Observation information
- date-obs: 2018-04-11
- time-obs: 23:57:06.669300000
- date-end: 2018-04-12
- time-end: 00:46:38.666700000
- obs_id: G08_036T01_9000002034
- exposure: 1271.46607468
- 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_9000002034_13719cztM0_level2.evt
| modeM0/AS1G08_036T01_9000002034_13719cztM0_level2_quad_clean.evt
|
| Size (bytes) | 140,040,000 | 31,377,600 |
| Size | 133.6 MB
| 29.9 MB
|
| Events in quadrant A | 942,900 | 206,548 |
| Events in quadrant B | 1,044,885 | 218,241 |
| Events in quadrant C | 980,424 | 204,871 |
| Events in quadrant D | 1,149,738 | 190,217 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3834 | 2 |
| B | 0 | 4185 | 1 |
| C | 0 | 3969 | 1 |
| D | 0 | 4474 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 38 | 0 |
| B | 0 | 38 | 0 |
| C | 0 | 38 | 0 |
| D | 0 | 38 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 1772 | 8 | 0.451467% |
| B | 1772 | 25 | 1.410835% |
| C | 1772 | 10 | 0.564334% |
| D | 1772 | 26 | 1.467269% |
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 | 2973 | 1774 | 0 | 0 | 0.00% | 0.00% |  |
| B | 2973 | 1774 | 3 | 3 | 0.10% | 0.17% |  |
| C | 2973 | 1774 | 0 | 0 | 0.00% | 0.00% |  |
| D | 2973 | 1774 | 11 | 11 | 0.37% | 0.62% |  |
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 | 3221 | 58.98 | 243 | 238 | 50.6 |
| A | 0 | 226 | 2118 | 37.17 | 243 | 238 | 50.6 |
| A | 11 | 29 | 1822 | 31.32 | 243 | 238 | 50.6 |
| B | 10 | 244 | 21712 | 438.78 | 251 | 245 | 48.9 |
| B | 3 | 64 | 15497 | 311.75 | 251 | 245 | 48.9 |
| B | 0 | 230 | 14889 | 299.32 | 251 | 245 | 48.9 |
| C | 3 | 233 | 36318 | 638.51 | 241 | 244 | 56.5 |
| C | 13 | 61 | 1732 | 26.34 | 241 | 244 | 56.5 |
| C | 7 | 159 | 904 | 11.68 | 241 | 244 | 56.5 |
| D | 5 | 222 | 189507 | 3292.44 | 234 | 228 | 57.5 |
| D | 8 | 195 | 47486 | 822.03 | 234 | 228 | 57.5 |
| D | 10 | 157 | 13766 | 235.49 | 234 | 228 | 57.5 |
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 |  |