Observation information
- date-obs: 2017-10-23
- time-obs: 20:11:35.624400000
- date-end: 2017-10-24
- time-end: 08:22:21.647300000
- obs_id: A04_171T01_9000001634
- exposure: 19952.4271608
- 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_11207cztM0_level2.evt
| modeM0/AS1A04_171T01_9000001634_11207cztM0_level2_quad_clean.evt
|
| Size (bytes) | 3,460,046,400 | 420,943,680 |
| Size | 3.2 GB
| 401.4 MB
|
| Events in quadrant A | 38,699,761 | 2,324,909 |
| Events in quadrant B | 21,420,010 | 2,697,388 |
| Events in quadrant C | 17,226,103 | 2,689,717 |
| Events in quadrant D | 24,942,103 | 2,483,271 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 758 | 2 |
| B | 0 | 758 | 2 |
| C | 0 | 758 | 2 |
| D | 0 | 758 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 141363 | 1117 |
| B | 0 | 88103 | 146 |
| C | 0 | 76870 | 153 |
| D | 0 | 99653 | 119 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 65 | 0 |
| B | 0 | 65 | 0 |
| C | 0 | 65 | 0 |
| D | 0 | 65 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 37086 | 7253 | 19.557245% |
| B | 37153 | 1472 | 3.961995% |
| C | 37143 | 468 | 1.259995% |
| D | 37161 | 2236 | 6.017061% |
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 | 43846 | 37108 | 5312 | 5312 | 12.12% | 14.31% |  |
| B | 43846 | 37198 | 470 | 470 | 1.07% | 1.26% |  |
| C | 43846 | 37185 | 14 | 14 | 0.03% | 0.04% |  |
| D | 43846 | 37197 | 1460 | 1460 | 3.33% | 3.93% |  |
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 | 15 | 239 | 18074099 | 22159.38 | 4027 | 3937 | 815.5 |
| A | 8 | 15 | 3016196 | 3693.92 | 4027 | 3937 | 815.5 |
| A | 8 | 5 | 1570652 | 1921.26 | 4027 | 3937 | 815.5 |
| B | 4 | 239 | 3250621 | 3860.76 | 4451 | 4340 | 840.8 |
| B | 4 | 80 | 229574 | 267.87 | 4451 | 4340 | 840.8 |
| B | 15 | 204 | 189738 | 220.49 | 4451 | 4340 | 840.8 |
| C | 1 | 3 | 90048 | 84.48 | 4386 | 4413 | 1013.7 |
| C | 13 | 61 | 31876 | 27.09 | 4386 | 4413 | 1013.7 |
| C | 12 | 4 | 22018 | 17.37 | 4386 | 4413 | 1013.7 |
| D | 1 | 52 | 3189514 | 3160.1 | 4231 | 4121 | 1008.0 |
| D | 12 | 157 | 1542616 | 1526.28 | 4231 | 4121 | 1008.0 |
| D | 2 | 14 | 814541 | 803.98 | 4231 | 4121 | 1008.0 |
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 |  |