ASTROSAT CZTI

Data Quality Report

Orbit 19444

Creation date: 2024-06-27T18:02:59.334785
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_221T01_9000002888_19444cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19444cztM0_level2_quad_clean.evt
Size (bytes)681,943,68095,696,640
Size650.4 MB 91.3 MB
Events in quadrant A3,933,925595,341
Events in quadrant B4,067,005601,870
Events in quadrant C3,886,164585,318
Events in quadrant D8,222,607558,094

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168312
B0171972
C0166392
D0299692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8020680.847880%
B80201231.533666%
C80211561.944895%
D8021120615.035532%

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 8735 8022 0 0 0.00% 0.00%
B 8735 8022 6 6 0.07% 0.07%
C 8736 8022 0 0 0.00% 0.00%
D 8736 8022 894 894 10.23% 11.14%

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 3 1 36196 173.32 996 975 203.2
A 11 29 30833 146.93 996 975 203.2
A 5 16 14523 66.67 996 975 203.2
B 0 198 41860 212.85 993 970 192.1
B 7 220 37699 191.19 993 970 192.1
B 0 197 36998 187.54 993 970 192.1
C 14 238 148451 652.7 955 962 226.0
C 0 207 10304 41.34 955 962 226.0
C 13 61 6672 25.27 955 962 226.0
D 7 238 3564407 16021.78 912 883 222.4
D 1 52 1196533 5375.7 912 883 222.4
D 2 234 35203 154.3 912 883 222.4

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