ASTROSAT CZTI

Data Quality Report

Orbit 36904

Creation date: 2024-06-27T21:33:04.063562
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/AS1C07_010T01_9000005246_36904cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36904cztM0_level2_quad_clean.evt
Size (bytes)413,544,96047,332,800
Size394.4 MB 45.1 MB
Events in quadrant A3,235,826350,946
Events in quadrant B884,4425,361
Events in quadrant C2,860,620343,897
Events in quadrant D5,138,374320,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0191
C0192
D0192

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013485194
B0596833
C012233197
D019324112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5851701.196377%
B58895889100.000000%
C5847150.256542%
D585970111.964499%

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 7240 5883 37 37 0.51% 0.63%
B 7239 5888 0 0 0.00% 0.00%
C 7240 5880 12 12 0.17% 0.20%
D 7240 5889 668 668 9.23% 11.34%

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 15 223 340636 2543.37 658 644 133.7
A 10 83 218163 1627.19 658 644 133.7
A 7 16 102383 761.08 658 644 133.7
B 12 243 817561 197439.75 12 12 4.1
B 12 144 15658 3778.54 12 12 4.1
B 0 189 808 192.24 12 12 4.1
C 15 214 247765 1636.45 643 646 151.0
C 0 10 99777 656.45 643 646 151.0
C 13 61 4277 24.04 643 646 151.0
D 10 253 1035673 6774.65 617 600 152.8
D 13 249 653555 4273.65 617 600 152.8
D 12 233 597622 3907.57 617 600 152.8

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