ASTROSAT CZTI

Data Quality Report

Orbit 35097

Creation date: 2022-03-31T12:16:52.431454
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_015T01_9000005026_35097cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35097cztM0_level2_quad_clean.evt
Size (bytes)571,248,00068,310,720
Size544.8 MB 65.1 MB
Events in quadrant A2,567,049433,493
Events in quadrant B2,947,187442,880
Events in quadrant C3,166,591433,799
Events in quadrant D8,249,477375,078

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110992
B0121425
C0126081
D0283261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546880.146306%
B5466360.658617%
C5468831.517922%
D5468112420.555962%

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 7021 5469 1 1 0.01% 0.02%
B 7021 5468 13 13 0.19% 0.24%
C 7021 5469 76 76 1.08% 1.39%
D 7021 5469 1014 1014 14.44% 18.54%

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 10 83 59814 452.05 644 630 130.9
A 7 16 11529 83.24 644 630 130.9
A 13 254 9047 64.29 644 630 130.9
B 5 172 246056 1976.02 638 620 124.2
B 5 255 89160 712.84 638 620 124.2
B 0 245 73503 586.79 638 620 124.2
C 0 10 265178 1846.02 619 625 143.3
C 15 214 227272 1581.52 619 625 143.3
C 10 49 213580 1485.98 619 625 143.3
D 8 195 3188910 22176.03 582 564 143.8
D 7 80 1635282 11370.02 582 564 143.8
D 2 249 486651 3380.9 582 564 143.8

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