ASTROSAT CZTI

Data Quality Report

Orbit 04879

Creation date: 2024-06-27T14:48:21.387819
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/AS1G05_237T01_9000000620_04879cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04879cztM0_level2_quad_clean.evt
Size (bytes)496,494,72064,681,920
Size473.5 MB 61.7 MB
Events in quadrant A3,299,321381,455
Events in quadrant B3,760,144379,932
Events in quadrant C3,314,905377,097
Events in quadrant D4,212,238357,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139543
B0152962
C0141142
D0168832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66191281.933827%
B66191542.326635%
C66191111.676990%
D66192633.973410%

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 7744 6619 0 0 0.00% 0.00%
B 7744 6619 14 14 0.18% 0.21%
C 7744 6619 8 8 0.10% 0.12%
D 7744 6619 123 123 1.59% 1.86%

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 8 15 32180 180.78 844 829 173.4
A 0 50 11537 61.75 844 829 173.4
A 12 194 8606 44.84 844 829 173.4
B 4 80 233748 1431.63 848 829 162.7
B 15 204 118415 722.74 848 829 162.7
B 10 16 31919 191.09 848 829 162.7
C 9 247 114754 600.53 817 822 189.7
C 13 61 6767 31.34 817 822 189.7
C 12 4 3511 14.17 817 822 189.7
D 13 235 429581 2123.63 816 793 201.9
D 2 136 131984 649.74 816 793 201.9
D 2 234 125304 616.66 816 793 201.9

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