ASTROSAT CZTI

Data Quality Report

Orbit 48136

Creation date: 2024-08-23T15:55:10.670905
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/AS1T05_221T01_9000006404_48136cztM0_level2.fits modeM0/AS1T05_221T01_9000006404_48136cztM0_level2_quad_clean.evt
Size (bytes)912,274,560192,934,080
Size870.0 MB 184.0 MB
Events in quadrant A15,476,2451,643,263
Events in quadrant B2,691,107127
Events in quadrant C7,129,0931,623,629
Events in quadrant D7,216,6291,472,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058339122
B0167692
C03327033
D03375343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159494582.871653%
B159891598899.993746%
C159721550.970448%
D159691911.196067%

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 16444 15986 1 1 0.01% 0.01%
B 16445 15955 0 0 0.00% 0.00%
C 16445 15989 39 39 0.24% 0.24%
D 16445 15989 62 62 0.38% 0.39%

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 8545825 23307.7 1761 1722 366.6
A 0 31 115687 310.89 1761 1722 366.6
A 13 254 28392 72.75 1761 1722 366.6
B 2 177 2212200 90443.25 111 108 24.5
B 0 200 18445 749.72 111 108 24.5
B 4 21 14548 590.39 111 108 24.5
C 12 2 250610 613.87 1736 1744 405.4
C 10 187 41524 98.12 1736 1744 405.4
C 12 249 37693 88.67 1736 1744 405.4
D 6 239 201337 457.91 1735 1677 436.0
D 2 37 113976 257.55 1735 1677 436.0
D 2 234 80484 180.74 1735 1677 436.0

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