
| C | 1 | 16 | 20500 | 114.99 | 743 | 747 | 171.8 |
| C | 14 | 67 | 8656 | 46.04 | 743 | 747 | 171.8 |
| D | 2 | 152 | 277760 | 1504.87 | 752 | 730 | 184.1 |
| D | 4 | 95 | 77931 | 419.37 | 752 | 730 | 184.1 |
| D | 8 | 195 | 76004 | 408.9 | 752 | 730 | 184.1 |
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 |  |