Observation information
- date-obs: 2018-07-27
- time-obs: 18:34:52.422400000
- date-end: 2018-07-27
- time-end: 20:43:29.427200000
- obs_id: A04_223T01_9000002258
- exposure: 4213.81686746
- sourceid: 4U 1812-12
- observer: gaurava
- ra_pnt: 273.7756
- dec_pnt: -12.09631
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_223T01_9000002258_15300cztM0_level2.evt
| modeM0/AS1A04_223T01_9000002258_15300cztM0_level2_quad_clean.evt
|
| Size (bytes) | 478,846,080 | 95,359,680 |
| Size | 456.7 MB
| 90.9 MB
|
| Events in quadrant A | 3,235,106 | 626,954 |
| Events in quadrant B | 3,612,729 | 631,176 |
| Events in quadrant C | 3,606,134 | 610,185 |
| Events in quadrant D | 3,616,686 | 576,287 |
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 M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 14 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13614 | 3 |
| B | 0 | 14806 | 2 |
| C | 0 | 14646 | 2 |
| D | 0 | 14974 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6348 | 76 | 1.197227% |
| B | 6348 | 108 | 1.701323% |
| C | 6348 | 77 | 1.212980% |
| D | 6348 | 175 | 2.756774% |
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 | 7669 | 6350 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7669 | 6350 | 27 | 27 | 0.35% | 0.43% |  |
| C | 7669 | 6350 | 13 | 13 | 0.17% | 0.20% |  |
| D | 7669 | 6350 | 119 | 119 | 1.55% | 1.87% |  |
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 | 9 | 143 | 62068 | 368.98 | 824 | 806 | 166.0 |
| A | 0 | 226 | 7482 | 40.21 | 824 | 806 | 166.0 |
| A | 12 | 194 | 6283 | 32.99 | 824 | 806 | 166.0 |
| B | 10 | 16 | 224935 | 1450.18 | 818 | 801 | 154.6 |
| B | 0 | 190 | 43618 | 277.03 | 818 | 801 | 154.6 |
| B | 0 | 219 | 33069 | 208.78 | 818 | 801 | 154.6 |
| C | 3 | 233 | 408798 | 2244.46 | 787 | 794 | 181.8 |
| C | 4 | 254 | 107426 | 586.59 | 787 | 794 | 181.8 |
| C | 7 | 247 | 21450 | 113.63 | 787 | 794 | 181.8 |
| D | 13 | 122 | 264116 | 1356.25 | 786 | 763 | 194.2 |
| D | 7 | 38 | 122404 | 626.44 | 786 | 763 | 194.2 |
| D | 10 | 70 | 87905 | 448.78 | 786 | 763 | 194.2 |
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 |  |