Observation information
- date-obs: 2016-10-18
- time-obs: 03:28:17.469300000
- date-end: 2016-10-18
- time-end: 05:49:48.465400000
- obs_id: A02_098T01_9000000736
- exposure: 3664.9393196
- 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_05715cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05715cztM0_level2_quad_clean.evt
|
| Size (bytes) | 454,596,480 | 67,654,080 |
| Size | 433.5 MB
| 64.5 MB
|
| Events in quadrant A | 3,066,920 | 404,721 |
| Events in quadrant B | 3,353,677 | 407,491 |
| Events in quadrant C | 3,581,103 | 405,994 |
| Events in quadrant D | 3,336,844 | 389,562 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13118 | 5 |
| B | 0 | 13871 | 2 |
| C | 0 | 14753 | 13 |
| D | 0 | 14027 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6314 | 72 | 1.140323% |
| B | 6315 | 82 | 1.298496% |
| C | 6311 | 276 | 4.373316% |
| D | 6315 | 101 | 1.599367% |
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 | 7515 | 6316 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7515 | 6315 | 6 | 6 | 0.08% | 0.10% |  |
| C | 7515 | 6316 | 177 | 177 | 2.36% | 2.80% |  |
| D | 7515 | 6316 | 42 | 42 | 0.56% | 0.66% |  |
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 | 226 | 7762 | 43.39 | 795 | 778 | 161.0 |
| A | 12 | 194 | 7516 | 41.86 | 795 | 778 | 161.0 |
| A | 13 | 34 | 3788 | 18.7 | 795 | 778 | 161.0 |
| B | 15 | 204 | 108910 | 717.06 | 800 | 784 | 150.8 |
| B | 11 | 51 | 40095 | 260.7 | 800 | 784 | 150.8 |
| B | 0 | 214 | 37674 | 244.64 | 800 | 784 | 150.8 |
| C | 9 | 16 | 630325 | 3609.25 | 755 | 758 | 174.4 |
| C | 13 | 61 | 6092 | 30.58 | 755 | 758 | 174.4 |
| C | 14 | 67 | 3447 | 15.42 | 755 | 758 | 174.4 |
| D | 2 | 152 | 191957 | 1020.51 | 770 | 748 | 187.4 |
| D | 12 | 233 | 78875 | 416.97 | 770 | 748 | 187.4 |
| D | 2 | 14 | 69069 | 364.64 | 770 | 748 | 187.4 |
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 |  |