ASTROSAT CZTI

Data Quality Report

Orbit 48146

Creation date: 2024-08-24T10:19:22.717804
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_009T01_9000006406_48146cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48146cztM0_level2_quad_clean.evt
Size (bytes)505,851,840107,576,640
Size482.4 MB 102.6 MB
Events in quadrant A8,491,873923,048
Events in quadrant B1,379,29452,887
Events in quadrant C3,723,168906,757
Events in quadrant D4,509,873822,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306192
B084802
C0166682
D0188822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78805887.461929%
B78807880100.000000%
C7880450.571066%
D7880941.192893%

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 7895 7881 18 18 0.23% 0.23%
B 7894 7852 1 1 0.01% 0.01%
C 7895 7879 6 6 0.08% 0.08%
D 7895 7879 64 64 0.81% 0.81%

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 4873658 25007.38 923 905 194.9
A 13 248 24788 122.57 923 905 194.9
A 3 14 16509 80.08 923 905 194.9
B 2 177 1086861 81760.96 55 54 13.3
B 0 200 35512 2667.52 55 54 13.3
B 4 21 21991 1650.33 55 54 13.3
C 12 2 68610 305.25 927 934 221.7
C 0 207 21855 94.36 927 934 221.7
C 10 187 8936 36.09 927 934 221.7
D 12 2 405689 1694.58 919 887 238.9
D 2 37 231852 966.87 919 887 238.9
D 11 192 98660 409.3 919 887 238.9

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