Observation information
- date-obs: 2017-12-21
- time-obs: 01:26:38.276300000
- date-end: 2017-12-21
- time-end: 13:43:37.287800000
- obs_id: A04_176T01_9000001786
- exposure: 24842.1117479
- 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_9000001786cztM0_level2_bc.evt
| modeM0/AS1A04_176T01_9000001786cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,631,975,040 | 495,123,840 |
Size | 1.5 GB
| 472.2 MB
|
Events in quadrant A | 8,597,433 | 3,186,259 |
Events in quadrant B | 17,431,630 | 3,040,574 |
Events in quadrant C | 7,456,166 | 3,111,236 |
Events in quadrant D | 13,288,775 | 2,988,430 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 54 | 0 |
B | 0 | 54 | 0 |
C | 0 | 54 | 0 |
D | 0 | 54 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 82756 | 0 |
B | 0 | 117550 | 0 |
C | 0 | 79273 | 0 |
D | 0 | 97235 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 790 | 0 |
B | 0 | 790 | 0 |
C | 0 | 790 | 0 |
D | 0 | 790 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 38880 | 490 | 1.260288% |
B | 38880 | 2730 | 7.021605% |
C | 38880 | 230 | 0.591564% |
D | 38880 | 1341 | 3.449074% |
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 | 44221 | 38874 | 8 | 8 | 0.02% | 0.02% |  |
B | 44221 | 38875 | 72 | 72 | 0.16% | 0.19% |  |
C | 44221 | 38879 | 0 | 0 | 0.00% | 0.00% |  |
D | 44221 | 38877 | 246 | 246 | 0.56% | 0.63% |  |
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 | 244246 | 568.91 | 1968 | 1931 | 425.9 |
A | 13 | 251 | 223552 | 520.33 | 1968 | 1931 | 425.9 |
A | 1 | 162 | 209024 | 486.22 | 1968 | 1931 | 425.9 |
B | 4 | 206 | 4970602 | 13694.54 | 1905 | 1856 | 362.8 |
B | 4 | 239 | 4180931 | 11518.1 | 1905 | 1856 | 362.8 |
B | 15 | 204 | 441805 | 1212.56 | 1905 | 1856 | 362.8 |
C | 0 | 207 | 24592 | 53.79 | 1896 | 1861 | 422.6 |
C | 14 | 234 | 18475 | 39.31 | 1896 | 1861 | 422.6 |
C | 13 | 61 | 11512 | 22.84 | 1896 | 1861 | 422.6 |
D | 1 | 52 | 3842362 | 8793.03 | 1890 | 1821 | 436.8 |
D | 8 | 195 | 1233630 | 2820.26 | 1890 | 1821 | 436.8 |
D | 10 | 199 | 185641 | 420.86 | 1890 | 1821 | 436.8 |
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 |  |