ASTROSAT CZTI

Data Quality Report

Orbit 54637

Creation date: 2025-11-03T12:12:18.717096
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_54637cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54637cztM0_level2_quad_clean.evt
Size (bytes)746,173,440110,937,600
Size711.6 MB 105.8 MB
Events in quadrant A7,440,038683,678
Events in quadrant B3,657,377835,490
Events in quadrant C10,194,554588,422
Events in quadrant D5,689,197677,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280300
B0171800
C0361420
D0226760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8256122714.861919%
B8256430.520833%
C8256186822.625969%
D82573334.032942%

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 8256 8256 944 944 11.43% 11.43%
B 8256 8256 20 20 0.24% 0.24%
C 8256 8256 1710 1710 20.71% 20.71%
D 8257 8257 342 342 4.14% 4.14%

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 7 190 3582023 17245.84 833 810 207.7
A 11 3 487018 2341.4 833 810 207.7
A 3 62 28866 135.11 833 810 207.7
B 10 247 129326 674.57 880 846 190.5
B 12 111 23195 117.34 880 846 190.5
B 11 111 21810 110.07 880 846 190.5
C 9 38 6530263 29830.12 790 781 218.9
C 6 223 223343 1016.78 790 781 218.9
C 13 3 97694 442.75 790 781 218.9
D 3 12 643963 2697.13 842 809 238.5
D 8 160 402932 1686.34 842 809 238.5
D 8 240 395889 1656.81 842 809 238.5

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