ASTROSAT CZTI

Data Quality Report

Orbit 43677

Creation date: 2024-06-27T22:54:24.745777
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/AS1A12_018T01_9000005896_43677cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43677cztM0_level2_quad_clean.evt
Size (bytes)897,004,80092,793,600
Size855.5 MB 88.5 MB
Events in quadrant A8,947,636713,021
Events in quadrant B3,673,380725,390
Events in quadrant C11,429,544436,831
Events in quadrant D8,696,466517,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307301
B0147731
C0380341
D0300251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59375579.381843%
B59372654.463534%
C5937337756.880579%
D5937189731.952164%

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 7082 5938 93 93 1.31% 1.57%
B 7082 5938 150 150 2.12% 2.53%
C 7082 5938 3000 3000 42.36% 50.52%
D 7082 5938 1595 1595 22.52% 26.86%

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 15 222 5286495 38230.56 679 665 138.3
A 10 83 811819 5866.79 679 665 138.3
A 15 223 90032 646.36 679 665 138.3
B 5 235 291014 2232.13 680 660 130.1
B 15 54 201929 1547.28 680 660 130.1
B 5 172 177804 1361.81 680 660 130.1
C 15 142 8297523 81295.09 437 441 102.1
C 15 158 702641 6880.18 437 441 102.1
C 15 157 494267 4838.52 437 441 102.1
D 13 187 3210425 21435.68 573 552 149.7
D 1 52 458436 3057.77 573 552 149.7
D 13 249 405541 2704.54 573 552 149.7

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