ASTROSAT CZTI

Data Quality Report

Orbit 58532

Creation date: 2026-07-23T12:48:17.948373
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_58532cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58532cztM0_level2_quad_clean.evt
Size (bytes)689,670,720118,232,640
Size657.7 MB 112.8 MB
Events in quadrant A4,541,992806,041
Events in quadrant B4,597,164863,006
Events in quadrant C7,219,813706,693
Events in quadrant D8,498,983603,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194630
B0194960
C0275020
D0313010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86502212.554913%
B86513343.860825%
C8651107912.472547%
D8651170119.662467%

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 8651 8651 27 27 0.31% 0.31%
B 8651 8651 11 11 0.13% 0.13%
C 8652 8652 860 860 9.94% 9.94%
D 8652 8652 1543 1543 17.83% 17.83%

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 141292 570.73 1006 979 245.8
A 10 17 138497 559.36 1006 979 245.8
A 12 114 130966 528.73 1006 979 245.8
B 0 171 251019 1158.22 992 952 215.9
B 4 171 95774 439.18 992 952 215.9
B 10 247 74524 340.76 992 952 215.9
C 5 10 2175763 8697.2 922 913 250.1
C 4 5 1005230 4016.25 922 913 250.1
C 12 252 191917 763.82 922 913 250.1
D 2 249 2371420 9762.66 858 819 242.8
D 3 12 1769004 7281.78 858 819 242.8
D 12 248 355524 1460.75 858 819 242.8

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