ASTROSAT CZTI

Data Quality Report

Orbit 45753

Creation date: 2024-06-27T23:15:47.394887
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/AS1T05_183T01_9000006124_45753cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45753cztM0_level2_quad_clean.evt
Size (bytes)654,413,760107,890,560
Size624.1 MB 102.9 MB
Events in quadrant A6,435,671739,164
Events in quadrant B8,467,069630,921
Events in quadrant C3,609,958751,910
Events in quadrant D5,174,243660,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238691
B0301031
C0157491
D0200491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69432473.557540%
B6943155322.367853%
C69441351.944124%
D69444266.134793%

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 7263 6944 11 11 0.15% 0.16%
B 7263 6944 887 887 12.21% 12.77%
C 7264 6945 88 88 1.21% 1.27%
D 7264 6945 237 237 3.26% 3.41%

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 3122988 18488.6 802 784 168.9
A 14 235 80021 469.21 802 784 168.9
A 13 248 62853 367.55 802 784 168.9
B 3 112 4988641 34247.65 740 718 145.6
B 5 172 204757 1400.95 740 718 145.6
B 0 190 111371 759.76 740 718 145.6
C 14 254 480284 2557.69 787 792 187.5
C 12 2 25096 129.64 787 792 187.5
C 3 233 11865 59.07 787 792 187.5
D 1 52 1207485 6168.66 772 748 195.6
D 1 47 474548 2422.0 772 748 195.6
D 5 171 139574 709.66 772 748 195.6

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