Observation information
- date-obs: 2017-11-19
- time-obs: 03:40:29.840400000
- date-end: 2017-11-19
- time-end: 06:10:44.838300000
- obs_id: G08_031T01_9000001702
- exposure: 3374.05723483
- sourceid: NGC 253
- observer: askpati
- ra_pnt: 11.8875
- dec_pnt: -25.28833
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_031T01_9000001702_11591cztM0_level2.evt
| modeM0/AS1G08_031T01_9000001702_11591cztM0_level2_quad_clean.evt
|
| Size (bytes) | 532,762,560 | 72,947,520 |
| Size | 508.1 MB
| 69.6 MB
|
| Events in quadrant A | 3,748,042 | 440,842 |
| Events in quadrant B | 4,247,878 | 441,519 |
| Events in quadrant C | 3,328,032 | 442,465 |
| Events in quadrant D | 4,345,493 | 405,761 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15368 | 3 |
| B | 0 | 17006 | 2 |
| C | 0 | 14399 | 2 |
| D | 0 | 17367 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 21 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6855 | 106 | 1.546317% |
| B | 6855 | 315 | 4.595186% |
| C | 6855 | 79 | 1.152443% |
| D | 6855 | 370 | 5.397520% |
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 | 9016 | 6858 | 5 | 5 | 0.06% | 0.07% |  |
| B | 9016 | 6858 | 111 | 111 | 1.23% | 1.62% |  |
| C | 9016 | 6858 | 0 | 0 | 0.00% | 0.00% |  |
| D | 9016 | 6858 | 271 | 271 | 3.01% | 3.95% |  |
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 | 139396 | 791.43 | 860 | 842 | 175.1 |
| A | 1 | 162 | 111634 | 632.85 | 860 | 842 | 175.1 |
| A | 1 | 178 | 62087 | 349.83 | 860 | 842 | 175.1 |
| B | 4 | 239 | 605551 | 3719.21 | 856 | 835 | 162.6 |
| B | 3 | 64 | 94198 | 574.21 | 856 | 835 | 162.6 |
| B | 11 | 51 | 80101 | 487.51 | 856 | 835 | 162.6 |
| C | 9 | 54 | 24880 | 122.66 | 847 | 853 | 195.9 |
| C | 13 | 61 | 6273 | 27.67 | 847 | 853 | 195.9 |
| C | 12 | 4 | 2713 | 9.5 | 847 | 853 | 195.9 |
| D | 1 | 52 | 1043868 | 4837.82 | 813 | 798 | 215.6 |
| D | 2 | 33 | 48254 | 220.1 | 813 | 798 | 215.6 |
| D | 8 | 195 | 32717 | 148.04 | 813 | 798 | 215.6 |
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 |  |