ASTROSAT CZTI

Data Quality Report

Orbit 48479

Creation date: 2024-09-14T18:06:55.949833
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_081T01_9000006428_48479cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48479cztM0_level2_quad_clean.evt
Size (bytes)516,257,280114,641,280
Size492.3 MB 109.3 MB
Events in quadrant A7,335,777743,780
Events in quadrant B3,356,040793,729
Events in quadrant C3,245,504762,983
Events in quadrant D4,591,161649,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277300
B0156660
C0156770
D0191710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74855116.826987%
B74862893.860540%
C74861822.431205%
D74866558.749666%

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 7485 7485 2 2 0.03% 0.03%
B 7486 7486 6 6 0.08% 0.08%
C 7486 7486 14 14 0.19% 0.19%
D 7486 7486 262 262 3.50% 3.50%

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 4170051 24410.75 814 793 170.8
A 13 254 14473 80.1 814 793 170.8
A 3 137 9743 52.4 814 793 170.8
B 0 186 53041 322.28 817 789 162.1
B 8 234 42619 258.0 817 789 162.1
B 12 111 20828 123.59 817 789 162.1
C 12 250 63512 331.59 807 809 189.1
C 3 233 16610 83.56 807 809 189.1
C 14 67 9122 43.96 807 809 189.1
D 2 249 1057272 5356.67 790 761 197.2
D 10 199 144263 727.58 790 761 197.2
D 7 38 104484 525.89 790 761 197.2

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