ASTROSAT CZTI

Data Quality Report

Orbit 20655

Creation date: 2024-06-27T18:18:02.483981
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_103T06_9000003056_20655cztM0_level2.evt modeM0/AS1A05_103T06_9000003056_20655cztM0_level2_quad_clean.evt
Size (bytes)263,808,00054,849,600
Size251.6 MB 52.3 MB
Events in quadrant A1,702,895372,578
Events in quadrant B1,789,015372,232
Events in quadrant C1,691,831349,580
Events in quadrant D2,586,324338,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070851
B073733
C070191
D099553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3202682.123673%
B3201672.093096%
C3202812.529669%
D32011574.904717%

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 4542 3203 0 0 0.00% 0.00%
B 4542 3203 0 0 0.00% 0.00%
C 4542 3203 0 0 0.00% 0.00%
D 4541 3202 88 88 1.94% 2.75%

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 0 226 3934 38.67 442 433 90.5
A 13 210 3780 36.97 442 433 90.5
A 3 137 3372 32.46 442 433 90.5
B 4 216 14387 169.14 435 426 82.5
B 0 189 13989 164.32 435 426 82.5
B 6 36 10919 127.13 435 426 82.5
C 14 238 66061 677.36 413 415 96.9
C 7 247 6354 61.28 413 415 96.9
C 3 233 3780 34.72 413 415 96.9
D 1 52 472658 4592.89 419 408 102.8
D 1 239 408829 3972.12 419 408 102.8
D 13 153 65501 633.07 419 408 102.8

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