ASTROSAT CZTI

Data Quality Report

Orbit 08878

Creation date: 2024-06-27T15:38:20.930030
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_065T01_9000001238_08878cztM0_level2.evt modeM0/AS1A03_065T01_9000001238_08878cztM0_level2_quad_clean.evt
Size (bytes)420,382,08073,987,200
Size400.9 MB 70.6 MB
Events in quadrant A3,592,121453,563
Events in quadrant B2,813,550464,143
Events in quadrant C3,140,277456,216
Events in quadrant D2,779,314449,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149392
B0124491
C0131351
D0125881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978530.886584%
B5978290.485112%
C597870.117096%
D5978180.301104%

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 6338 5979 12 12 0.19% 0.20%
B 6338 5979 5 5 0.08% 0.08%
C 6338 5979 1 1 0.02% 0.02%
D 6338 5979 11 11 0.17% 0.18%

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 746328 5245.46 693 677 142.2
A 15 174 113165 791.32 693 677 142.2
A 5 16 30930 212.82 693 677 142.2
B 10 16 77641 569.95 697 680 135.0
B 12 111 14972 105.84 697 680 135.0
B 11 111 12344 86.38 697 680 135.0
C 9 68 487616 3086.4 677 681 157.8
C 8 128 5596 31.15 677 681 157.8
C 13 61 5059 27.75 677 681 157.8
D 8 195 76314 459.76 672 656 164.6
D 1 52 46427 278.14 672 656 164.6
D 2 234 23458 138.56 672 656 164.6

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