Observation information
- date-obs: 2017-07-12
- time-obs: 12:21:15.629000000
- date-end: 2017-07-12
- time-end: 13:26:33.635200000
- obs_id: A02_198T01_9000001376
- exposure: 1877.96182928
- sourceid: 4U 1538-52
- observer: varun
- ra_pnt: 235.5973
- dec_pnt: -52.386
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_198T01_9000001376_09671cztM0_level2.evt
| modeM0/AS1A02_198T01_9000001376_09671cztM0_level2_quad_clean.evt
|
| Size (bytes) | 204,667,200 | 38,378,880 |
| Size | 195.2 MB
| 36.6 MB
|
| Events in quadrant A | 1,456,775 | 238,756 |
| Events in quadrant B | 1,527,836 | 241,873 |
| Events in quadrant C | 1,422,749 | 237,857 |
| Events in quadrant D | 1,585,161 | 230,187 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 1 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 64 | 2 |
| B | 0 | 64 | 0 |
| C | 0 | 64 | 0 |
| D | 0 | 64 | 4 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6400 | 157 |
| B | 0 | 6593 | 159 |
| C | 0 | 6360 | 158 |
| D | 0 | 6911 | 172 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2988 | 97 | 3.246319% |
| B | 2987 | 93 | 3.113492% |
| C | 2986 | 78 | 2.612190% |
| D | 2986 | 126 | 4.219692% |
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 | 3918 | 3060 | 0 | 0 | 0.00% | 0.00% |  |
| B | 3918 | 3057 | 1 | 1 | 0.03% | 0.03% |  |
| C | 3918 | 3061 | 0 | 0 | 0.00% | 0.00% |  |
| D | 3918 | 3061 | 30 | 30 | 0.77% | 0.98% |  |
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 | 1 | 162 | 15175 | 190.92 | 370 | 362 | 77.6 |
| A | 1 | 178 | 5402 | 64.96 | 370 | 362 | 77.6 |
| A | 1 | 161 | 4986 | 59.6 | 370 | 362 | 77.6 |
| B | 10 | 252 | 44492 | 607.7 | 371 | 362 | 72.6 |
| B | 0 | 219 | 11676 | 155.8 | 371 | 362 | 72.6 |
| B | 15 | 85 | 10642 | 141.56 | 371 | 362 | 72.6 |
| C | 13 | 61 | 2807 | 28.7 | 364 | 365 | 85.1 |
| C | 14 | 234 | 959 | 6.98 | 364 | 365 | 85.1 |
| C | 3 | 202 | 915 | 6.46 | 364 | 365 | 85.1 |
| D | 12 | 233 | 94057 | 998.5 | 359 | 350 | 93.8 |
| D | 2 | 152 | 81398 | 863.61 | 359 | 350 | 93.8 |
| D | 8 | 195 | 17767 | 185.59 | 359 | 350 | 93.8 |
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 |  |