Observation information
- date-obs: 2017-10-14
- time-obs: 20:51:09.420200000
- date-end: 2017-10-15
- time-end: 09:58:48.423500000
- obs_id: G08_075T01_9000001616
- exposure: 24215.49013
- sourceid: Cygnus X-1
- observer: ravibt
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1G08_075T01_9000001616cztM0_level2.evt
| modeM0/AS1G08_075T01_9000001616cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,112,971,840 | 505,134,720 |
Size | 2.9 GB
| 481.7 MB
|
Events in quadrant A | 22,163,878 | 3,231,152 |
Events in quadrant B | 25,863,321 | 3,215,552 |
Events in quadrant C | 17,935,988 | 3,220,322 |
Events in quadrant D | 25,730,348 | 2,998,769 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 90235 | 0 |
B | 0 | 101597 | 0 |
C | 0 | 79033 | 0 |
D | 0 | 101943 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 784 | 0 |
B | 0 | 784 | 0 |
C | 0 | 784 | 0 |
D | 0 | 784 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 89 | 0 |
B | 0 | 89 | 0 |
C | 0 | 89 | 0 |
D | 0 | 89 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 38350 | 614 | 1.601043% |
B | 38350 | 2106 | 5.491525% |
C | 38350 | 325 | 0.847458% |
D | 38350 | 1684 | 4.391134% |
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 | 47260 | 38357 | 31 | 31 | 0.07% | 0.08% |  |
B | 47260 | 38355 | 981 | 981 | 2.08% | 2.56% |  |
C | 47260 | 38358 | 5 | 5 | 0.01% | 0.01% |  |
D | 47260 | 38357 | 1209 | 1209 | 2.56% | 3.15% |  |
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 | 174 | 2021451 | 2126.96 | 4756 | 4655 | 948.2 |
A | 8 | 15 | 1779736 | 1872.04 | 4756 | 4655 | 948.2 |
A | 0 | 226 | 42765 | 40.19 | 4756 | 4655 | 948.2 |
B | 4 | 239 | 6930515 | 7849.65 | 4693 | 4586 | 882.3 |
B | 0 | 214 | 240503 | 267.38 | 4693 | 4586 | 882.3 |
B | 15 | 204 | 206750 | 229.13 | 4693 | 4586 | 882.3 |
C | 14 | 234 | 42599 | 36.27 | 4590 | 4627 | 1047.0 |
C | 13 | 61 | 34000 | 28.06 | 4590 | 4627 | 1047.0 |
C | 8 | 222 | 12214 | 7.25 | 4590 | 4627 | 1047.0 |
D | 10 | 253 | 4030740 | 3753.59 | 4507 | 4387 | 1072.7 |
D | 11 | 129 | 2265767 | 2108.18 | 4507 | 4387 | 1072.7 |
D | 1 | 52 | 789680 | 732.09 | 4507 | 4387 | 1072.7 |
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 |  |