Observation information
- date-obs: 2017-11-01
- time-obs: 06:34:24.863500000
- date-end: 2017-11-01
- time-end: 11:29:13.853700000
- obs_id: G08_044T01_9000001658
- exposure: 10507.6933983
- sourceid: 4U 1957+115
- observer: jsyadav
- ra_pnt: 299.8509
- dec_pnt: 11.709
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_044T01_9000001658_11328cztM0_level2.evt
| modeM0/AS1G08_044T01_9000001658_11328cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,458,936,000 | 197,421,120 |
| Size | 1.4 GB
| 188.3 MB
|
| Events in quadrant A | 8,729,955 | 1,266,645 |
| Events in quadrant B | 11,745,258 | 1,244,646 |
| Events in quadrant C | 7,156,445 | 1,282,782 |
| Events in quadrant D | 15,490,923 | 1,098,096 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 35916 | 3 |
| B | 0 | 44866 | 3 |
| C | 0 | 32273 | 3 |
| D | 0 | 56533 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 320 | 0 |
| B | 0 | 320 | 0 |
| C | 0 | 320 | 0 |
| D | 0 | 320 | 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 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 15740 | 489 | 3.106734% |
| B | 15740 | 1403 | 8.913596% |
| C | 15740 | 132 | 0.838628% |
| D | 15740 | 2582 | 16.404066% |
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 | 17690 | 15743 | 183 | 183 | 1.03% | 1.16% |  |
| B | 17690 | 15743 | 843 | 843 | 4.77% | 5.35% |  |
| C | 17690 | 15743 | 4 | 4 | 0.02% | 0.03% |  |
| D | 17690 | 15743 | 2387 | 2387 | 13.49% | 15.16% |  |
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 | 14 | 238 | 816281 | 2158.81 | 1844 | 1799 | 377.3 |
| A | 8 | 15 | 614526 | 1624.05 | 1844 | 1799 | 377.3 |
| A | 15 | 174 | 66110 | 170.46 | 1844 | 1799 | 377.3 |
| B | 4 | 239 | 2270767 | 6491.58 | 1810 | 1763 | 349.5 |
| B | 3 | 64 | 1876651 | 5364.02 | 1810 | 1763 | 349.5 |
| B | 15 | 204 | 171897 | 486.75 | 1810 | 1763 | 349.5 |
| C | 9 | 204 | 80643 | 187.55 | 1807 | 1815 | 420.3 |
| C | 14 | 234 | 16171 | 34.16 | 1807 | 1815 | 420.3 |
| C | 13 | 61 | 13344 | 27.43 | 1807 | 1815 | 420.3 |
| D | 13 | 152 | 2571938 | 6280.21 | 1687 | 1640 | 409.3 |
| D | 7 | 80 | 2481532 | 6059.31 | 1687 | 1640 | 409.3 |
| D | 1 | 52 | 1507596 | 3679.62 | 1687 | 1640 | 409.3 |
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 |  |