Observation information
- date-obs: 2018-01-18
- time-obs: 06:18:37.305500000
- date-end: 2018-01-18
- time-end: 08:28:08.312400000
- obs_id: A04_174T01_9000001850
- exposure: 3561.24726589
- 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_9000001850_12480cztM0_level2.evt
| modeM0/AS1A04_174T01_9000001850_12480cztM0_level2_quad_clean.evt
|
| Size (bytes) | 683,461,440 | 83,396,160 |
| Size | 651.8 MB
| 79.5 MB
|
| Events in quadrant A | 5,481,002 | 503,593 |
| Events in quadrant B | 4,175,281 | 520,315 |
| Events in quadrant C | 3,538,244 | 521,212 |
| Events in quadrant D | 7,001,620 | 462,963 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21014 | 3 |
| B | 0 | 16983 | 2 |
| C | 0 | 15484 | 2 |
| D | 0 | 25875 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7435 | 348 | 4.680565% |
| B | 7435 | 283 | 3.806321% |
| C | 7435 | 156 | 2.098184% |
| D | 7436 | 1122 | 15.088757% |
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 | 7771 | 7436 | 106 | 106 | 1.36% | 1.43% |  |
| B | 7771 | 7437 | 30 | 30 | 0.39% | 0.40% |  |
| C | 7771 | 7437 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7772 | 7438 | 958 | 958 | 12.33% | 12.88% |  |
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 | 0 | 23 | 1590405 | 8517.15 | 915 | 896 | 186.6 |
| A | 0 | 226 | 123132 | 654.98 | 915 | 896 | 186.6 |
| A | 12 | 189 | 108063 | 574.24 | 915 | 896 | 186.6 |
| B | 4 | 239 | 363579 | 2006.62 | 926 | 902 | 180.7 |
| B | 0 | 214 | 57428 | 312.74 | 926 | 902 | 180.7 |
| B | 0 | 85 | 44359 | 240.44 | 926 | 902 | 180.7 |
| C | 13 | 61 | 6538 | 26.48 | 907 | 912 | 212.4 |
| C | 12 | 4 | 2643 | 8.15 | 907 | 912 | 212.4 |
| C | 14 | 234 | 2319 | 6.62 | 907 | 912 | 212.4 |
| D | 1 | 52 | 3536113 | 17098.98 | 858 | 836 | 206.8 |
| D | 7 | 71 | 92156 | 441.69 | 858 | 836 | 206.8 |
| D | 2 | 14 | 66605 | 318.1 | 858 | 836 | 206.8 |
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 |  |