ASTROSAT CZTI

Data Quality Report

Orbit 53185

Creation date: 2025-07-29T13:46:42.126494
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/AS1C09_011T06_9000006490_53185cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53185cztM0_level2_quad_clean.evt
Size (bytes)1,003,570,56083,678,400
Size957.1 MB 79.8 MB
Events in quadrant A5,839,308660,750
Events in quadrant B5,917,610648,487
Events in quadrant C6,545,959602,004
Events in quadrant D18,276,591109,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224630
B0229530
C0246450
D0594000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73642833.843020%
B736599913.564155%
C73656378.649016%
D7365629285.431093%

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 7364 7364 252 252 3.42% 3.42%
B 7365 7365 764 764 10.37% 10.37%
C 7365 7365 567 567 7.70% 7.70%
D 7365 7365 6392 6392 86.79% 86.79%

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 80 1748510 9564.53 737 719 182.7
A 0 8 274340 1497.35 737 719 182.7
A 7 206 267313 1458.9 737 719 182.7
B 2 249 2724923 18335.05 696 672 148.6
B 10 247 92462 617.77 696 672 148.6
B 10 28 70979 473.19 696 672 148.6
C 15 224 1819070 9747.53 687 683 186.5
C 4 5 795763 4262.06 687 683 186.5
C 10 22 220316 1177.35 687 683 186.5
D 15 125 15425193 138579.58 383 364 111.3
D 3 12 570802 5124.92 383 364 111.3
D 1 0 139359 1248.76 383 364 111.3

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