ASTROSAT CZTI

Data Quality Report

Orbit 18865

Creation date: 2024-06-27T17:55:50.546275
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/AS1T03_094T01_9000002816_18865cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18865cztM0_level2_quad_clean.evt
Size (bytes)625,916,16081,014,400
Size596.9 MB 77.3 MB
Events in quadrant A3,755,945495,099
Events in quadrant B4,248,666500,815
Events in quadrant C4,016,939480,036
Events in quadrant D6,419,705448,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159452
B0173772
C0166022
D0241022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75981672.197947%
B75992533.329385%
C75992092.750362%
D75995777.593104%

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 8068 7601 7 7 0.09% 0.09%
B 8069 7602 50 50 0.62% 0.66%
C 8069 7602 1 1 0.01% 0.01%
D 8069 7602 407 407 5.04% 5.35%

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 41158 203.84 961 940 197.3
A 13 254 9980 45.82 961 940 197.3
A 0 226 8489 38.26 961 940 197.3
B 7 220 193446 1040.6 952 927 185.0
B 10 245 79373 424.02 952 927 185.0
B 4 216 55447 294.69 952 927 185.0
C 3 233 286674 1323.13 914 916 216.0
C 14 238 139250 640.52 914 916 216.0
C 8 128 10286 43.39 914 916 216.0
D 12 1 1533914 6919.53 911 885 221.6
D 7 238 482091 2171.99 911 885 221.6
D 1 52 314052 1413.52 911 885 221.6

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