ASTROSAT CZTI

Data Quality Report

Orbit 18398

Creation date: 2024-06-27T17:49:19.492400
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/AS1A05_094T01_9000002726_18398cztM0_level2.evt modeM0/AS1A05_094T01_9000002726_18398cztM0_level2_quad_clean.evt
Size (bytes)430,804,80084,415,680
Size410.8 MB 80.5 MB
Events in quadrant A3,038,843545,515
Events in quadrant B3,084,717561,246
Events in quadrant C3,005,543525,840
Events in quadrant D3,498,571493,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129062
B0129482
C0127363
D0145832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166360.583847%
B6166410.664937%
C6165350.567721%
D61651923.114355%

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 7456 6167 10 10 0.13% 0.16%
B 7456 6167 3 3 0.04% 0.05%
C 7455 6166 0 0 0.00% 0.00%
D 7455 6166 171 171 2.29% 2.77%

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 15 174 50024 323.37 763 748 152.4
A 4 2 33168 212.75 763 748 152.4
A 8 34 22198 140.76 763 748 152.4
B 3 64 49302 335.41 769 751 144.8
B 7 220 18445 122.24 769 751 144.8
B 12 111 16346 107.74 769 751 144.8
C 14 238 116050 671.64 735 742 171.7
C 8 128 11717 63.93 735 742 171.7
C 8 112 5446 27.4 735 742 171.7
D 7 238 502172 2848.42 722 700 176.1
D 1 52 122808 693.59 722 700 176.1
D 12 110 59049 331.43 722 700 176.1

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