ASTROSAT CZTI

Data Quality Report

Orbit 08824

Creation date: 2024-06-27T15:37:39.988996
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/AS1A03_135T01_9000001226_08824cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08824cztM0_level2_quad_clean.evt
Size (bytes)695,450,88066,942,720
Size663.2 MB 63.8 MB
Events in quadrant A4,698,984359,838
Events in quadrant B4,145,468363,810
Events in quadrant C3,971,650356,111
Events in quadrant D7,653,196339,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021632
B021945
C021430
D021729

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238404284
B0224764218
C0219863921
D0336035048

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081
B091
C092
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8721580.665061%
B8728690.790559%
C8728200.229148%
D8710103811.917336%

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 25361 9005 9 9 0.04% 0.10%
B 25365 9022 27 27 0.11% 0.30%
C 25363 9020 6 6 0.02% 0.07%
D 25347 8999 1020 1020 4.02% 11.33%

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 783871 3839.21 999 978 203.9
A 13 251 23850 112.16 999 978 203.9
A 13 248 10789 48.11 999 978 203.9
B 10 16 170923 877.32 1009 983 193.7
B 0 214 26036 129.34 1009 983 193.7
B 12 111 21757 107.25 1009 983 193.7
C 9 54 160196 701.24 971 976 227.1
C 12 4 10349 41.28 971 976 227.1
C 13 61 7605 29.2 971 976 227.1
D 2 16 1996162 8998.44 894 872 221.7
D 1 52 1640942 7396.46 894 872 221.7
D 2 152 429928 1934.98 894 872 221.7

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