ASTROSAT CZTI

Data Quality Report

Orbit 57179

Creation date: 2026-04-24T13:22:16.069257
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_070T08_9000006568_57179cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57179cztM0_level2_quad_clean.evt
Size (bytes)486,132,480101,171,520
Size463.6 MB 96.5 MB
Events in quadrant A3,156,814675,515
Events in quadrant B4,334,088687,626
Events in quadrant C5,784,165600,058
Events in quadrant D4,155,477594,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151071
B0180991
C0222461
D0176871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72551532.108890%
B72555777.953136%
C72557159.855272%
D72552833.900758%

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 7305 7256 8 8 0.11% 0.11%
B 7305 7256 223 223 3.05% 3.07%
C 7305 7256 459 459 6.28% 6.33%
D 7305 7256 152 152 2.08% 2.09%

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 39944 201.01 783 762 194.9
A 13 248 27400 136.66 783 762 194.9
A 4 3 21339 105.56 783 762 194.9
B 5 185 482069 2988.06 754 724 161.1
B 2 249 330894 2049.6 754 724 161.1
B 10 16 223363 1382.08 754 724 161.1
C 15 224 2501120 12438.89 743 734 201.0
C 14 67 151278 748.92 743 734 201.0
C 13 3 103563 511.55 743 734 201.0
D 12 33 481139 2284.36 754 720 210.3
D 2 249 213872 1013.52 754 720 210.3
D 8 240 123216 582.46 754 720 210.3

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