ASTROSAT CZTI

Data Quality Report

Orbit 58216

Creation date: 2026-07-02T07:31:00.050369
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_042T02_9000006586_58216cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58216cztM0_level2_quad_clean.evt
Size (bytes)1,195,755,840266,909,760
Size1.1 GB 254.5 MB
Events in quadrant A9,088,4501,752,764
Events in quadrant B11,570,9451,837,941
Events in quadrant C8,703,9301,665,935
Events in quadrant D13,438,4171,524,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414013
B0471203
C0402283
D0533086

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188733031.605468%
B188736043.200339%
C188731250.662322%
D188728424.461636%

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 20478 18875 220 220 1.07% 1.17%
B 20478 18874 330 330 1.61% 1.75%
C 20478 18875 97 97 0.47% 0.51%
D 20477 18875 855 855 4.18% 4.53%

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 13 248 421753 845.94 2014 1964 496.2
A 8 246 386356 774.61 2014 1964 496.2
A 10 251 353179 707.75 2014 1964 496.2
B 10 128 1506636 3558.9 1974 1898 422.8
B 2 249 606971 1431.07 1974 1898 422.8
B 4 236 421958 993.5 1974 1898 422.8
C 12 252 473004 888.64 1945 1932 530.1
C 6 223 282217 528.74 1945 1932 530.1
C 14 254 94742 175.08 1945 1932 530.1
D 12 110 2010349 3689.79 1919 1832 544.3
D 2 31 832971 1526.86 1919 1832 544.3
D 3 224 619763 1135.18 1919 1832 544.3

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