Observation information
- date-obs: 2018-02-27
- time-obs: 06:17:03.573700000
- date-end: 2018-02-27
- time-end: 08:16:35.574800000
- obs_id: A04_176T02_9000001924
- exposure: 2682.05346028
- sourceid: NGC 4395
- observer: KshamaSK
- ra_pnt: 186.4533
- dec_pnt: 33.54694
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_176T02_9000001924_13072cztM0_level2.evt
| modeM0/AS1A04_176T02_9000001924_13072cztM0_level2_quad_clean.evt
|
| Size (bytes) | 872,781,120 | 60,422,400 |
| Size | 832.3 MB
| 57.6 MB
|
| Events in quadrant A | 3,027,496 | 414,017 |
| Events in quadrant B | 5,265,933 | 395,752 |
| Events in quadrant C | 2,875,809 | 419,338 |
| Events in quadrant D | 14,849,056 | 170,658 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12824 | 2 |
| B | 0 | 19648 | 1 |
| C | 0 | 12763 | 1 |
| D | 0 | 48226 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6132 | 108 | 1.761252% |
| B | 6132 | 935 | 15.247880% |
| C | 6132 | 80 | 1.304631% |
| D | 6132 | 5061 | 82.534247% |
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 | 7173 | 6134 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7173 | 6134 | 611 | 611 | 8.52% | 9.96% |  |
| C | 7173 | 6134 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7173 | 6133 | 5015 | 5015 | 69.91% | 81.77% |  |
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 | 12 | 189 | 55391 | 351.37 | 764 | 750 | 155.5 |
| A | 1 | 162 | 17418 | 107.18 | 764 | 750 | 155.5 |
| A | 0 | 226 | 6955 | 39.9 | 764 | 750 | 155.5 |
| B | 4 | 239 | 1268719 | 9330.54 | 715 | 699 | 135.9 |
| B | 0 | 85 | 1033460 | 7599.42 | 715 | 699 | 135.9 |
| B | 3 | 64 | 71131 | 518.26 | 715 | 699 | 135.9 |
| C | 14 | 234 | 7421 | 39.07 | 735 | 738 | 171.1 |
| C | 13 | 61 | 5212 | 26.15 | 735 | 738 | 171.1 |
| C | 3 | 202 | 1877 | 6.66 | 735 | 738 | 171.1 |
| D | 1 | 52 | 13033837 | 133354.03 | 407 | 397 | 97.7 |
| D | 1 | 255 | 149018 | 1520.64 | 407 | 397 | 97.7 |
| D | 14 | 34 | 33437 | 338.05 | 407 | 397 | 97.7 |
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 |  |