ASTROSAT CZTI

Data Quality Report

Orbit 00686

Creation date: 2024-06-27T14:01:33.084390
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/AS1P01_147T02_9000000098_00686cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00686cztM0_level2_quad_clean.evt
Size (bytes)1,667,309,76073,321,920
Size1.6 GB 69.9 MB
Events in quadrant A8,445,560479,808
Events in quadrant B9,695,061472,746
Events in quadrant C21,132,567355,085
Events in quadrant D10,764,505425,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300751
B0339031
C0686912
D0370731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7016650.926454%
B68944566.614447%
C6976580783.242546%
D69376519.384460%

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 7331 7017 307 307 4.19% 4.38%
B 7331 6896 918 918 12.52% 13.31%
C 7331 6978 6965 6965 95.01% 99.81%
D 7331 6938 1080 1080 14.73% 15.57%

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 15 249 135622 255.1 2161 2178 523.1
A 12 189 9502 14.0 2161 2178 523.1
A 15 69 8533 12.15 2161 2178 523.1
B 5 191 1116524 2169.43 2161 2180 513.7
B 7 221 265014 511.69 2161 2180 513.7
B 5 247 36611 67.03 2161 2180 513.7
C 3 191 11515872 24026.41 1720 1784 479.2
C 3 127 962105 2003.9 1720 1784 479.2
C 3 95 505656 1051.43 1720 1784 479.2
D 0 25 1589860 2664.91 1920 1985 595.8
D 1 84 1454012 2436.92 1920 1985 595.8
D 1 4 274464 457.3 1920 1985 595.8

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