ASTROSAT CZTI

Data Quality Report

Orbit 31528

Creation date: 2024-06-27T20:29:37.254850
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_056T01_9000004598_31528cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31528cztM0_level2_quad_clean.evt
Size (bytes)580,685,76084,977,280
Size553.8 MB 81.0 MB
Events in quadrant A3,904,819552,876
Events in quadrant B4,716,409573,175
Events in quadrant C5,443,350498,384
Events in quadrant D3,125,565539,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153881
B0183321
C0200341
D0131021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58572704.609869%
B58571372.339081%
C585780713.778385%
D5857310.529281%

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 7172 5858 229 229 3.19% 3.91%
B 7172 5858 12 12 0.17% 0.20%
C 7172 5858 677 677 9.44% 11.56%
D 7172 5858 16 16 0.22% 0.27%

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 1155540 8132.16 713 699 142.0
A 13 254 9510 62.05 713 699 142.0
A 3 137 6758 42.67 713 699 142.0
B 6 159 1574427 11531.84 722 704 136.5
B 4 80 183834 1341.93 722 704 136.5
B 0 190 51581 372.81 722 704 136.5
C 10 22 1874056 12256.64 661 666 152.8
C 3 233 813048 5315.0 661 666 152.8
C 14 238 107984 702.13 661 666 152.8
D 8 195 344662 2096.67 697 679 164.1
D 2 250 84838 512.97 697 679 164.1
D 12 233 43007 258.0 697 679 164.1

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