Observation information
- date-obs: 2021-11-03
- time-obs: 23:13:30.730800000
- date-end: 2021-11-09
- time-end: 04:56:58.528300000
- obs_id: A11_080T01_9000004756
- exposure: 24905.3679064
- sourceid: Cygnus X-1
- observer: ajayratheesh
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A11_080T01_9000004756cztM0_level2_bc.evt
| modeM0/AS1A11_080T01_9000004756cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,906,536,960 | 528,765,120 |
Size | 1.8 GB
| 504.3 MB
|
Events in quadrant A | 7,466,748 | 3,596,831 |
Events in quadrant B | 11,821,703 | 3,462,963 |
Events in quadrant C | 8,924,011 | 3,486,319 |
Events in quadrant D | 27,156,976 | 3,076,370 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 714 | 0 |
B | 0 | 716 | 0 |
C | 0 | 713 | 0 |
D | 0 | 716 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 133 | 0 |
B | 0 | 136 | 0 |
C | 0 | 135 | 0 |
D | 0 | 137 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 70692 | 0 |
B | 0 | 89959 | 0 |
C | 0 | 75587 | 0 |
D | 0 | 136012 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 34852 | 29 | 0.083209% |
B | 34805 | 1919 | 5.513576% |
C | 34848 | 463 | 1.328627% |
D | 34783 | 4578 | 13.161602% |
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 | 122197 | 34975 | 2 | 2 | 0.00% | 0.01% |  |
B | 122199 | 34890 | 142 | 142 | 0.12% | 0.41% |  |
C | 122199 | 34971 | 70 | 70 | 0.06% | 0.20% |  |
D | 122198 | 34887 | 2152 | 2152 | 1.76% | 6.17% |  |
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 | 47 | 79961 | 182.83 | 1865 | 1840 | 427.3 |
A | 13 | 254 | 62306 | 141.51 | 1865 | 1840 | 427.3 |
A | 13 | 6 | 49465 | 111.46 | 1865 | 1840 | 427.3 |
B | 5 | 172 | 3751346 | 10065.42 | 1819 | 1787 | 372.5 |
B | 0 | 219 | 268285 | 715.39 | 1819 | 1787 | 372.5 |
B | 0 | 229 | 127111 | 336.42 | 1819 | 1787 | 372.5 |
C | 0 | 10 | 858251 | 2028.76 | 1794 | 1790 | 422.2 |
C | 7 | 221 | 315518 | 743.15 | 1794 | 1790 | 422.2 |
C | 1 | 241 | 264202 | 621.59 | 1794 | 1790 | 422.2 |
D | 8 | 195 | 5710769 | 12254.61 | 1704 | 1671 | 465.9 |
D | 7 | 223 | 3492173 | 7492.38 | 1704 | 1671 | 465.9 |
D | 12 | 227 | 2828633 | 6068.09 | 1704 | 1671 | 465.9 |
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 |  |