ASTROSAT CZTI

Data Quality Report

Orbit 58604

Creation date: 2026-07-28T18:25:54.788801
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_044T04_9000006592_58604cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58604cztM0_level2_quad_clean.evt
Size (bytes)834,871,68097,721,280
Size796.2 MB 93.2 MB
Events in quadrant A5,251,915740,118
Events in quadrant B6,889,639604,084
Events in quadrant C12,760,080422,591
Events in quadrant D5,394,316646,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209786
B02592712
C043475107
D02172620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78461501.911802%
B7845204026.003824%
C7834345144.051570%
D78434205.355094%

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 7847 7847 77 77 0.98% 0.98%
B 7847 7845 812 812 10.35% 10.35%
C 7846 7835 3435 3435 43.78% 43.84%
D 7846 7844 421 421 5.37% 5.37%

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 12 114 960723 4368.16 887 863 219.7
A 3 14 561482 2551.28 887 863 219.7
A 3 94 121159 547.45 887 863 219.7
B 6 255 3179594 20332.76 725 697 156.3
B 8 234 248571 1585.44 725 697 156.3
B 0 171 180638 1150.93 725 697 156.3
C 15 217 5822757 31663.88 664 658 183.9
C 15 164 3839783 20879.34 664 658 183.9
C 1 12 163462 885.42 664 658 183.9
D 2 249 1472747 6168.26 840 802 238.6
D 8 240 170475 711.02 840 802 238.6
D 4 206 96019 399.01 840 802 238.6

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