ASTROSAT CZTI

Data Quality Report

Orbit 06832

Creation date: 2024-06-27T15:12:09.005641
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/AS1A02_174T04_9000000938_06832cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06832cztM0_level2_quad_clean.evt
Size (bytes)521,136,00066,879,360
Size497.0 MB 63.8 MB
Events in quadrant A3,142,585398,552
Events in quadrant B3,535,332405,845
Events in quadrant C3,518,967402,398
Events in quadrant D5,164,688384,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133433
B0146042
C0143172
D0197812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6203370.596486%
B62031832.950185%
C6203701.128486%
D62044517.269504%

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 7553 6204 6 6 0.08% 0.10%
B 7553 6204 95 95 1.26% 1.53%
C 7553 6204 29 29 0.38% 0.47%
D 7554 6205 349 349 4.62% 5.62%

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 8 15 46916 287.05 794 778 160.7
A 15 239 22241 133.53 794 778 160.7
A 13 248 10826 62.51 794 778 160.7
B 0 228 262128 1753.08 795 780 149.1
B 0 219 111077 739.86 795 780 149.1
B 0 214 48902 322.79 795 780 149.1
C 9 68 214602 1187.04 781 785 180.1
C 12 16 155687 859.96 781 785 180.1
C 9 247 67542 370.61 781 785 180.1
D 2 33 773731 4142.28 761 738 186.6
D 8 195 715152 3828.37 761 738 186.6
D 2 216 528684 2829.13 761 738 186.6

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