ASTROSAT CZTI

Data Quality Report

Orbit 31510

Creation date: 2024-06-27T20:29:18.961907
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/AS1A10_119T01_9000004590_31510cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31510cztM0_level2_quad_clean.evt
Size (bytes)598,452,48092,174,400
Size570.7 MB 87.9 MB
Events in quadrant A4,657,765592,048
Events in quadrant B5,282,717616,723
Events in quadrant C3,630,697587,711
Events in quadrant D4,128,309556,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178292
B0200352
C0147952
D0162923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62765198.269598%
B62761201.912046%
C62761312.087317%
D62751492.374502%

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 7490 6275 405 405 5.41% 6.45%
B 7491 6276 24 24 0.32% 0.38%
C 7491 6277 46 46 0.61% 0.73%
D 7490 6276 117 117 1.56% 1.86%

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 1656186 10687.54 777 763 154.9
A 13 254 11813 71.34 777 763 154.9
A 3 137 7679 44.65 777 763 154.9
B 6 159 1824095 12013.5 801 785 151.8
B 5 172 146281 958.65 801 785 151.8
B 4 80 42462 274.6 801 785 151.8
C 3 233 267816 1501.24 764 769 177.9
C 14 238 124464 695.37 764 769 177.9
C 0 10 115808 646.71 764 769 177.9
D 13 249 366235 2004.6 759 738 182.3
D 8 195 297919 1629.92 759 738 182.3
D 12 79 270010 1476.85 759 738 182.3

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