ASTROSAT CZTI

Data Quality Report

Orbit 57478

Creation date: 2026-05-13T15:23:50.624309
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/AS1A14_113T09_9000006574_57478cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57478cztM0_level2_quad_clean.evt
Size (bytes)449,003,52085,089,600
Size428.2 MB 81.1 MB
Events in quadrant A3,435,888555,560
Events in quadrant B3,909,216599,298
Events in quadrant C4,283,893538,015
Events in quadrant D4,526,197465,773

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144381
B0157427
C0169441
D0176551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59803355.602007%
B59793676.138150%
C59803185.317726%
D598069411.605351%

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 6965 5980 254 254 3.65% 4.25%
B 6964 5979 201 201 2.89% 3.36%
C 6965 5980 239 239 3.43% 4.00%
D 6965 5980 609 609 8.74% 10.18%

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 10 251 899844 5659.8 643 626 158.9
A 3 128 32075 197.94 643 626 158.9
A 4 3 21811 133.34 643 626 158.9
B 2 249 680516 5012.05 635 612 135.7
B 4 206 305164 2245.07 635 612 135.7
B 7 252 94127 689.36 635 612 135.7
C 15 224 1293096 7491.21 630 624 172.5
C 14 254 290915 1682.54 630 624 172.5
C 14 245 71717 412.06 630 624 172.5
D 2 249 1249928 7369.06 601 573 169.5
D 15 142 723119 4261.79 601 573 169.5
D 3 12 55569 324.38 601 573 169.5

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