Observation information
- date-obs: 2017-10-05
- time-obs: 19:30:05.426000000
- date-end: 2017-10-05
- time-end: 20:11:55.425500000
- obs_id: G08_036T01_9000001584
- exposure: 2098.25067578
- sourceid: 4U 1820-30
- observer: jsyadav
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_036T01_9000001584_10933cztM0_level2.evt
| modeM0/AS1G08_036T01_9000001584_10933cztM0_level2_quad_clean.evt
|
| Size (bytes) | 214,709,760 | 38,764,800 |
| Size | 204.8 MB
| 37.0 MB
|
| Events in quadrant A | 1,421,086 | 267,253 |
| Events in quadrant B | 1,580,853 | 267,759 |
| Events in quadrant C | 998,090 | 269,071 |
| Events in quadrant D | 2,350,603 | 209,653 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5693 | 2 |
| B | 0 | 6162 | 1 |
| C | 0 | 4558 | 1 |
| D | 0 | 8454 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 46 | 0 |
| B | 0 | 46 | 0 |
| C | 0 | 46 | 0 |
| D | 0 | 46 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2205 | 70 | 3.174603% |
| B | 2205 | 112 | 5.079365% |
| C | 2205 | 7 | 0.317460% |
| D | 2205 | 565 | 25.623583% |
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 | 2510 | 2206 | 16 | 16 | 0.64% | 0.73% |  |
| B | 2510 | 2206 | 62 | 62 | 2.47% | 2.81% |  |
| C | 2510 | 2206 | 0 | 0 | 0.00% | 0.00% |  |
| D | 2510 | 2206 | 330 | 330 | 13.15% | 14.96% |  |
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 | 8 | 5 | 385504 | 6872.56 | 263 | 257 | 56.1 |
| A | 8 | 6 | 4997 | 84.56 | 263 | 257 | 56.1 |
| A | 8 | 4 | 4868 | 82.26 | 263 | 257 | 56.1 |
| B | 4 | 239 | 498157 | 9408.84 | 263 | 256 | 52.9 |
| B | 0 | 219 | 13590 | 251.97 | 263 | 256 | 52.9 |
| B | 11 | 51 | 12961 | 240.09 | 263 | 256 | 52.9 |
| C | 8 | 128 | 2568 | 38.12 | 254 | 255 | 60.7 |
| C | 13 | 61 | 1892 | 26.98 | 254 | 255 | 60.7 |
| C | 8 | 112 | 1573 | 21.72 | 254 | 255 | 60.7 |
| D | 13 | 152 | 1235156 | 22959.41 | 214 | 207 | 53.8 |
| D | 8 | 195 | 131183 | 2435.02 | 214 | 207 | 53.8 |
| D | 1 | 52 | 104423 | 1937.52 | 214 | 207 | 53.8 |
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 |  |