ASTROSAT CZTI

Data Quality Report

Orbit 56788

Creation date: 2026-03-30T22:43:57.770586
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_9000006562_56788cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56788cztM0_level2_quad_clean.evt
Size (bytes)512,550,720118,166,400
Size488.8 MB 112.7 MB
Events in quadrant A4,838,807763,643
Events in quadrant B4,621,928824,890
Events in quadrant C4,802,199721,281
Events in quadrant D4,067,645693,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199161
B0197621
C0202681
D0184251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82701892.285369%
B82712212.671986%
C82712042.466449%
D8271640.773788%

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 8285 8271 132 132 1.59% 1.60%
B 8286 8272 124 124 1.50% 1.50%
C 8286 8272 169 169 2.04% 2.04%
D 8286 8272 52 52 0.63% 0.63%

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 3 14 712811 3252.75 887 865 218.9
A 10 251 595144 2715.15 887 865 218.9
A 7 64 25843 114.12 887 865 218.9
B 8 128 339450 1771.56 883 850 191.1
B 10 247 187061 974.26 883 850 191.1
B 5 185 178506 929.5 883 850 191.1
C 15 230 477349 2065.33 851 844 230.7
C 14 96 276951 1196.74 851 844 230.7
C 13 3 272741 1178.49 851 844 230.7
D 2 249 469191 1938.36 859 820 241.6
D 5 173 67894 277.59 859 820 241.6
D 2 31 57922 236.32 859 820 241.6

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