ASTROSAT CZTI

Data Quality Report

Orbit 50517

Creation date: 2025-01-30T01:52:22.179135
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/AS1T05_239T01_9000006444_50517cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50517cztM0_level2_quad_clean.evt
Size (bytes)694,563,84089,513,280
Size662.4 MB 85.4 MB
Events in quadrant A6,694,882544,864
Events in quadrant B3,959,382675,984
Events in quadrant C7,528,011521,436
Events in quadrant D7,007,134498,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243621
B0163181
C0271071
D0254061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6732111116.503268%
B67331822.703104%
C6733110716.441408%
D673393413.871974%

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 7547 6733 1038 1038 13.75% 15.42%
B 7548 6734 106 106 1.40% 1.57%
C 7548 6734 968 968 12.82% 14.37%
D 7548 6734 920 920 12.19% 13.66%

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 4 249 1678425 10198.48 667 648 164.5
A 10 253 1098463 6673.14 667 648 164.5
A 12 250 415307 2520.53 667 648 164.5
B 12 18 475348 3133.93 712 687 151.5
B 7 0 172082 1131.63 712 687 151.5
B 4 206 107417 704.68 712 687 151.5
C 12 249 1127163 6136.26 666 664 183.6
C 15 196 979618 5332.55 666 664 183.6
C 1 44 668303 3636.76 666 664 183.6
D 7 61 2655585 14382.39 660 637 184.6
D 15 184 562125 3041.69 660 637 184.6
D 6 42 340675 1842.05 660 637 184.6

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