Observation information
- date-obs: 2018-03-14
- time-obs: 15:00:02.786000000
- date-end: 2018-03-14
- time-end: 17:28:33.783500000
- obs_id: G08_023T01_9000001978
- exposure: 4929.61685144
- sourceid: centaurus A
- observer: sreekumar
- ra_pnt: 201.6023
- dec_pnt: -42.8446
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_023T01_9000001978_13300cztM0_level2.evt
| modeM0/AS1G08_023T01_9000001978_13300cztM0_level2_quad_clean.evt
|
| Size (bytes) | 478,416,960 | 104,212,800 |
| Size | 456.3 MB
| 99.4 MB
|
| Events in quadrant A | 3,506,260 | 685,624 |
| Events in quadrant B | 3,491,135 | 706,279 |
| Events in quadrant C | 3,220,685 | 677,717 |
| Events in quadrant D | 3,834,709 | 638,329 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14892 | 3 |
| B | 0 | 14507 | 2 |
| C | 0 | 13839 | 2 |
| D | 0 | 15777 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 25 | 0 |
| B | 0 | 25 | 0 |
| C | 0 | 25 | 0 |
| D | 0 | 25 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6426 | 96 | 1.493931% |
| B | 6426 | 96 | 1.493931% |
| C | 6426 | 60 | 0.933707% |
| D | 6426 | 162 | 2.521008% |
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 | 8912 | 6429 | 3 | 3 | 0.03% | 0.05% |  |
| B | 8912 | 6429 | 5 | 5 | 0.06% | 0.08% |  |
| C | 8912 | 6429 | 2 | 2 | 0.02% | 0.03% |  |
| D | 8912 | 6429 | 96 | 96 | 1.08% | 1.49% |  |
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 | 15 | 186811 | 1107.79 | 841 | 824 | 167.9 |
| A | 1 | 162 | 29867 | 172.99 | 841 | 824 | 167.9 |
| A | 15 | 69 | 25887 | 149.28 | 841 | 824 | 167.9 |
| B | 0 | 244 | 81299 | 508.61 | 848 | 827 | 158.2 |
| B | 0 | 214 | 27933 | 171.32 | 848 | 827 | 158.2 |
| B | 12 | 111 | 17138 | 103.09 | 848 | 827 | 158.2 |
| C | 3 | 233 | 30813 | 162.19 | 811 | 816 | 184.9 |
| C | 15 | 208 | 26826 | 140.63 | 811 | 816 | 184.9 |
| C | 13 | 61 | 5878 | 27.37 | 811 | 816 | 184.9 |
| D | 12 | 222 | 433497 | 2283.45 | 796 | 774 | 189.5 |
| D | 13 | 249 | 152494 | 800.62 | 796 | 774 | 189.5 |
| D | 8 | 195 | 79912 | 417.61 | 796 | 774 | 189.5 |
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 |  |