ASTROSAT CZTI

Data Quality Report

Orbit 20750

Creation date: 2024-06-27T18:19:08.672076
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_101T10_9000003068_20750cztM0_level2.evt modeM0/AS1A05_101T10_9000003068_20750cztM0_level2_quad_clean.evt
Size (bytes)578,041,920143,403,840
Size551.3 MB 136.8 MB
Events in quadrant A3,842,610963,600
Events in quadrant B3,896,915963,849
Events in quadrant C4,272,212930,117
Events in quadrant D4,929,515907,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172362
B0172522
C0183792
D0204682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8324440.528592%
B8324640.768861%
C83241301.561749%
D83251862.234234%

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 9434 8327 21 21 0.22% 0.25%
B 9434 8327 13 13 0.14% 0.16%
C 9434 8327 34 34 0.36% 0.41%
D 9435 8328 118 118 1.25% 1.42%

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 16 169633 872.1 956 936 193.4
A 0 226 8178 37.44 956 936 193.4
A 3 137 7991 36.47 956 936 193.4
B 3 64 42579 231.02 953 927 180.3
B 0 197 40655 220.35 953 927 180.3
B 7 220 32705 176.25 953 927 180.3
C 9 54 473334 2193.68 922 926 215.3
C 14 238 144500 666.7 922 926 215.3
C 3 233 55783 254.73 922 926 215.3
D 1 52 627158 2809.21 922 896 222.9
D 5 222 445375 1993.79 922 896 222.9
D 1 20 220970 987.18 922 896 222.9

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