ASTROSAT CZTI

Data Quality Report

Orbit 39264

Creation date: 2024-06-27T22:02:28.690433
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/AS1A12_025T11_9000005454_39264cztM0_level2.fits modeM0/AS1A12_025T11_9000005454_39264cztM0_level2_quad_clean.evt
Size (bytes)576,622,08090,213,120
Size549.9 MB 86.0 MB
Events in quadrant A3,032,772659,894
Events in quadrant B4,464,774627,967
Events in quadrant C2,858,611642,814
Events in quadrant D10,531,458389,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126713
B0171082
C0120742
D0353682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5890130.220713%
B58904637.860781%
C589080.135823%
D5890246041.765705%

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 7172 5891 4 4 0.06% 0.07%
B 7172 5890 324 324 4.52% 5.50%
C 7172 5891 6 6 0.08% 0.10%
D 7172 5891 2324 2324 32.40% 39.45%

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 458589 3372.92 664 650 135.8
A 13 254 8088 54.78 664 650 135.8
A 3 137 7547 50.8 664 650 135.8
B 5 172 1256066 9982.71 635 617 125.8
B 5 255 280667 2226.82 635 617 125.8
B 0 189 214650 1701.88 635 617 125.8
C 15 214 264761 1741.98 647 650 151.6
C 3 233 27406 176.47 647 650 151.6
C 12 249 27209 175.17 647 650 151.6
D 12 235 7054857 51439.44 551 533 137.1
D 12 217 518754 3778.81 551 533 137.1
D 2 249 365767 2663.25 551 533 137.1

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