ASTROSAT CZTI

Data Quality Report

Orbit 32762

Creation date: 2024-06-27T20:41:44.042407
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/AS1A10_057T04_9000004728_32762cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32762cztM0_level2_quad_clean.evt
Size (bytes)600,603,84059,495,040
Size572.8 MB 56.7 MB
Events in quadrant A2,873,320356,696
Events in quadrant B3,048,835358,532
Events in quadrant C2,792,054356,800
Events in quadrant D9,076,911317,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122813
B0126702
C0122392
D0310932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5889120.203770%
B5889500.849041%
C5889330.560367%
D5889116819.833588%

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 7231 5890 5 5 0.07% 0.08%
B 7231 5890 26 26 0.36% 0.44%
C 7231 5890 22 22 0.30% 0.37%
D 7231 5890 1156 1156 15.99% 19.63%

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 12 16 141834 1018.93 688 675 138.5
A 0 254 28422 200.29 688 675 138.5
A 12 194 24331 170.76 688 675 138.5
B 0 219 131304 988.34 687 671 132.2
B 5 172 106856 803.37 687 671 132.2
B 0 197 57734 431.72 687 671 132.2
C 0 10 91737 579.58 667 672 157.1
C 8 35 55606 349.63 667 672 157.1
C 3 233 16064 97.96 667 672 157.1
D 8 195 4566055 29024.92 615 601 157.3
D 2 250 568419 3609.91 615 601 157.3
D 12 218 369066 2342.52 615 601 157.3

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