Observation information
- date-obs: 2018-07-27
- time-obs: 21:44:01.428500000
- date-end: 2018-07-28
- time-end: 00:10:49.433600000
- obs_id: A04_223T01_9000002258
- exposure: 4527.17014937
- 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_15302cztM0_level2.evt
| modeM0/AS1A04_223T01_9000002258_15302cztM0_level2_quad_clean.evt
|
| Size (bytes) | 477,492,480 | 94,121,280 |
| Size | 455.4 MB
| 89.8 MB
|
| Events in quadrant A | 3,283,670 | 600,890 |
| Events in quadrant B | 3,554,513 | 611,303 |
| Events in quadrant C | 3,693,510 | 595,023 |
| Events in quadrant D | 3,466,634 | 568,484 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14330 | 3 |
| B | 0 | 14983 | 2 |
| C | 0 | 15183 | 2 |
| D | 0 | 14953 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6813 | 45 | 0.660502% |
| B | 6813 | 103 | 1.511816% |
| C | 6813 | 34 | 0.499046% |
| D | 6813 | 79 | 1.159548% |
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 | 8809 | 6816 | 4 | 4 | 0.05% | 0.06% |  |
| B | 8809 | 6816 | 36 | 36 | 0.41% | 0.53% |  |
| C | 8809 | 6816 | 6 | 6 | 0.07% | 0.09% |  |
| D | 8809 | 6816 | 47 | 47 | 0.53% | 0.69% |  |
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 | 15 | 69 | 70535 | 413.9 | 828 | 810 | 168.5 |
| A | 9 | 143 | 23904 | 137.09 | 828 | 810 | 168.5 |
| A | 0 | 226 | 7454 | 39.44 | 828 | 810 | 168.5 |
| B | 10 | 16 | 189746 | 1170.37 | 828 | 806 | 161.4 |
| B | 0 | 189 | 36648 | 222.02 | 828 | 806 | 161.4 |
| B | 3 | 209 | 34061 | 206.0 | 828 | 806 | 161.4 |
| C | 3 | 233 | 551243 | 2946.4 | 800 | 804 | 186.8 |
| C | 7 | 247 | 20177 | 103.7 | 800 | 804 | 186.8 |
| C | 13 | 61 | 5682 | 26.11 | 800 | 804 | 186.8 |
| D | 2 | 33 | 201511 | 1028.24 | 795 | 771 | 195.2 |
| D | 8 | 195 | 125961 | 641.26 | 795 | 771 | 195.2 |
| D | 10 | 70 | 52055 | 262.69 | 795 | 771 | 195.2 |
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 |  |