ASTROSAT CZTI

Data Quality Report

Orbit 35696

Creation date: 2022-05-10T15:04:24.910004
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/AS1A09_142T02_9000005112_35696cztM0_level2.evt modeM0/AS1A09_142T02_9000005112_35696cztM0_level2_quad_clean.evt
Size (bytes)400,694,40082,287,360
Size382.1 MB 78.5 MB
Events in quadrant A2,542,024548,280
Events in quadrant B3,616,323536,471
Events in quadrant C2,830,484539,033
Events in quadrant D2,806,976518,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106443
B0137572
C0112532
D0114722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498850.100241%
B49883627.257418%
C4988781.563753%
D4988400.801925%

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 7080 4989 0 0 0.00% 0.00%
B 7080 4989 303 303 4.28% 6.07%
C 7080 4989 61 61 0.86% 1.22%
D 7080 4989 36 36 0.51% 0.72%

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 10 83 143305 1156.71 619 608 123.4
A 3 137 6012 43.8 619 608 123.4
A 0 226 5279 37.86 619 608 123.4
B 5 172 1034595 9239.46 598 583 111.9
B 5 255 154030 1371.13 598 583 111.9
B 3 112 42134 371.28 598 583 111.9
C 0 10 237261 1698.76 605 609 139.3
C 15 214 208524 1492.48 605 609 139.3
C 1 241 14345 98.6 605 609 139.3
D 2 250 110744 749.78 608 592 146.9
D 12 6 76974 519.91 608 592 146.9
D 13 249 75868 512.38 608 592 146.9

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