Observation information
- date-obs: 2017-10-23
- time-obs: 00:34:54.589400000
- date-end: 2017-10-23
- time-end: 02:46:57.592200000
- obs_id: A04_171T01_9000001634
- exposure: 4037.28011881
- sourceid: NGC 424
- observer: sachi
- ra_pnt: 17.86511
- dec_pnt: -38.08347
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_171T01_9000001634_11189cztM0_level2.evt
| modeM0/AS1A04_171T01_9000001634_11189cztM0_level2_quad_clean.evt
|
| Size (bytes) | 492,552,000 | 88,508,160 |
| Size | 469.7 MB
| 84.4 MB
|
| Events in quadrant A | 3,513,832 | 558,606 |
| Events in quadrant B | 4,152,082 | 578,644 |
| Events in quadrant C | 3,060,561 | 571,463 |
| Events in quadrant D | 3,755,661 | 524,496 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14507 | 3 |
| B | 0 | 16340 | 2 |
| C | 0 | 13171 | 2 |
| D | 0 | 15238 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6409 | 63 | 0.982993% |
| B | 6409 | 270 | 4.212826% |
| C | 6409 | 22 | 0.343267% |
| D | 6409 | 155 | 2.418474% |
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 | 7709 | 6410 | 26 | 26 | 0.34% | 0.41% |  |
| B | 7709 | 6410 | 141 | 141 | 1.83% | 2.20% |  |
| C | 7709 | 6410 | 1 | 1 | 0.01% | 0.02% |  |
| D | 7709 | 6410 | 134 | 134 | 1.74% | 2.09% |  |
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 | 8 | 5 | 288422 | 1833.23 | 776 | 760 | 156.9 |
| A | 14 | 238 | 92288 | 583.3 | 776 | 760 | 156.9 |
| A | 8 | 15 | 81412 | 513.98 | 776 | 760 | 156.9 |
| B | 4 | 239 | 950137 | 6420.9 | 784 | 764 | 147.9 |
| B | 0 | 187 | 59110 | 394.61 | 784 | 764 | 147.9 |
| B | 15 | 204 | 21851 | 142.61 | 784 | 764 | 147.9 |
| C | 0 | 10 | 27952 | 150.73 | 777 | 785 | 180.2 |
| C | 13 | 61 | 5703 | 27.29 | 777 | 785 | 180.2 |
| C | 1 | 3 | 3034 | 12.48 | 777 | 785 | 180.2 |
| D | 2 | 14 | 423499 | 2373.25 | 750 | 731 | 178.1 |
| D | 8 | 195 | 171463 | 958.42 | 750 | 731 | 178.1 |
| D | 13 | 104 | 71524 | 397.4 | 750 | 731 | 178.1 |
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 |  |