ASTROSAT CZTI

Data Quality Report

Orbit 40901

Creation date: 2024-06-27T22:21:58.771122
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/AS1A12_102T01_9000005576_40901cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40901cztM0_level2_quad_clean.evt
Size (bytes)345,548,16094,530,240
Size329.5 MB 90.2 MB
Events in quadrant A3,099,860628,138
Events in quadrant B3,030,746640,780
Events in quadrant C2,686,710619,175
Events in quadrant D3,511,646559,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127103
B0132182
C0119872
D01469512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593440.067408%
B5934931.567240%
C593480.134816%
D59301151.939292%

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 7247 5935 3 3 0.04% 0.05%
B 7247 5935 58 58 0.80% 0.98%
C 7247 5935 3 3 0.04% 0.05%
D 7247 5933 112 112 1.55% 1.89%

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 10 83 557231 4285.19 631 618 129.9
A 2 79 70024 534.34 631 618 129.9
A 12 189 15252 112.66 631 618 129.9
B 4 171 249423 2018.2 627 609 123.3
B 5 255 213207 1724.44 627 609 123.3
B 0 190 47078 376.92 627 609 123.3
C 15 214 251267 1733.18 617 620 144.6
C 3 233 11832 77.53 617 620 144.6
C 0 10 11041 72.06 617 620 144.6
D 12 128 376215 2525.95 610 593 148.7
D 12 233 267264 1793.28 610 593 148.7
D 12 79 109928 735.25 610 593 148.7

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