Observation information
- date-obs: 2018-01-31
- time-obs: 04:07:38.125500000
- date-end: 2018-01-31
- time-end: 10:01:27.008300000
- obs_id: A04_174T01_9000001876
- exposure: 10992.8018856
- sourceid: Crab
- observer: mithunnps
- ra_pnt: 83.63308
- dec_pnt: 22.0145
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_174T01_9000001876_12673cztM0_level2.evt
| modeM0/AS1A04_174T01_9000001876_12673cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,513,442,880 | 242,110,080 |
| Size | 1.4 GB
| 230.9 MB
|
| Events in quadrant A | 9,054,139 | 1,584,195 |
| Events in quadrant B | 16,245,896 | 1,325,191 |
| Events in quadrant C | 9,048,784 | 1,591,709 |
| Events in quadrant D | 10,195,707 | 1,514,612 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 39194 | 5 |
| B | 0 | 60361 | 4 |
| C | 0 | 39560 | 4 |
| D | 0 | 43149 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 392 | 0 |
| B | 0 | 392 | 0 |
| C | 0 | 392 | 0 |
| D | 0 | 392 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19094 | 269 | 1.408820% |
| B | 19094 | 3072 | 16.088824% |
| C | 19094 | 217 | 1.136483% |
| D | 19094 | 321 | 1.681156% |
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 | 21230 | 19096 | 3 | 3 | 0.01% | 0.02% |  |
| B | 21230 | 19095 | 2458 | 2458 | 11.58% | 12.87% |  |
| C | 21230 | 19097 | 28 | 28 | 0.13% | 0.15% |  |
| D | 21230 | 19096 | 142 | 142 | 0.67% | 0.74% |  |
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 | 189 | 87311 | 178.22 | 2328 | 2276 | 477.1 |
| A | 0 | 226 | 20313 | 37.8 | 2328 | 2276 | 477.1 |
| A | 12 | 194 | 17858 | 32.66 | 2328 | 2276 | 477.1 |
| B | 4 | 239 | 7037394 | 17172.27 | 2125 | 2070 | 409.7 |
| B | 3 | 64 | 359419 | 872.24 | 2125 | 2070 | 409.7 |
| B | 3 | 209 | 229766 | 555.77 | 2125 | 2070 | 409.7 |
| C | 15 | 208 | 179195 | 336.67 | 2272 | 2295 | 525.4 |
| C | 13 | 61 | 16763 | 27.53 | 2272 | 2295 | 525.4 |
| C | 14 | 234 | 11898 | 18.28 | 2272 | 2295 | 525.4 |
| D | 1 | 52 | 875116 | 1637.86 | 2241 | 2195 | 533.0 |
| D | 10 | 199 | 191444 | 355.09 | 2241 | 2195 | 533.0 |
| D | 13 | 249 | 189991 | 352.36 | 2241 | 2195 | 533.0 |
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 |  |