ASTROSAT CZTI

Data Quality Report

Orbit 45055

Creation date: 2024-06-27T23:09:26.798730
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/AS1A13_020T01_9000006040_45055cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45055cztM0_level2_quad_clean.evt
Size (bytes)699,684,480112,285,440
Size667.3 MB 107.1 MB
Events in quadrant A6,333,601779,698
Events in quadrant B6,193,994706,191
Events in quadrant C3,574,720792,671
Events in quadrant D9,262,350638,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234122
B0229262
C0152302
D0324502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69234236.110068%
B6923119417.246858%
C69232002.888921%
D6922125518.130598%

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 8013 6924 103 103 1.29% 1.49%
B 8013 6924 661 661 8.25% 9.55%
C 8013 6924 96 96 1.20% 1.39%
D 8012 6923 1060 1060 13.23% 15.31%

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 2614373 15104.86 830 811 173.0
A 13 248 445191 2568.25 830 811 173.0
A 7 3 34254 193.28 830 811 173.0
B 4 171 1936785 13019.67 767 745 148.7
B 0 189 473473 3179.05 767 745 148.7
B 15 36 177298 1187.3 767 745 148.7
C 12 2 308065 1603.31 820 825 191.6
C 12 250 24573 123.92 820 825 191.6
C 14 254 21845 109.69 820 825 191.6
D 11 241 2829105 14353.9 784 761 197.0
D 13 174 1537983 7801.43 784 761 197.0
D 13 249 800861 4060.52 784 761 197.0

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