ASTROSAT CZTI

Data Quality Report

Orbit 47840

Creation date: 2024-08-02T16:20:04.640990
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/AS1T05_216T01_9000006356_47840cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47840cztM0_level2_quad_clean.evt
Size (bytes)614,710,080112,152,960
Size586.2 MB 107.0 MB
Events in quadrant A7,494,238742,293
Events in quadrant B5,187,390719,545
Events in quadrant C3,331,306773,526
Events in quadrant D6,175,246652,081

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280762
B0202562
C0153542
D0233682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73036168.434890%
B7304101013.828039%
C73042403.285871%
D730486811.883899%

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 9003 7303 4 4 0.04% 0.05%
B 9004 7304 595 595 6.61% 8.15%
C 9004 7304 1 1 0.01% 0.01%
D 9004 7304 628 628 6.97% 8.60%

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 4228619 23872.74 842 821 177.1
A 3 137 10058 52.16 842 821 177.1
A 10 255 8724 44.63 842 821 177.1
B 0 186 1642616 10039.17 817 791 163.5
B 4 21 167190 1017.47 817 791 163.5
B 0 245 63597 384.03 817 791 163.5
C 14 254 20539 98.72 844 848 199.5
C 3 110 10156 46.67 844 848 199.5
C 3 233 8818 39.96 844 848 199.5
D 12 2 1333722 6372.57 825 796 209.2
D 2 37 829830 3963.52 825 796 209.2
D 2 165 322650 1538.75 825 796 209.2

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