Observation information
- date-obs: 2017-07-30
- time-obs: 09:27:13.301400000
- date-end: 2017-07-30
- time-end: 13:29:00.038400000
- obs_id: A03_107T01_9000001418
- exposure: 8131.8599518
- sourceid: 4U 1820-30
- observer: graman
- ra_pnt: 275.9188
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_107T01_9000001418_09937cztM0_level2.evt
| modeM0/AS1A03_107T01_9000001418_09937cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,027,543,680 | 155,183,040 |
| Size | 979.9 MB
| 148.0 MB
|
| Events in quadrant A | 7,526,193 | 947,465 |
| Events in quadrant B | 6,463,691 | 983,077 |
| Events in quadrant C | 5,795,869 | 978,055 |
| Events in quadrant D | 10,465,201 | 903,328 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 30910 | 165 |
| B | 0 | 27548 | 129 |
| C | 0 | 26423 | 134 |
| D | 0 | 40115 | 401 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 262 | 0 |
| B | 0 | 262 | 0 |
| C | 0 | 262 | 0 |
| D | 0 | 262 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 1 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 12860 | 427 | 3.320373% |
| B | 12863 | 309 | 2.402239% |
| C | 12858 | 223 | 1.734329% |
| D | 12824 | 881 | 6.869931% |
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 | 14507 | 12920 | 139 | 139 | 0.96% | 1.08% |  |
| B | 14507 | 12920 | 25 | 25 | 0.17% | 0.19% |  |
| C | 14507 | 12921 | 1 | 1 | 0.01% | 0.01% |  |
| D | 14507 | 12909 | 657 | 657 | 4.53% | 5.09% |  |
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 | 15 | 239 | 1613591 | 5225.28 | 1508 | 1475 | 308.5 |
| A | 15 | 174 | 90464 | 288.44 | 1508 | 1475 | 308.5 |
| A | 14 | 111 | 16791 | 49.64 | 1508 | 1475 | 308.5 |
| B | 4 | 81 | 135687 | 459.01 | 1522 | 1480 | 292.4 |
| B | 10 | 252 | 127256 | 430.17 | 1522 | 1480 | 292.4 |
| B | 0 | 214 | 94946 | 319.67 | 1522 | 1480 | 292.4 |
| C | 14 | 234 | 12522 | 31.91 | 1479 | 1480 | 346.0 |
| C | 13 | 61 | 11240 | 28.21 | 1479 | 1480 | 346.0 |
| C | 12 | 4 | 8439 | 20.11 | 1479 | 1480 | 346.0 |
| D | 1 | 52 | 2502772 | 6981.03 | 1439 | 1396 | 358.3 |
| D | 2 | 16 | 1043134 | 2907.36 | 1439 | 1396 | 358.3 |
| D | 12 | 233 | 523411 | 1456.88 | 1439 | 1396 | 358.3 |
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 |  |