ASTROSAT CZTI

Data Quality Report

Orbit 33457

Creation date: 2024-06-27T20:47:25.885604
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/AS1T04_072T01_9000004780_33457cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33457cztM0_level2_quad_clean.evt
Size (bytes)531,077,76061,565,760
Size506.5 MB 58.7 MB
Events in quadrant A2,731,600375,946
Events in quadrant B4,124,473364,441
Events in quadrant C3,180,998363,455
Events in quadrant D5,644,249345,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119242
B0159831
C0127811
D0208631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594370.117786%
B59433265.485445%
C5943570.959112%
D59433606.057547%

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 7284 5944 0 0 0.00% 0.00%
B 7284 5944 237 237 3.25% 3.99%
C 7284 5944 40 40 0.55% 0.67%
D 7284 5944 283 283 3.89% 4.76%

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 13 6 14767 99.41 701 686 141.7
A 13 254 11408 75.69 701 686 141.7
A 3 137 6927 44.06 701 686 141.7
B 5 172 763679 5825.17 680 663 131.0
B 5 255 381973 2911.08 680 663 131.0
B 15 85 61333 463.18 680 663 131.0
C 15 214 257195 1635.01 672 675 156.9
C 0 10 122121 774.08 672 675 156.9
C 1 23 44189 277.35 672 675 156.9
D 8 195 1940105 11207.02 658 643 173.1
D 10 118 387171 2233.52 658 643 173.1
D 12 233 360354 2078.56 658 643 173.1

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