ASTROSAT CZTI

Data Quality Report

Orbit 33772

Creation date: 2024-06-27T20:52:29.926786
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/AS1A11_086T01_9000004820_33772cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33772cztM0_level2_quad_clean.evt
Size (bytes)598,806,72084,631,680
Size571.1 MB 80.7 MB
Events in quadrant A6,080,322531,145
Events in quadrant B3,192,083586,160
Events in quadrant C3,394,257583,969
Events in quadrant D5,140,121520,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214623
B0124942
C0132122
D0186422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4858134027.583368%
B48581954.013998%
C48582124.363936%
D485866513.688761%

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 7011 4859 1200 1200 17.12% 24.70%
B 7011 4859 166 166 2.37% 3.42%
C 7011 4859 190 190 2.71% 3.91%
D 7011 4859 655 655 9.34% 13.48%

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 2004012 18217.45 557 550 110.0
A 15 237 1884545 17131.14 557 550 110.0
A 13 6 14091 123.13 557 550 110.0
B 5 172 585246 5106.1 605 591 114.5
B 0 229 48120 415.1 605 591 114.5
B 0 189 42251 363.84 605 591 114.5
C 9 187 479436 3518.71 599 607 136.1
C 15 214 210132 1539.71 599 607 136.1
C 0 10 145440 1064.31 599 607 136.1
D 8 195 808701 5461.63 556 545 148.0
D 2 250 701776 4739.01 556 545 148.0
D 1 47 559519 3777.62 556 545 148.0

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