ASTROSAT CZTI

Data Quality Report

Orbit 20171020_A04_145T03_9000001624_level2

Creation date: 2017-10-27T12:59:47.353675
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/AS1A04_145T03_9000001624cztM0_level2.evt modeM0/AS1A04_145T03_9000001624cztM0_level2_quad_clean.evt
Size (bytes)673,940,16089,320,320
Size642.7 MB 85.2 MB
Events in quadrant A5,713,118550,186
Events in quadrant B5,286,809551,903
Events in quadrant C3,593,406553,099
Events in quadrant D5,294,162512,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220990
B0207710
C0161070
D0209210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01580
C01520
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77115427.028920%
B77145577.220638%
C77402232.881137%
D77155346.921581%

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 7927 7747 161 161 2.03% 2.08%
B 7927 7754 204 204 2.57% 2.63%
C 7927 7771 0 0 0.00% 0.00%
D 7927 7756 244 244 3.08% 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 8 5 1508363 7885.57 928 906 191.2
A 14 238 256508 1337.06 928 906 191.2
A 0 23 192588 1002.7 928 906 191.2
B 4 239 1402916 7865.96 919 897 178.2
B 15 204 110382 614.26 919 897 178.2
B 4 80 56021 309.27 919 897 178.2
C 14 67 9349 39.27 913 916 214.8
C 8 128 9094 38.08 913 916 214.8
C 13 61 6849 27.63 913 916 214.8
D 13 152 636482 2939.76 891 866 216.2
D 10 253 435094 2008.33 891 866 216.2
D 1 52 409529 1890.09 891 866 216.2

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