ASTROSAT CZTI

Data Quality Report

Orbit 50929

Creation date: 2025-02-27T08:53:27.960431
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/AS1C07_001T01_9000006450_50929cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50929cztM0_level2_quad_clean.evt
Size (bytes)645,992,64095,224,320
Size616.1 MB 90.8 MB
Events in quadrant A9,716,293502,264
Events in quadrant B3,843,163720,555
Events in quadrant C5,140,592598,675
Events in quadrant D4,691,357592,742

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335920
B0160480
C0195640
D0185260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6724209231.112433%
B67252213.286245%
C67255878.728625%
D67242663.955979%

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 7854 6724 1925 1925 24.51% 28.63%
B 7855 6725 28 28 0.36% 0.42%
C 7855 6726 324 324 4.12% 4.82%
D 7854 6724 185 185 2.36% 2.75%

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 14 254 5153642 31800.19 645 629 162.0
A 12 3 403858 2488.4 645 629 162.0
A 4 4 377265 2324.29 645 629 162.0
B 10 254 571959 3683.18 727 702 155.1
B 10 247 111226 712.6 727 702 155.1
B 8 128 75650 483.23 727 702 155.1
C 12 252 983852 5114.3 689 679 192.2
C 12 247 486364 2526.45 689 679 192.2
C 10 171 290896 1509.66 689 679 192.2
D 6 42 471400 2375.06 707 678 198.2
D 2 62 388113 1954.83 707 678 198.2
D 2 249 271004 1363.94 707 678 198.2

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