ASTROSAT CZTI

Data Quality Report

Orbit 56559

Creation date: 2026-03-12T20:30:04.479078
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_083T06_9000006558_56559cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56559cztM0_level2_quad_clean.evt
Size (bytes)1,351,486,080266,100,480
Size1.3 GB 253.8 MB
Events in quadrant A13,155,0971,681,560
Events in quadrant B9,722,6761,918,776
Events in quadrant C12,685,0861,633,393
Events in quadrant D12,968,4751,490,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529972
B0425328
C0515802
D0520382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1933114477.485386%
B193284742.452401%
C193329935.136561%
D1933212466.445272%

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 20361 19333 907 907 4.45% 4.69%
B 20362 19332 68 68 0.33% 0.35%
C 20362 19334 652 652 3.20% 3.37%
D 20362 19334 872 872 4.28% 4.51%

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 7 64 3563598 7055.65 2048 1990 504.8
A 3 130 594043 1172.87 2048 1990 504.8
A 4 249 584142 1153.26 2048 1990 504.8
B 5 185 252564 568.7 2069 1993 440.6
B 4 21 217145 488.32 2069 1993 440.6
B 4 171 200769 451.15 2069 1993 440.6
C 12 252 1683091 3092.36 1997 1974 543.6
C 13 3 1149209 2110.3 1997 1974 543.6
C 15 230 953548 1750.39 1997 1974 543.6
D 2 249 2938749 5258.49 1976 1883 558.5
D 2 252 355099 632.44 1976 1883 558.5
D 8 240 290541 516.84 1976 1883 558.5

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