ASTROSAT CZTI

Data Quality Report

Orbit 54635

Creation date: 2025-11-03T07:49:46.426220
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_066T07_9000006522_54635cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54635cztM0_level2_quad_clean.evt
Size (bytes)454,417,920116,035,200
Size433.4 MB 110.7 MB
Events in quadrant A4,002,337757,782
Events in quadrant B3,687,298808,794
Events in quadrant C4,176,296724,379
Events in quadrant D4,348,199680,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176972
B0167142
C0180672
D0186192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78031772.268358%
B78031872.396514%
C78041071.371092%
D78041632.088672%

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 9462 7804 56 56 0.59% 0.72%
B 9462 7804 12 12 0.13% 0.15%
C 9464 7806 31 31 0.33% 0.40%
D 9464 7806 96 96 1.01% 1.23%

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 187729 859.86 883 858 217.3
A 13 248 92473 421.55 883 858 217.3
A 5 240 82788 376.99 883 858 217.3
B 10 247 52087 270.55 878 844 189.4
B 5 172 51807 269.07 878 844 189.4
B 0 151 37648 194.31 878 844 189.4
C 1 16 349838 1478.61 865 856 236.0
C 9 38 124429 523.57 865 856 236.0
C 6 223 85064 356.78 865 856 236.0
D 8 160 284266 1151.4 856 815 246.2
D 3 12 240120 972.08 856 815 246.2
D 6 239 118086 476.36 856 815 246.2

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