ASTROSAT CZTI

Data Quality Report

Orbit 26579

Creation date: 2024-06-27T19:30:40.897602
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_095T02_9000003846_26579cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26579cztM0_level2_quad_clean.evt
Size (bytes)555,148,800107,933,760
Size529.4 MB 102.9 MB
Events in quadrant A3,386,798716,350
Events in quadrant B3,858,360723,582
Events in quadrant C3,865,533688,560
Events in quadrant D5,237,478662,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144710
B0159070
C0159620
D0201060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6854761.108842%
B68551311.911014%
C68551932.815463%
D68553855.616338%

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 7509 6854 19 19 0.25% 0.28%
B 7510 6855 40 40 0.53% 0.58%
C 7510 6855 65 65 0.87% 0.95%
D 7510 6856 307 307 4.09% 4.48%

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 169641 1017.94 832 815 165.9
A 13 254 11150 62.31 832 815 165.9
A 3 137 7728 41.68 832 815 165.9
B 0 189 210932 1356.34 825 806 154.9
B 5 172 206569 1328.18 825 806 154.9
B 3 112 73986 472.37 825 806 154.9
C 4 254 521453 2835.71 790 795 183.6
C 14 238 127567 690.45 790 795 183.6
C 3 233 118025 638.48 790 795 183.6
D 1 52 1013439 5304.46 788 764 190.9
D 7 80 720407 3769.54 788 764 190.9
D 2 250 312686 1633.87 788 764 190.9

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