ASTROSAT CZTI

Data Quality Report

Orbit 34373

Creation date: 2022-02-05T15:51:52.702969
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_082T12_9000004908_34373cztM0_level2.evt modeM0/AS1A05_082T12_9000004908_34373cztM0_level2_quad_clean.evt
Size (bytes)747,570,24075,378,240
Size712.9 MB 71.9 MB
Events in quadrant A3,076,307487,638
Events in quadrant B3,739,060494,343
Events in quadrant C4,883,872479,422
Events in quadrant D10,506,912371,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131343
B0150182
C0188392
D0357332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643260.093284%
B64321271.974502%
C64321472.285448%
D6432234036.380597%

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 9418 6434 3 3 0.03% 0.05%
B 9418 6434 83 83 0.88% 1.29%
C 9418 6434 128 128 1.36% 1.99%
D 9418 6434 2217 2217 23.54% 34.46%

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 9 143 53627 336.74 770 753 157.0
A 10 83 34003 211.76 770 753 157.0
A 13 6 14609 88.24 770 753 157.0
B 5 172 471089 3182.25 760 740 147.8
B 4 171 115679 777.64 760 740 147.8
B 4 251 87916 589.81 760 740 147.8
C 4 254 1519939 8626.56 743 749 176.1
C 15 214 268388 1519.76 743 749 176.1
C 0 10 115284 650.37 743 749 176.1
D 7 223 4604473 29552.39 627 609 155.8
D 12 235 1790710 11490.73 627 609 155.8
D 8 195 945841 6067.48 627 609 155.8

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