ASTROSAT CZTI

Data Quality Report

Orbit 31785

Creation date: 2024-06-27T20:32:40.182912
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/AS1A10_109T01_9000004638_31785cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31785cztM0_level2_quad_clean.evt
Size (bytes)639,469,440111,902,400
Size609.8 MB 106.7 MB
Events in quadrant A4,232,997747,330
Events in quadrant B5,707,895746,989
Events in quadrant C4,106,408717,338
Events in quadrant D4,848,770692,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171092
B0217632
C0165352
D0189542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69572233.205405%
B69572052.946672%
C69582683.851682%
D69582313.319920%

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 9227 6959 60 60 0.65% 0.86%
B 9227 6959 1 1 0.01% 0.01%
C 9228 6960 23 23 0.25% 0.33%
D 9228 6960 122 122 1.32% 1.75%

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 0 13 402476 2050.76 992 979 195.8
A 13 254 12932 61.05 992 979 195.8
A 3 137 9359 42.8 992 979 195.8
B 6 159 1804365 9808.28 968 949 183.9
B 0 229 52723 281.58 968 949 183.9
B 0 190 32234 170.15 968 949 183.9
C 0 10 233544 1059.51 937 946 219.5
C 14 238 155417 703.63 937 946 219.5
C 3 233 24306 106.41 937 946 219.5
D 12 218 588127 2574.81 956 935 228.1
D 8 195 516463 2260.57 956 935 228.1
D 7 223 61713 266.51 956 935 228.1

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