Observation information
- date-obs: 2021-09-01
- time-obs: 17:39:31.751000000
- date-end: 2021-09-01
- time-end: 21:23:15.075500000
- obs_id: A10_109T01_9000004678
- exposure: 5309.02776881
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A10_109T01_9000004678_32056cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004678_32056cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,019,574,720 | 129,790,080 |
Size | 972.3 MB
| 123.8 MB
|
Events in quadrant A | 5,673,337 | 808,578 |
Events in quadrant B | 9,643,107 | 785,041 |
Events in quadrant C | 6,266,482 | 765,950 |
Events in quadrant D | 8,486,258 | 741,370 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 14 | 0 |
B | 0 | 14 | 0 |
C | 0 | 14 | 0 |
D | 0 | 14 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 242 | 0 |
B | 0 | 242 | 0 |
C | 0 | 242 | 0 |
D | 0 | 242 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 24806 | 2 |
B | 0 | 37507 | 2 |
C | 0 | 26359 | 2 |
D | 0 | 33316 | 2 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 11993 | 52 | 0.433586% |
B | 11993 | 277 | 2.309681% |
C | 11992 | 226 | 1.884590% |
D | 11993 | 218 | 1.817727% |
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 | 13424 | 11994 | 0 | 0 | 0.00% | 0.00% |  |
B | 13424 | 11993 | 96 | 96 | 0.72% | 0.80% |  |
C | 13423 | 11994 | 21 | 21 | 0.16% | 0.18% |  |
D | 13424 | 11995 | 155 | 155 | 1.15% | 1.29% |  |
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 | 13 | 254 | 23359 | 75.03 | 1463 | 1438 | 292.2 |
A | 13 | 6 | 21940 | 70.17 | 1463 | 1438 | 292.2 |
A | 3 | 137 | 14638 | 45.18 | 1463 | 1438 | 292.2 |
B | 6 | 159 | 3313450 | 12062.48 | 1439 | 1398 | 274.6 |
B | 5 | 172 | 382847 | 1389.24 | 1439 | 1398 | 274.6 |
B | 10 | 245 | 156614 | 565.3 | 1439 | 1398 | 274.6 |
C | 0 | 10 | 258379 | 785.74 | 1395 | 1406 | 327.0 |
C | 14 | 238 | 240592 | 731.35 | 1395 | 1406 | 327.0 |
C | 3 | 233 | 122551 | 370.42 | 1395 | 1406 | 327.0 |
D | 8 | 195 | 2410884 | 7218.37 | 1401 | 1364 | 333.8 |
D | 12 | 233 | 648316 | 1938.12 | 1401 | 1364 | 333.8 |
D | 2 | 250 | 96641 | 285.43 | 1401 | 1364 | 333.8 |
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 |  |