ASTROSAT CZTI

Data Quality Report

Orbit 31068

Creation date: 2024-06-27T20:22:59.305800
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/AS1C06_002T01_9000004490_31068cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31068cztM0_level2_quad_clean.evt
Size (bytes)679,121,280138,579,840
Size647.7 MB 132.2 MB
Events in quadrant A3,840,114930,324
Events in quadrant B6,482,356920,891
Events in quadrant C4,091,909908,944
Events in quadrant D5,592,620861,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170852
B0253152
C0176032
D0223052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8284720.869145%
B82842493.005794%
C82852032.450211%
D82854054.888352%

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 8934 8288 0 0 0.00% 0.00%
B 8934 8288 4 4 0.04% 0.05%
C 8935 8289 6 6 0.07% 0.07%
D 8935 8289 266 266 2.98% 3.21%

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 13 254 15439 72.73 994 971 198.9
A 3 137 10035 45.56 994 971 198.9
A 0 226 8203 36.35 994 971 198.9
B 6 159 2431230 13086.75 988 962 185.7
B 5 172 47750 251.95 988 962 185.7
B 0 190 28039 145.81 988 962 185.7
C 14 238 153275 671.79 964 967 226.7
C 0 10 126692 554.54 964 967 226.7
C 2 114 19706 82.65 964 967 226.7
D 8 195 872307 3860.77 946 920 225.7
D 13 249 863929 3823.65 946 920 225.7
D 13 174 95228 417.84 946 920 225.7

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