ASTROSAT CZTI

Data Quality Report

Orbit 33933

Creation date: 2024-06-27T20:54:31.204507
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_088T01_9000004846_33933cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33933cztM0_level2_quad_clean.evt
Size (bytes)605,427,84056,681,280
Size577.4 MB 54.1 MB
Events in quadrant A6,492,345195,269
Events in quadrant B3,523,840386,929
Events in quadrant C3,138,645382,891
Events in quadrant D4,809,025366,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229253
B0140572
C0124982
D0180152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5480228041.605839%
B54802745.000000%
C54801011.843066%
D54802534.616788%

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 7272 5480 1007 1007 13.85% 18.38%
B 7272 5481 190 190 2.61% 3.47%
C 7272 5481 70 70 0.96% 1.28%
D 7272 5481 194 194 2.67% 3.54%

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 15 169 4646450 48886.38 471 462 95.0
A 10 83 12389 125.5 471 462 95.0
A 0 127 7687 76.02 471 462 95.0
B 5 172 774857 6647.86 624 611 116.5
B 15 35 49883 423.06 624 611 116.5
B 0 190 48688 412.8 624 611 116.5
C 0 10 278186 1938.18 618 621 143.2
C 15 214 237131 1651.51 618 621 143.2
C 3 233 57696 398.54 618 621 143.2
D 8 195 1390752 8104.64 615 601 171.5
D 2 250 278523 1620.3 615 601 171.5
D 12 233 196661 1143.04 615 601 171.5

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