ASTROSAT CZTI

Data Quality Report

Orbit 04062

Creation date: 2024-06-27T14:36:53.984008
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/AS1G05_241T04_9000000518_04062cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04062cztM0_level2_quad_clean.evt
Size (bytes)451,946,88067,691,520
Size431.0 MB 64.6 MB
Events in quadrant A3,756,993398,885
Events in quadrant B3,302,501400,095
Events in quadrant C2,971,616398,249
Events in quadrant D3,200,299384,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156402
B0140661
C0136321
D0144421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67042483.699284%
B6704771.148568%
C6704460.686158%
D6704971.446897%

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 7639 6704 152 152 1.99% 2.27%
B 7639 6704 6 6 0.08% 0.09%
C 7639 6704 3 3 0.04% 0.04%
D 7639 6704 46 46 0.60% 0.69%

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 50 533970 3376.39 769 752 157.9
A 0 199 180480 1138.05 769 752 157.9
A 0 226 28967 178.66 769 752 157.9
B 4 81 114591 744.97 783 765 152.8
B 15 204 69149 447.56 783 765 152.8
B 14 167 29958 191.06 783 765 152.8
C 9 144 26943 148.49 752 755 176.4
C 13 61 6225 31.02 752 755 176.4
C 10 65 3356 14.75 752 755 176.4
D 2 232 177589 968.7 751 729 182.6
D 13 239 111719 607.91 751 729 182.6
D 13 53 38760 208.3 751 729 182.6

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