ASTROSAT CZTI

Data Quality Report

Orbit 47760

Creation date: 2024-07-28T06:51:49.683341
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/AS1C09_004T04_9000006346_47760cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47760cztM0_level2_quad_clean.evt
Size (bytes)496,578,240110,105,280
Size473.6 MB 105.0 MB
Events in quadrant A7,140,514717,488
Events in quadrant B3,600,339740,798
Events in quadrant C3,091,893724,732
Events in quadrant D4,004,827661,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257042
B0156982
C0144932
D0170742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70132493.550549%
B70141001.425720%
C7014220.313658%
D70141552.209866%

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 7893 7014 114 114 1.44% 1.63%
B 7894 7015 52 52 0.66% 0.74%
C 7894 7015 12 12 0.15% 0.17%
D 7894 7015 126 126 1.60% 1.80%

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 4188984 26760.2 746 728 156.5
A 7 3 23837 147.65 746 728 156.5
A 13 248 20062 123.53 746 728 156.5
B 0 200 265590 1787.02 748 723 148.2
B 5 32 204835 1377.11 748 723 148.2
B 0 186 67082 447.71 748 723 148.2
C 12 2 95407 537.01 745 747 176.3
C 14 254 86667 487.43 745 747 176.3
C 13 61 5002 24.14 745 747 176.3
D 2 165 695532 3710.8 737 713 187.2
D 7 67 122194 648.79 737 713 187.2
D 12 128 92430 489.83 737 713 187.2

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