ASTROSAT CZTI

Data Quality Report

Orbit 20200511_A08_003T18_9000003658_level2

Creation date: 2025-01-06T13:59:55.147647
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/AS1A08_003T18_9000003658cztM0_level2.fits modeM0/AS1A08_003T18_9000003658cztM0_level2_quad_clean.evt
Size (bytes)438,465,600214,035,840
Size418.2 MB 204.1 MB
Events in quadrant A2,768,038945,010
Events in quadrant B2,663,064948,996
Events in quadrant C2,635,706862,949
Events in quadrant D2,297,122806,231

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08660
B08660
C08660
D08660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0886520
B0901580
C0985600
D01142260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424652860.673496%
B424653810.897209%
C4246410642.505652%
D4246510312.427882%

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 52015 42465 0 0 0.00% 0.00%
B 52015 42465 0 0 0.00% 0.00%
C 52015 42457 0 0 0.00% 0.00%
D 52015 42461 0 0 0.00% 0.00%

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 29 2654 11.07 720 678 178.4
A 7 110 2209 8.58 720 678 178.4
A 0 30 2098 7.96 720 678 178.4
B 2 9 2114 10.41 703 672 138.5
B 5 255 1730 7.64 703 672 138.5
B 2 8 1725 7.6 703 672 138.5
C 1 80 2074 7.95 696 653 178.6
C 1 81 2030 7.71 696 653 178.6
C 12 241 1809 6.47 696 653 178.6
D 7 3 1624 5.82 654 596 176.7
D 10 189 1602 5.69 654 596 176.7
D 6 231 1593 5.64 654 596 176.7

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