Observation information
- date-obs: 2017-12-21
- time-obs: 01:26:38.276300000
- date-end: 2017-12-21
- time-end: 02:57:34.277100000
- obs_id: A04_176T01_9000001786
- exposure: 3462.80067128
- sourceid: NGC 2685
- observer: KshamaSK
- ra_pnt: 133.8942
- dec_pnt: 58.73444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_176T01_9000001786_12062cztM0_level2.evt
| modeM0/AS1A04_176T01_9000001786_12062cztM0_level2_quad_clean.evt
|
| Size (bytes) | 417,219,840 | 68,304,960 |
| Size | 397.9 MB
| 65.1 MB
|
| Events in quadrant A | 2,492,567 | 437,503 |
| Events in quadrant B | 4,038,731 | 422,005 |
| Events in quadrant C | 2,376,726 | 427,255 |
| Events in quadrant D | 3,370,353 | 413,395 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10945 | 2 |
| B | 0 | 15704 | 1 |
| C | 0 | 10822 | 1 |
| D | 0 | 13691 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 106 | 0 |
| B | 0 | 106 | 0 |
| C | 0 | 106 | 0 |
| D | 0 | 106 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5256 | 85 | 1.617199% |
| B | 5256 | 440 | 8.371385% |
| C | 5256 | 50 | 0.951294% |
| D | 5256 | 250 | 4.756469% |
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 | 5457 | 5257 | 6 | 6 | 0.11% | 0.11% |  |
| B | 5457 | 5257 | 207 | 207 | 3.79% | 3.94% |  |
| C | 5457 | 5258 | 0 | 0 | 0.00% | 0.00% |  |
| D | 5457 | 5258 | 146 | 146 | 2.68% | 2.78% |  |
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 | 13 | 251 | 18973 | 140.87 | 632 | 618 | 130.3 |
| A | 1 | 162 | 15236 | 112.19 | 632 | 618 | 130.3 |
| A | 1 | 178 | 6035 | 41.57 | 632 | 618 | 130.3 |
| B | 4 | 239 | 1212359 | 10059.54 | 617 | 600 | 120.5 |
| B | 4 | 206 | 286365 | 2372.31 | 617 | 600 | 120.5 |
| B | 15 | 204 | 73660 | 606.51 | 617 | 600 | 120.5 |
| C | 13 | 61 | 4448 | 27.01 | 609 | 612 | 142.0 |
| C | 3 | 202 | 1521 | 6.4 | 609 | 612 | 142.0 |
| C | 14 | 234 | 1520 | 6.39 | 609 | 612 | 142.0 |
| D | 1 | 52 | 857572 | 5997.55 | 592 | 573 | 142.9 |
| D | 8 | 195 | 159420 | 1111.66 | 592 | 573 | 142.9 |
| D | 10 | 50 | 32693 | 224.79 | 592 | 573 | 142.9 |
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 |  |