ASTROSAT CZTI

Data Quality Report

Orbit 35683

Creation date: 2022-09-12T17:22:16.755443
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/AS1A09_029T03_9000005108_35683cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35683cztM0_level2_quad_clean.evt
Size (bytes)83,937,60020,445,120
Size80.0 MB 19.5 MB
Events in quadrant A526,466141,346
Events in quadrant B696,923138,625
Events in quadrant C622,089132,884
Events in quadrant D626,049129,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021641
B026671
C024301
D025001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99130.302725%
B991717.164480%
C991434.339051%
D991313.128153%

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 991 991 0 0 0.00% 0.00%
B 991 991 56 56 5.65% 5.65%
C 991 991 36 36 3.63% 3.63%
D 991 991 33 33 3.33% 3.33%

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 10 83 53818 2067.02 119 117 26.0
A 13 6 5388 202.89 119 117 26.0
A 7 16 2346 85.8 119 117 26.0
B 5 255 209013 8544.44 116 113 24.4
B 5 172 15435 626.7 116 113 24.4
B 5 31 4319 172.03 116 113 24.4
C 0 10 121067 4479.56 109 110 27.0
C 15 214 44078 1628.32 109 110 27.0
C 15 208 27672 1020.74 109 110 27.0
D 10 118 133634 4582.39 110 107 29.1
D 10 199 20357 694.94 110 107 29.1
D 2 153 13425 457.05 110 107 29.1

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