Observation information
- date-obs: 2018-02-02
- time-obs: 12:22:19.975800000
- date-end: 2018-02-02
- time-end: 14:13:39.974700000
- obs_id: A04_174T01_9000001876
- exposure: 4327.98215046
- 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_12706cztM0_level2.evt
| modeM0/AS1A04_174T01_9000001876_12706cztM0_level2_quad_clean.evt
|
| Size (bytes) | 454,858,560 | 98,686,080 |
| Size | 433.8 MB
| 94.1 MB
|
| Events in quadrant A | 2,852,103 | 679,250 |
| Events in quadrant B | 4,042,522 | 634,127 |
| Events in quadrant C | 3,390,672 | 651,608 |
| Events in quadrant D | 3,116,920 | 638,877 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11914 | 2 |
| B | 0 | 15571 | 1 |
| C | 0 | 13588 | 1 |
| D | 0 | 12776 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 112 | 0 |
| B | 0 | 112 | 0 |
| C | 0 | 112 | 0 |
| D | 0 | 112 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5495 | 54 | 0.982712% |
| B | 5495 | 486 | 8.844404% |
| C | 5495 | 200 | 3.639672% |
| D | 5495 | 94 | 1.710646% |
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 | 6681 | 5497 | 0 | 0 | 0.00% | 0.00% |  |
| B | 6681 | 5497 | 304 | 304 | 4.55% | 5.53% |  |
| C | 6681 | 5497 | 198 | 198 | 2.96% | 3.60% |  |
| D | 6681 | 5497 | 58 | 58 | 0.87% | 1.06% |  |
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 | 11 | 29 | 66808 | 455.05 | 711 | 698 | 145.3 |
| A | 12 | 189 | 28320 | 190.13 | 711 | 698 | 145.3 |
| A | 8 | 15 | 22739 | 151.71 | 711 | 698 | 145.3 |
| B | 4 | 239 | 1092885 | 8611.67 | 670 | 657 | 126.8 |
| B | 4 | 81 | 177479 | 1394.15 | 670 | 657 | 126.8 |
| B | 3 | 64 | 67944 | 530.52 | 670 | 657 | 126.8 |
| C | 15 | 208 | 763312 | 4939.32 | 673 | 682 | 154.4 |
| C | 13 | 61 | 4910 | 27.38 | 673 | 682 | 154.4 |
| C | 14 | 234 | 3011 | 15.08 | 673 | 682 | 154.4 |
| D | 1 | 52 | 349466 | 1954.92 | 674 | 664 | 178.4 |
| D | 10 | 253 | 71589 | 397.51 | 674 | 664 | 178.4 |
| D | 8 | 195 | 37751 | 207.86 | 674 | 664 | 178.4 |
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 |  |