ASTROSAT CZTI

Data Quality Report

Orbit 55353

Creation date: 2025-12-22T13:26:17.528799
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_009T01_9000006534_55353cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55353cztM0_level2_quad_clean.evt
Size (bytes)1,211,702,400272,640,960
Size1.1 GB 260.0 MB
Events in quadrant A9,107,5291,772,885
Events in quadrant B10,179,2981,841,302
Events in quadrant C9,546,1751,729,698
Events in quadrant D14,494,9431,554,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420443
B0444603
C0431723
D0570484

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196882901.472978%
B196897984.053025%
C196892741.391640%
D1968812216.201747%

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 21023 19691 49 49 0.23% 0.25%
B 21024 19692 246 246 1.17% 1.25%
C 21024 19692 91 91 0.43% 0.46%
D 21023 19691 965 965 4.59% 4.90%

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 3 78 278335 542.24 2089 2037 509.6
A 3 45 168221 326.14 2089 2037 509.6
A 12 3 127763 246.74 2089 2037 509.6
B 5 185 760703 1739.43 2045 1964 436.2
B 5 172 505759 1154.96 2045 1964 436.2
B 9 254 375235 855.73 2045 1964 436.2
C 13 3 322293 573.69 2048 2029 558.2
C 12 249 310392 552.38 2048 2029 558.2
C 9 38 247495 439.71 2048 2029 558.2
D 11 129 5552261 9951.09 1999 1914 557.8
D 5 38 184698 327.71 1999 1914 557.8
D 5 173 158989 281.62 1999 1914 557.8

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