ASTROSAT CZTI

Data Quality Report

Orbit 10744

Creation date: 2024-06-27T16:03:12.704310
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/AS1A03_078T01_9000001546_10744cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10744cztM0_level2_quad_clean.evt
Size (bytes)817,560,000100,546,560
Size779.7 MB 95.9 MB
Events in quadrant A6,488,537619,884
Events in quadrant B4,624,216665,748
Events in quadrant C3,586,243670,708
Events in quadrant D9,535,422546,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247224
B0190693
C0162383
D0336713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7769105113.528125%
B77694245.457588%
C7769670.862402%
D7769226829.192946%

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 7834 7771 1019 1019 13.01% 13.11%
B 7834 7771 109 109 1.39% 1.40%
C 7834 7771 0 0 0.00% 0.00%
D 7834 7770 1903 1903 24.29% 24.49%

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 15 239 2861400 15249.1 908 888 187.6
A 15 223 39986 208.43 908 888 187.6
A 14 254 35919 186.75 908 888 187.6
B 4 239 748603 4096.34 935 913 182.5
B 3 189 81127 439.47 935 913 182.5
B 0 214 72975 394.8 935 913 182.5
C 13 61 6877 27.62 918 924 215.6
C 1 3 3772 13.21 918 924 215.6
C 8 222 2774 8.58 918 924 215.6
D 2 16 4947909 26393.33 775 753 187.4
D 12 233 760927 4055.57 775 753 187.4
D 13 249 317753 1691.21 775 753 187.4

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