ASTROSAT CZTI

Data Quality Report

Orbit 54534

Creation date: 2025-10-28T10:46:29.007448
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/AS1A14_127T09_9000006520_54534cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54534cztM0_level2_quad_clean.evt
Size (bytes)575,303,040111,150,720
Size548.7 MB 106.0 MB
Events in quadrant A3,872,495738,917
Events in quadrant B4,837,153762,073
Events in quadrant C5,237,243696,241
Events in quadrant D6,740,859623,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173532
B0202232
C0210542
D0255102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78371501.913998%
B78375356.826592%
C78372403.062396%
D78376127.809111%

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 8042 7840 22 22 0.27% 0.28%
B 8042 7840 168 168 2.09% 2.14%
C 8042 7840 148 148 1.84% 1.89%
D 8042 7839 574 574 7.14% 7.32%

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 4 249 131666 607.72 877 856 215.2
A 11 3 67275 308.57 877 856 215.2
A 13 248 63834 292.59 877 856 215.2
B 10 14 951614 5118.45 854 825 185.8
B 5 185 324363 1741.73 854 825 185.8
B 10 247 100935 538.93 854 825 185.8
C 12 252 838396 3617.3 845 837 231.5
C 4 5 464254 2001.43 845 837 231.5
C 13 3 253067 1089.35 845 837 231.5
D 2 172 2014227 8750.94 815 780 230.1
D 8 160 901935 3916.64 815 780 230.1
D 3 144 162015 700.77 815 780 230.1

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