ASTROSAT CZTI

Data Quality Report

Orbit 38177

Creation date: 2024-06-27T21:49:23.301776
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/AS1A07_145T01_9000005370_38177cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38177cztM0_level2_quad_clean.evt
Size (bytes)493,018,56091,679,040
Size470.2 MB 87.4 MB
Events in quadrant A3,024,623659,407
Events in quadrant B2,727,237674,720
Events in quadrant C2,931,394640,906
Events in quadrant D9,117,570396,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124443
B0119562
C0121862
D0310862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775200.346320%
B5775310.536797%
C5775190.329004%
D5775214037.056277%

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 7146 5775 8 8 0.11% 0.14%
B 7146 5774 15 15 0.21% 0.26%
C 7146 5774 12 12 0.17% 0.21%
D 7146 5774 2285 2285 31.98% 39.57%

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 388487 2915.04 650 638 133.1
A 12 189 55762 414.31 650 638 133.1
A 10 255 30969 227.97 650 638 133.1
B 15 85 59687 469.09 646 629 125.9
B 4 171 50592 396.85 646 629 125.9
B 0 229 21539 166.08 646 629 125.9
C 15 214 243234 1636.79 631 634 148.2
C 14 254 175431 1179.33 631 634 148.2
C 3 233 40302 267.63 631 634 148.2
D 12 227 6555836 48366.49 547 532 135.5
D 12 235 139339 1024.15 547 532 135.5
D 7 55 97956 718.82 547 532 135.5

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