ASTROSAT CZTI

Data Quality Report

Orbit 21528

Creation date: 2024-06-27T18:29:01.612412
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_144T02_9000003176_21528cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21528cztM0_level2_quad_clean.evt
Size (bytes)581,970,240100,198,080
Size555.0 MB 95.6 MB
Events in quadrant A3,677,234629,548
Events in quadrant B3,741,465640,016
Events in quadrant C5,348,427616,128
Events in quadrant D4,331,501608,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159742
B0160762
C0210862
D0180252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77641501.931994%
B77641782.292633%
C77643554.572385%
D77643254.185987%

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 7914 7765 0 0 0.00% 0.00%
B 7914 7765 0 0 0.00% 0.00%
C 7914 7765 46 46 0.58% 0.59%
D 7914 7765 158 158 2.00% 2.03%

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 5 203 26654 135.38 945 922 190.1
A 13 254 13229 64.75 945 922 190.1
A 0 226 8203 38.31 945 922 190.1
B 0 230 34267 185.91 936 912 179.4
B 12 111 21939 117.2 936 912 179.4
B 11 111 19120 101.48 936 912 179.4
C 3 233 1688132 8103.62 894 898 208.2
C 14 238 140949 672.65 894 898 208.2
C 10 91 28238 131.31 894 898 208.2
D 7 38 483090 2128.11 905 882 226.6
D 14 35 192678 846.44 905 882 226.6
D 13 153 62782 273.18 905 882 226.6

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