Observation information
- date-obs: 2020-09-23
- time-obs: 14:59:04.219900000
- date-end: 2020-09-23
- time-end: 17:20:59.219000000
- obs_id: A09_145T01_9000003900
- exposure: 3194.4719952
- sourceid: Crab
- observer: aarthy
- ra_pnt: 83.63308
- dec_pnt: 22.0145
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A09_145T01_9000003900_26976cztM0_level2.evt
| modeM0/AS1A09_145T01_9000003900_26976cztM0_level2_quad_clean.evt
|
| Size (bytes) | 681,629,760 | 75,260,160 |
| Size | 650.1 MB
| 71.8 MB
|
| Events in quadrant A | 8,526,634 | 362,816 |
| Events in quadrant B | 3,444,669 | 500,166 |
| Events in quadrant C | 3,512,019 | 479,758 |
| Events in quadrant D | 4,704,798 | 466,925 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29930 | 0 |
| B | 0 | 14253 | 0 |
| C | 0 | 14458 | 0 |
| D | 0 | 18454 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6720 | 2354 | 35.029762% |
| B | 6720 | 69 | 1.026786% |
| C | 6721 | 132 | 1.963993% |
| D | 6721 | 281 | 4.180925% |
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 | 8515 | 6720 | 1762 | 1762 | 20.69% | 26.22% |  |
| B | 8515 | 6720 | 1 | 1 | 0.01% | 0.01% |  |
| C | 8516 | 6721 | 13 | 13 | 0.15% | 0.19% |  |
| D | 8516 | 6721 | 189 | 189 | 2.22% | 2.81% |  |
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 | 235 | 5672576 | 38342.22 | 731 | 717 | 147.9 |
| A | 8 | 192 | 27904 | 183.79 | 731 | 717 | 147.9 |
| A | 13 | 254 | 10117 | 63.54 | 731 | 717 | 147.9 |
| B | 12 | 111 | 19872 | 113.25 | 875 | 855 | 167.9 |
| B | 0 | 219 | 19552 | 111.34 | 875 | 855 | 167.9 |
| B | 11 | 111 | 17677 | 100.17 | 875 | 855 | 167.9 |
| C | 14 | 238 | 134905 | 675.16 | 844 | 850 | 198.6 |
| C | 15 | 208 | 55996 | 277.74 | 844 | 850 | 198.6 |
| C | 2 | 16 | 18715 | 89.98 | 844 | 850 | 198.6 |
| D | 1 | 52 | 807897 | 3985.81 | 842 | 821 | 202.5 |
| D | 2 | 250 | 311244 | 1533.05 | 842 | 821 | 202.5 |
| D | 7 | 38 | 179876 | 884.28 | 842 | 821 | 202.5 |
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 |  |