Observation information
- date-obs: 2018-05-26
- time-obs: 21:41:20.238100000
- date-end: 2018-05-27
- time-end: 13:17:07.208800000
- obs_id: G08_075T01_9000002120
- exposure: 22292.8581859
- 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_9000002120cztM0_level2_bc.evt
| modeM0/AS1G08_075T01_9000002120cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,898,104,320 | 504,002,880 |
Size | 1.8 GB
| 480.7 MB
|
Events in quadrant A | 8,749,160 | 3,284,449 |
Events in quadrant B | 11,389,350 | 3,214,995 |
Events in quadrant C | 11,664,900 | 3,174,504 |
Events in quadrant D | 22,992,868 | 2,881,720 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 806 | 0 |
B | 0 | 806 | 0 |
C | 0 | 806 | 0 |
D | 0 | 806 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 82718 | 0 |
B | 0 | 94408 | 0 |
C | 0 | 92560 | 0 |
D | 0 | 127961 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 55 | 0 |
B | 0 | 55 | 0 |
C | 0 | 55 | 0 |
D | 0 | 55 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 39426 | 815 | 2.067164% |
B | 39426 | 1798 | 4.560442% |
C | 39426 | 655 | 1.661340% |
D | 39426 | 6067 | 15.388322% |
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 | 56148 | 39424 | 23 | 23 | 0.04% | 0.06% | ![](noisytime.Q0.png) |
B | 56148 | 39421 | 75 | 75 | 0.13% | 0.19% | ![](noisytime.Q1.png) |
C | 56148 | 39424 | 2 | 2 | 0.00% | 0.01% | ![](noisytime.Q2.png) |
D | 56148 | 39422 | 4246 | 4246 | 7.56% | 10.77% | ![](noisytime.Q3.png) |
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 | 8 | 15 | 278897 | 594.91 | 2122 | 2084 | 465.3 |
A | 12 | 189 | 117410 | 247.85 | 2122 | 2084 | 465.3 |
A | 15 | 69 | 78045 | 163.25 | 2122 | 2084 | 465.3 |
B | 10 | 245 | 2054370 | 5172.73 | 2089 | 2042 | 396.8 |
B | 0 | 229 | 397572 | 996.9 | 2089 | 2042 | 396.8 |
B | 0 | 189 | 298172 | 746.37 | 2089 | 2042 | 396.8 |
C | 3 | 233 | 3635201 | 8159.78 | 2036 | 2014 | 445.3 |
C | 3 | 232 | 23702 | 48.71 | 2036 | 2014 | 445.3 |
C | 14 | 234 | 18921 | 37.97 | 2036 | 2014 | 445.3 |
D | 1 | 52 | 11099616 | 23691.25 | 1894 | 1841 | 468.4 |
D | 12 | 110 | 2681016 | 5719.43 | 1894 | 1841 | 468.4 |
D | 2 | 120 | 753410 | 1604.43 | 1894 | 1841 | 468.4 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
![](dph.Q0.png) |
![](dph.Q1.png) |
Quadrant B |
Quadrant D |
![](dph.Q3.png) |
![](dph.Q2.png) |
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. |
![](countrate_histogram.png) |
![](imageFULL_DPI.png) |
Quadrant-wise count rates
Data is divided into 100 sec bins |
![](countrate_lightcurve.png) |
![](imageFULL_DPI.png) |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
![](countrate_modulerates.Q0.png) |
![](imageQ0.png) |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
![](countrate_modulerates.Q1.png) |
![](imageQ1.png) |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
![](countrate_modulerates.Q2.png) |
![](imageQ2.png) |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
![](countrate_modulerates.Q3.png) |
![](imageQ3.png) |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor | ![](hkCZTHV_Monitor.png) |
D_VDD | ![](hkDVDD.png) |
Temperature 1 | ![](hkTemperature1.png) |
Veto HV Monitor | ![](hkVetoHV_Monitor.png) |
Veto LLD | ![](hkVetoLLD.png) |
Alpha Counter | ![](hk_AlphaCounter.png) |
_CPM_Rate | ![](hk_CPM_Rate.png) |
CZT Counter | ![](hk_CZT_Counter.png) |
+2.5 Volts monitor | ![](hk_POS_2DOT5V_Monitor.png) |
+5 Volts monitor | ![](hk_POS_5V_Monitor.png) |
_ROLL_ROT | ![](hk_ROLL_ROT.png) |
_Roll_DEC | ![](hk_Roll_DEC.png) |
_Roll_RA | ![](hk_Roll_RA.png) |
Veto Counter | ![](hk_VetoCounter.png) |