ASTROSAT CZTI

Data Quality Report

Orbit 49844

Creation date: 2024-12-15T17:25:54.291690
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/AS1A13_037T01_9000006440_49844cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49844cztM0_level2_quad_clean.evt
Size (bytes)1,232,660,16051,295,680
Size1.1 GB 48.9 MB
Events in quadrant A12,173,281348,136
Events in quadrant B4,078,442710,510
Events in quadrant C13,379,1566,813
Events in quadrant D15,457,380600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410090
B0170300
C0445450
D0507230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6986344349.284283%
B69871311.874911%
C6987692299.069701%
D6987698399.942751%

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 6985 6985 3073 3073 43.99% 43.99%
B 6987 6987 71 71 1.02% 1.02%
C 6986 6986 2954 2954 42.28% 42.28%
D 6986 6986 5439 5439 77.86% 77.86%

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 0 98 3707732 26241.17 558 544 141.3
A 3 84 2952248 20893.51 558 544 141.3
A 3 99 1182005 8362.92 558 544 141.3
B 0 229 375578 2374.49 749 725 157.9
B 4 206 226646 1431.08 749 725 157.9
B 10 44 145642 917.97 749 725 157.9
C 15 230 2452252 60877.72 126 124 40.3
C 15 197 1781715 44230.64 126 124 40.3
C 15 174 1712516 42512.67 126 124 40.3
D 8 129 4869548 87703.62 164 156 55.5
D 7 126 2128361 38331.54 164 156 55.5
D 7 61 2100845 37835.94 164 156 55.5

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