ASTROSAT CZTI

Data Quality Report

Orbit 47768

Creation date: 2024-07-28T18:57:17.164266
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_004T02_9000006348_47768cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47768cztM0_level2_quad_clean.evt
Size (bytes)559,958,400106,090,560
Size534.0 MB 101.2 MB
Events in quadrant A7,108,716728,678
Events in quadrant B4,918,230678,326
Events in quadrant C3,484,365705,180
Events in quadrant D4,683,383620,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264671
B0192132
C0154251
D0188641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68762393.475858%
B687670110.194881%
C68761271.847004%
D68765407.853403%

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 7476 6877 6 6 0.08% 0.09%
B 7476 6877 220 220 2.94% 3.20%
C 7476 6877 76 76 1.02% 1.11%
D 7476 6877 455 455 6.09% 6.62%

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 10 83 4119246 26552.61 748 732 155.1
A 13 248 39222 248.15 748 732 155.1
A 9 191 22605 141.02 748 732 155.1
B 12 18 846050 6208.09 701 680 136.2
B 0 186 334479 2451.3 701 680 136.2
B 5 32 244652 1791.64 701 680 136.2
C 12 2 550226 3213.88 728 730 171.0
C 14 254 72632 420.54 728 730 171.0
C 12 249 7744 41.02 728 730 171.0
D 2 165 1185732 6810.74 697 674 174.0
D 12 233 287945 1651.0 697 674 174.0
D 7 67 166939 955.55 697 674 174.0

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