ASTROSAT CZTI

Data Quality Report

Orbit 46550

Creation date: 2024-06-27T23:24:36.978112
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/AS1A13_091T08_9000006228_46550cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46550cztM0_level2_quad_clean.evt
Size (bytes)661,965,120117,017,280
Size631.3 MB 111.6 MB
Events in quadrant A7,168,960768,052
Events in quadrant B4,286,034815,647
Events in quadrant C4,014,216784,110
Events in quadrant D8,438,518640,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257132
B0177522
C0174852
D0304132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76876939.015221%
B76885236.802810%
C76884666.061394%
D7688144918.847555%

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 8992 7687 30 30 0.33% 0.39%
B 8993 7688 22 22 0.24% 0.29%
C 8993 7688 138 138 1.53% 1.80%
D 8993 7688 966 966 10.74% 12.57%

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 10 83 3518071 18625.25 903 881 188.8
A 15 235 99176 520.52 903 881 188.8
A 9 191 30493 156.81 903 881 188.8
B 2 2 238008 1296.96 908 879 182.8
B 0 189 134866 732.83 908 879 182.8
B 3 112 89281 483.51 908 879 182.8
C 14 254 445491 2066.74 901 902 215.1
C 2 14 22359 99.74 901 902 215.1
C 1 241 15552 68.1 901 902 215.1
D 1 52 2132943 9867.28 857 828 216.1
D 13 249 1940620 8977.22 857 828 216.1
D 5 33 489780 2262.83 857 828 216.1

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