Observation information
- date-obs: 2015-12-14
- time-obs: 23:05:46.312100000
- date-end: 2015-12-15
- time-end: 01:33:04.027700000
- obs_id: P01_997T03_9000000216
- exposure: 6830.64738142
- sourceid: 4U 1847+78
- observer: annapurni
- ra_pnt: 280.5374
- dec_pnt: 79.77142
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1P01_997T03_9000000216_01153cztM0_level2.evt
| modeM0/AS1P01_997T03_9000000216_01153cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,105,214,400 | 112,472,640 |
| Size | 1.0 GB
| 107.3 MB
|
| Events in quadrant A | 8,338,392 | 716,984 |
| Events in quadrant B | 8,727,347 | 755,877 |
| Events in quadrant C | 8,396,772 | 742,949 |
| Events in quadrant D | 7,553,196 | 711,480 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29660 | 3 |
| B | 0 | 30835 | 2 |
| C | 0 | 29832 | 2 |
| D | 0 | 27366 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6868 | 10 | 0.145603% |
| B | 6868 | 19 | 0.276645% |
| C | 6868 | 5 | 0.072801% |
| D | 6868 | 7 | 0.101922% |
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 | 8838 | 6870 | 350 | 350 | 3.96% | 5.09% |  |
| B | 8838 | 6870 | 312 | 312 | 3.53% | 4.54% |  |
| C | 8838 | 6870 | 285 | 285 | 3.22% | 4.15% |  |
| D | 8838 | 6870 | 286 | 286 | 3.24% | 4.16% |  |
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 | 14 | 5 | 18698 | 32.31 | 2167 | 2193 | 510.8 |
| A | 11 | 79 | 7215 | 9.83 | 2167 | 2193 | 510.8 |
| A | 3 | 111 | 7090 | 9.59 | 2167 | 2193 | 510.8 |
| B | 8 | 4 | 100685 | 188.34 | 2234 | 2249 | 522.6 |
| B | 15 | 22 | 40704 | 73.58 | 2234 | 2249 | 522.6 |
| B | 5 | 249 | 33272 | 59.36 | 2234 | 2249 | 522.6 |
| C | 15 | 241 | 305489 | 539.73 | 2021 | 2098 | 562.1 |
| C | 9 | 83 | 134115 | 234.86 | 2021 | 2098 | 562.1 |
| C | 3 | 111 | 21823 | 35.09 | 2021 | 2098 | 562.1 |
| D | 13 | 252 | 61628 | 98.45 | 1990 | 2067 | 605.0 |
| D | 2 | 170 | 23699 | 35.76 | 1990 | 2067 | 605.0 |
| D | 10 | 215 | 17096 | 24.84 | 1990 | 2067 | 605.0 |
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 |  |