Observation information
- date-obs: 2016-10-18
- time-obs: 07:04:57.464000000
- date-end: 2016-10-18
- time-end: 09:19:00.462000000
- obs_id: A02_098T01_9000000736
- exposure: 4710.13475873
- 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_05717cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05717cztM0_level2_quad_clean.evt
|
| Size (bytes) | 477,417,600 | 88,297,920 |
| Size | 455.3 MB
| 84.2 MB
|
| Events in quadrant A | 3,167,666 | 563,934 |
| Events in quadrant B | 3,499,056 | 568,422 |
| Events in quadrant C | 3,121,559 | 565,970 |
| Events in quadrant D | 4,242,277 | 535,594 |
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 | 13339 | 4 |
| B | 0 | 14120 | 1 |
| C | 0 | 13313 | 1 |
| D | 0 | 16881 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6301 | 113 | 1.793366% |
| B | 6302 | 130 | 2.062837% |
| C | 6302 | 111 | 1.761346% |
| D | 6302 | 337 | 5.347509% |
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 | 7547 | 6302 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7547 | 6303 | 8 | 8 | 0.11% | 0.13% |  |
| C | 7547 | 6302 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7547 | 6303 | 174 | 174 | 2.31% | 2.76% |  |
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 | 12 | 194 | 8093 | 43.32 | 820 | 805 | 168.2 |
| A | 0 | 226 | 8079 | 43.23 | 820 | 805 | 168.2 |
| A | 13 | 14 | 6053 | 31.19 | 820 | 805 | 168.2 |
| B | 10 | 245 | 77684 | 497.67 | 818 | 800 | 154.5 |
| B | 11 | 51 | 64477 | 412.18 | 818 | 800 | 154.5 |
| B | 0 | 214 | 60563 | 386.84 | 818 | 800 | 154.5 |
| C | 9 | 16 | 25339 | 136.7 | 788 | 795 | 179.5 |
| C | 14 | 67 | 9995 | 51.24 | 788 | 795 | 179.5 |
| C | 8 | 222 | 7469 | 37.17 | 788 | 795 | 179.5 |
| D | 2 | 152 | 875087 | 4562.72 | 789 | 767 | 191.6 |
| D | 12 | 233 | 140583 | 729.64 | 789 | 767 | 191.6 |
| D | 12 | 221 | 105596 | 547.06 | 789 | 767 | 191.6 |
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 |  |