Observation information
- date-obs: 2017-07-26
- time-obs: 11:24:15.882600000
- date-end: 2017-07-26
- time-end: 15:27:20.889800000
- obs_id: A03_117T06_9000001404
- exposure: 7988.34595843
- sourceid: 4U 1957+115
- observer: dipak
- ra_pnt: 299.8509
- dec_pnt: 11.709
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_117T06_9000001404_09879cztM0_level2.evt
| modeM0/AS1A03_117T06_9000001404_09879cztM0_level2_quad_clean.evt
|
| Size (bytes) | 946,031,040 | 153,924,480 |
| Size | 902.2 MB
| 146.8 MB
|
| Events in quadrant A | 5,975,043 | 963,993 |
| Events in quadrant B | 7,062,996 | 968,009 |
| Events in quadrant C | 7,862,749 | 928,455 |
| Events in quadrant D | 6,868,008 | 901,259 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26663 | 55 |
| B | 0 | 29599 | 53 |
| C | 0 | 32354 | 115 |
| D | 0 | 29250 | 73 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 268 | 4 |
| B | 0 | 268 | 0 |
| C | 0 | 268 | 2 |
| D | 0 | 268 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 13024 | 235 | 1.804361% |
| B | 13027 | 577 | 4.429262% |
| C | 13015 | 755 | 5.800999% |
| D | 13022 | 375 | 2.879742% |
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 | 14585 | 13051 | 0 | 0 | 0.00% | 0.00% |  |
| B | 14585 | 13052 | 241 | 241 | 1.65% | 1.85% |  |
| C | 14585 | 13052 | 256 | 256 | 1.76% | 1.96% |  |
| D | 14585 | 13052 | 168 | 168 | 1.15% | 1.29% |  |
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 | 13 | 251 | 19132 | 55.75 | 1544 | 1509 | 316.1 |
| A | 0 | 226 | 13909 | 39.23 | 1544 | 1509 | 316.1 |
| A | 12 | 194 | 12220 | 33.89 | 1544 | 1509 | 316.1 |
| B | 4 | 81 | 1078868 | 3667.42 | 1525 | 1483 | 293.8 |
| B | 12 | 111 | 36079 | 117.76 | 1525 | 1483 | 293.8 |
| B | 11 | 111 | 30240 | 97.89 | 1525 | 1483 | 293.8 |
| C | 4 | 254 | 2072228 | 6096.36 | 1468 | 1473 | 339.7 |
| C | 14 | 234 | 31147 | 87.36 | 1468 | 1473 | 339.7 |
| C | 14 | 67 | 19506 | 53.09 | 1468 | 1473 | 339.7 |
| D | 1 | 52 | 746579 | 1944.76 | 1474 | 1442 | 383.2 |
| D | 2 | 16 | 358709 | 932.44 | 1474 | 1442 | 383.2 |
| D | 2 | 14 | 62623 | 159.68 | 1474 | 1442 | 383.2 |
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 |  |