ASTROSAT CZTI

Data Quality Report

Orbit 41642

Creation date: 2024-06-27T22:31:03.879311
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/AS1T05_116T01_9000005682_41642cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41642cztM0_level2_quad_clean.evt
Size (bytes)1,068,485,760243,224,640
Size1019.0 MB 232.0 MB
Events in quadrant A8,380,6801,672,853
Events in quadrant B8,597,0981,663,607
Events in quadrant C8,481,7291,626,252
Events in quadrant D12,873,2831,315,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339784
B0364964
C0347904
D0491164

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15738650.413013%
B157385343.393061%
C157383652.319227%
D15738181811.551658%

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 19887 15741 25 25 0.13% 0.16%
B 19887 15741 339 339 1.70% 2.15%
C 19887 15741 365 365 1.84% 2.32%
D 19887 15741 1519 1519 7.64% 9.65%

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 1370871 3844.59 1734 1694 356.1
A 13 248 269293 751.41 1734 1694 356.1
A 2 79 38064 102.13 1734 1694 356.1
B 0 186 1425047 4375.41 1706 1656 325.3
B 4 171 152112 462.49 1706 1656 325.3
B 0 190 130060 394.71 1706 1656 325.3
C 0 10 1203070 3084.47 1674 1684 389.5
C 15 214 630841 1615.32 1674 1684 389.5
C 14 254 118731 300.51 1674 1684 389.5
D 13 249 5194528 13303.64 1616 1572 390.3
D 2 249 560615 1432.19 1616 1572 390.3
D 1 47 353010 900.34 1616 1572 390.3

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