Observation information
- date-obs: 2018-02-27
- time-obs: 02:54:59.578600000
- date-end: 2018-02-27
- time-end: 14:07:50.583900000
- obs_id: A04_176T02_9000001924
- exposure: 19327.4429807
- sourceid: NGC 4395
- observer: KshamaSK
- ra_pnt: 186.4533
- dec_pnt: 33.54694
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A04_176T02_9000001924cztM0_level2_bc.evt
| modeM0/AS1A04_176T02_9000001924cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,512,468,800 | 405,904,320 |
Size | 2.3 GB
| 387.1 MB
|
Events in quadrant A | 8,313,687 | 2,686,224 |
Events in quadrant B | 17,492,703 | 2,434,668 |
Events in quadrant C | 7,240,305 | 2,709,977 |
Events in quadrant D | 40,621,806 | 2,017,884 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 724 | 0 |
B | 0 | 724 | 0 |
C | 0 | 724 | 0 |
D | 0 | 724 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 77640 | 0 |
B | 0 | 132936 | 0 |
C | 0 | 73545 | 0 |
D | 0 | 180209 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 48 | 0 |
B | 0 | 48 | 0 |
C | 0 | 48 | 0 |
D | 0 | 48 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 35515 | 803 | 2.261016% |
B | 35517 | 9407 | 26.485908% |
C | 35517 | 402 | 1.131852% |
D | 35515 | 14482 | 40.777136% |
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 | 40373 | 35518 | 1 | 1 | 0.00% | 0.00% |  |
B | 40373 | 35492 | 771 | 771 | 1.91% | 2.17% |  |
C | 40373 | 35520 | 0 | 0 | 0.00% | 0.00% |  |
D | 40373 | 35516 | 10281 | 10281 | 25.47% | 28.95% |  |
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 | 12 | 189 | 391208 | 964.66 | 1821 | 1784 | 403.7 |
A | 15 | 223 | 382963 | 944.24 | 1821 | 1784 | 403.7 |
A | 8 | 15 | 268814 | 661.47 | 1821 | 1784 | 403.7 |
B | 4 | 239 | 7477744 | 25186.99 | 1532 | 1489 | 296.8 |
B | 0 | 85 | 3617451 | 12181.93 | 1532 | 1489 | 296.8 |
B | 0 | 219 | 114735 | 381.52 | 1532 | 1489 | 296.8 |
C | 15 | 208 | 156685 | 388.02 | 1792 | 1763 | 399.3 |
C | 14 | 234 | 40314 | 96.56 | 1792 | 1763 | 399.3 |
C | 12 | 4 | 16506 | 36.93 | 1792 | 1763 | 399.3 |
D | 1 | 52 | 33666020 | 101716.59 | 1416 | 1366 | 331.0 |
D | 10 | 157 | 866113 | 2612.8 | 1416 | 1366 | 331.0 |
D | 1 | 255 | 145413 | 435.23 | 1416 | 1366 | 331.0 |
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 |  |