ASTROSAT CZTI

Data Quality Report

Orbit 20200202_A07_112T02_9000003480_level2

Creation date: 2020-02-04T14:41:09.423872
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_112T02_9000003480cztM0_level2_bc.evt modeM0/AS1A07_112T02_9000003480cztM0_level2_quad_clean.evt
Size (bytes)1,843,378,560735,445,440
Size1.7 GB 701.4 MB
Events in quadrant A11,391,3394,721,759
Events in quadrant B12,485,2674,787,483
Events in quadrant C11,895,9954,582,990
Events in quadrant D16,370,5494,478,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011020
B011020
C011020
D011020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01109300
B01150280
C01139070
D01269440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540103010.557304%
B540115701.055341%
C540147141.321880%
D5401211332.097682%

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 63459 54010 0 0 0.00% 0.00%
B 63459 54010 3 3 0.00% 0.01%
C 63459 54013 21 21 0.03% 0.04%
D 63459 54015 302 302 0.48% 0.56%

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 82683 125.32 2939 2895 636.7
A 4 2 32757 46.9 2939 2895 636.7
A 0 226 18902 25.14 2939 2895 636.7
B 0 189 521832 936.0 2947 2879 554.4
B 0 229 169753 300.98 2947 2879 554.4
B 0 230 133148 234.96 2947 2879 554.4
C 2 16 420910 629.95 2806 2794 663.7
C 7 247 347881 519.92 2806 2794 663.7
C 10 91 196433 291.74 2806 2794 663.7
D 1 52 4161778 6202.55 2870 2773 670.5
D 9 85 573180 850.68 2870 2773 670.5
D 2 234 224615 330.85 2870 2773 670.5

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