ASTROSAT CZTI

Data Quality Report

Orbit 56512

Creation date: 2026-03-09T15:14:02.991935
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_060T01_9000006556_56512cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56512cztM0_level2_quad_clean.evt
Size (bytes)568,690,560107,280,000
Size542.3 MB 102.3 MB
Events in quadrant A4,302,836713,501
Events in quadrant B4,825,273766,051
Events in quadrant C7,057,026588,989
Events in quadrant D4,265,791641,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179790
B0195191
C0263970
D0180940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7729851.099754%
B77282823.649068%
C7728133017.210145%
D77281491.928054%

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 7729 7729 82 82 1.06% 1.06%
B 7728 7728 153 153 1.98% 1.98%
C 7728 7728 1249 1249 16.16% 16.16%
D 7728 7728 135 135 1.75% 1.75%

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 412409 2011.28 832 812 204.6
A 4 249 148869 723.48 832 812 204.6
A 8 206 133782 649.76 832 812 204.6
B 4 206 864039 4842.11 824 793 178.3
B 0 213 345159 1931.61 824 793 178.3
B 3 145 115990 646.16 824 793 178.3
C 15 230 2885612 14170.23 746 738 203.6
C 6 223 967610 4749.18 746 738 203.6
C 13 3 128055 625.37 746 738 203.6
D 2 249 295986 1291.37 805 770 228.6
D 5 32 238916 1041.73 805 770 228.6
D 3 12 165757 721.71 805 770 228.6

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