ASTROSAT CZTI

Data Quality Report

Orbit 36132

Creation date: 2022-08-10T18:15:39.673878
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/AS1T04_069T01_9000005158_36132cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36132cztM0_level2_quad_clean.evt
Size (bytes)446,382,72046,883,520
Size425.7 MB 44.7 MB
Events in quadrant A2,722,710269,918
Events in quadrant B3,258,436266,798
Events in quadrant C3,033,949267,830
Events in quadrant D4,146,703246,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112603
B0129822
C0119592
D0158022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5254280.532927%
B52541783.387895%
C5254681.294252%
D52544047.689380%

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 9501 5256 9 9 0.09% 0.17%
B 9501 5256 103 103 1.08% 1.96%
C 9501 5256 56 56 0.59% 1.07%
D 9501 5256 336 336 3.54% 6.39%

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 167183 1318.35 631 619 126.3
A 9 143 70123 550.12 631 619 126.3
A 15 223 29852 231.38 631 619 126.3
B 5 172 668410 5593.52 624 608 119.4
B 4 232 92014 765.62 624 608 119.4
B 0 229 21517 175.13 624 608 119.4
C 0 207 261707 1840.01 614 619 141.9
C 15 214 222615 1564.51 614 619 141.9
C 0 10 131302 920.98 614 619 141.9
D 12 17 1032675 7073.6 593 577 145.9
D 13 249 231058 1579.63 593 577 145.9
D 2 250 217194 1484.61 593 577 145.9

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