ASTROSAT CZTI

Data Quality Report

Orbit 26274

Creation date: 2024-06-27T19:26:53.613937
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/AS1A09_079T03_9000003790_26274cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26274cztM0_level2_quad_clean.evt
Size (bytes)457,577,28098,956,800
Size436.4 MB 94.4 MB
Events in quadrant A3,413,878628,244
Events in quadrant B3,293,456653,018
Events in quadrant C3,595,281624,533
Events in quadrant D3,091,212615,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145520
B0140950
C0149920
D0139900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6826520.761793%
B6827430.629852%
C68271452.123920%
D6827100.146477%

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 7831 6827 28 28 0.36% 0.41%
B 7832 6828 0 0 0.00% 0.00%
C 7832 6828 65 65 0.83% 0.95%
D 7832 6828 2 2 0.03% 0.03%

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 210602 1261.07 830 815 166.4
A 13 254 11430 63.81 830 815 166.4
A 3 137 7482 40.08 830 815 166.4
B 12 111 18790 113.04 834 814 159.0
B 3 112 17113 102.49 834 814 159.0
B 11 111 16400 98.01 834 814 159.0
C 4 254 308421 1649.69 797 800 186.5
C 14 238 128079 682.56 797 800 186.5
C 3 233 44428 233.96 797 800 186.5
D 2 234 27608 139.42 804 785 192.4
D 1 52 23070 115.83 804 785 192.4
D 2 120 12470 60.73 804 785 192.4

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