ASTROSAT CZTI

Data Quality Report

Orbit 18126

Creation date: 2024-06-27T17:45:28.760553
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/AS1A05_097T01_9000002690_18126cztM0_level2.evt modeM0/AS1A05_097T01_9000002690_18126cztM0_level2_quad_clean.evt
Size (bytes)647,815,68092,347,200
Size617.8 MB 88.1 MB
Events in quadrant A4,050,762555,797
Events in quadrant B4,228,684572,270
Events in quadrant C4,066,766565,142
Events in quadrant D6,725,047540,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171792
B0176612
C0170432
D0257022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80881481.829871%
B80891792.212882%
C80892132.633206%
D80895907.293856%

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 8888 8091 4 4 0.05% 0.05%
B 8889 8092 7 7 0.08% 0.09%
C 8889 8092 0 0 0.00% 0.00%
D 8889 8092 314 314 3.53% 3.88%

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 15 174 71815 336.09 1034 1012 210.7
A 0 226 9221 38.97 1034 1012 210.7
A 3 137 7755 32.01 1034 1012 210.7
B 0 197 66400 329.33 1031 1005 198.6
B 3 64 31175 151.94 1031 1005 198.6
B 5 172 27195 131.89 1031 1005 198.6
C 14 238 154365 654.66 993 998 234.3
C 3 233 18732 75.7 993 998 234.3
C 5 218 7669 28.47 993 998 234.3
D 7 238 1992158 8220.68 996 966 242.2
D 10 70 500857 2063.81 996 966 242.2
D 7 38 177862 730.32 996 966 242.2

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