ASTROSAT CZTI

Data Quality Report

Orbit 51031

Creation date: 2025-03-06T08:33:01.756013
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/AS1C07_001T02_9000006452_51031cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51031cztM0_level2_quad_clean.evt
Size (bytes)577,589,76086,984,640
Size550.8 MB 83.0 MB
Events in quadrant A5,047,038598,116
Events in quadrant B4,891,758627,056
Events in quadrant C7,204,771425,836
Events in quadrant D3,750,615545,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193211
B0188981
C0259017
D0156271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62682554.068283%
B62685038.024888%
C6265185629.624900%
D62681572.504786%

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 7388 6269 168 168 2.27% 2.68%
B 7388 6269 324 324 4.39% 5.17%
C 7388 6267 1759 1759 23.81% 28.07%
D 7388 6269 112 112 1.52% 1.79%

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 3 1172086 7107.69 661 646 164.8
A 12 80 335936 2034.36 661 646 164.8
A 3 110 170217 1028.87 661 646 164.8
B 12 32 895905 6482.55 643 620 138.1
B 4 81 797782 5772.06 643 620 138.1
B 1 223 126962 914.81 643 620 138.1
C 9 38 4112110 26295.95 564 560 156.4
C 6 13 274813 1754.02 564 560 156.4
C 14 96 174984 1115.55 564 560 156.4
D 9 1 243730 1358.94 637 615 178.9
D 2 216 230764 1286.46 637 615 178.9
D 10 181 115808 643.89 637 615 178.9

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