ASTROSAT CZTI

Data Quality Report

Orbit 57504

Creation date: 2026-05-15T10:08:33.554448
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_113T09_9000006574_57504cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57504cztM0_level2_quad_clean.evt
Size (bytes)1,507,777,920261,342,720
Size1.4 GB 249.2 MB
Events in quadrant A9,567,2071,780,093
Events in quadrant B11,409,9671,863,601
Events in quadrant C17,642,5611,555,386
Events in quadrant D15,699,6361,382,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431654
B0471814
C0657895
D0604544

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193104872.522009%
B193117744.008078%
C19310227911.802175%
D19310251213.008804%

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 21100 19314 264 264 1.25% 1.37%
B 21101 19315 308 308 1.46% 1.59%
C 21100 19314 1843 1843 8.73% 9.54%
D 21100 19314 2122 2122 10.06% 10.99%

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 1322487 2602.51 2092 2037 507.4
A 3 128 77833 149.39 2092 2037 507.4
A 4 3 29427 53.98 2092 2037 507.4
B 4 206 2240626 5107.03 2054 1974 438.3
B 2 249 329574 747.35 2054 1974 438.3
B 0 213 102104 228.43 2054 1974 438.3
C 15 224 8531991 16287.93 1950 1933 523.7
C 8 7 305409 579.48 1950 1933 523.7
C 6 223 285197 540.89 1950 1933 523.7
D 8 240 5220708 9665.32 1911 1826 540.0
D 15 142 1147139 2121.11 1911 1826 540.0
D 2 120 1068245 1975.0 1911 1826 540.0

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