ASTROSAT CZTI

Data Quality Report

Orbit 20675

Creation date: 2024-06-27T18:18:15.038699
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_229T02_9000003060_20675cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20675cztM0_level2_quad_clean.evt
Size (bytes)593,475,840115,827,840
Size566.0 MB 110.5 MB
Events in quadrant A3,904,081756,649
Events in quadrant B4,046,443762,013
Events in quadrant C4,056,922734,102
Events in quadrant D5,431,525706,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01686043
B01736660
C01731639
D02169784

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01642
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7887600.760746%
B78831131.433464%
C7890740.937896%
D78832893.666117%

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 8691 7908 24 24 0.28% 0.30%
B 8692 7910 22 22 0.25% 0.28%
C 8692 7910 1 1 0.01% 0.01%
D 8692 7910 179 179 2.06% 2.26%

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 9 143 148366 770.1 944 923 191.5
A 5 16 117889 610.92 944 923 191.5
A 0 226 7946 36.68 944 923 191.5
B 7 220 213809 1170.39 944 922 181.9
B 3 64 43525 234.22 944 922 181.9
B 0 190 35955 192.6 944 922 181.9
C 3 233 385310 1818.67 899 903 211.4
C 14 238 138978 653.25 899 903 211.4
C 8 208 19374 87.39 899 903 211.4
D 1 52 1618771 7333.55 903 875 220.6
D 2 165 92764 416.51 903 875 220.6
D 12 227 78642 352.5 903 875 220.6

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