ASTROSAT CZTI

Data Quality Report

Orbit 54518

Creation date: 2025-10-26T11:41:35.505019
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_54518cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54518cztM0_level2_quad_clean.evt
Size (bytes)542,148,48099,365,760
Size517.0 MB 94.8 MB
Events in quadrant A3,922,975668,071
Events in quadrant B3,344,974723,589
Events in quadrant C8,707,201525,462
Events in quadrant D3,548,095602,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167742
B0152412
C0307819
D0158672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70182062.935309%
B70191001.424704%
C7018165623.596466%
D7018690.983186%

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 7993 7019 170 170 2.13% 2.42%
B 7994 7020 37 37 0.46% 0.53%
C 7992 7018 1372 1372 17.17% 19.55%
D 7993 7019 65 65 0.81% 0.93%

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 11 3 351162 1882.72 754 735 186.1
A 8 245 228893 1225.81 754 735 186.1
A 6 161 171319 916.49 754 735 186.1
B 5 185 139980 856.53 754 729 162.6
B 10 247 105856 646.63 754 729 162.6
B 10 44 22404 133.32 754 729 162.6
C 4 5 3422435 18274.77 675 669 187.2
C 9 38 1657582 8849.14 675 669 187.2
C 13 3 574414 3064.22 675 669 187.2
D 3 12 232823 1109.34 729 695 209.2
D 2 120 214782 1023.12 729 695 209.2
D 2 172 113530 539.24 729 695 209.2

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