ASTROSAT CZTI

Data Quality Report

Orbit 56124

Creation date: 2026-02-11T14:12:25.197839
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_083T03_9000006548_56124cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56124cztM0_level2_quad_clean.evt
Size (bytes)577,857,60095,028,480
Size551.1 MB 90.6 MB
Events in quadrant A6,584,150566,990
Events in quadrant B3,717,617696,060
Events in quadrant C5,671,621584,075
Events in quadrant D4,874,588542,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244864
B0158992
C0217212
D0196552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6988110215.769891%
B69882123.033772%
C69886098.714940%
D69886409.158558%

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 7813 6989 876 876 11.21% 12.53%
B 7813 6989 43 43 0.55% 0.62%
C 7813 6988 310 310 3.97% 4.44%
D 7813 6989 481 481 6.16% 6.88%

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 12 115 3470971 19523.08 715 695 177.8
A 8 253 99905 558.14 715 695 177.8
A 0 8 68567 381.83 715 695 177.8
B 9 254 259615 1628.64 742 714 159.0
B 4 156 231032 1448.83 742 714 159.0
B 0 199 86603 540.29 742 714 159.0
C 9 38 2088421 10662.14 718 710 195.8
C 12 254 285496 1454.43 718 710 195.8
C 12 249 141407 718.55 718 710 195.8
D 8 240 1409619 7073.85 709 676 199.2
D 2 252 216571 1083.94 709 676 199.2
D 8 160 152240 760.95 709 676 199.2

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