Observation information
- date-obs: 2016-10-17
- time-obs: 17:08:05.479200000
- date-end: 2016-10-17
- time-end: 19:24:30.478400000
- obs_id: A02_098T01_9000000736
- exposure: 5700.22476489
- sourceid: 4U 1820-30
- observer: jayashreeroy
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_098T01_9000000736_05708cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05708cztM0_level2_quad_clean.evt
|
| Size (bytes) | 580,786,560 | 96,955,200 |
| Size | 553.9 MB
| 92.5 MB
|
| Events in quadrant A | 3,773,494 | 601,754 |
| Events in quadrant B | 5,507,877 | 593,063 |
| Events in quadrant C | 3,687,473 | 608,073 |
| Events in quadrant D | 4,084,231 | 583,511 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 164 | 0 |
| B | 0 | 164 | 0 |
| C | 0 | 164 | 0 |
| D | 0 | 164 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16891 | 5 |
| B | 0 | 21765 | 4 |
| C | 0 | 16660 | 4 |
| D | 0 | 17765 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7890 | 120 | 1.520913% |
| B | 7890 | 405 | 5.133080% |
| C | 7890 | 44 | 0.557668% |
| D | 7890 | 79 | 1.001267% |
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 | 8185 | 7894 | 28 | 28 | 0.34% | 0.35% |  |
| B | 8185 | 7894 | 170 | 170 | 2.08% | 2.15% |  |
| C | 8185 | 7894 | 13 | 13 | 0.16% | 0.16% |  |
| D | 8185 | 7894 | 30 | 30 | 0.37% | 0.38% |  |
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 | 0 | 50 | 203461 | 1074.18 | 920 | 899 | 188.6 |
| A | 0 | 12 | 11908 | 58.38 | 920 | 899 | 188.6 |
| A | 12 | 194 | 9036 | 43.15 | 920 | 899 | 188.6 |
| B | 5 | 172 | 828821 | 4634.69 | 922 | 899 | 178.6 |
| B | 15 | 204 | 585927 | 3274.97 | 922 | 899 | 178.6 |
| B | 4 | 239 | 115236 | 640.06 | 922 | 899 | 178.6 |
| C | 1 | 16 | 56664 | 269.89 | 890 | 892 | 206.6 |
| C | 5 | 250 | 55464 | 264.08 | 890 | 892 | 206.6 |
| C | 9 | 16 | 43165 | 204.57 | 890 | 892 | 206.6 |
| D | 2 | 152 | 249354 | 1128.27 | 890 | 860 | 220.2 |
| D | 9 | 85 | 115334 | 519.76 | 890 | 860 | 220.2 |
| D | 8 | 195 | 84184 | 378.33 | 890 | 860 | 220.2 |
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 |  |