ASTROSAT CZTI

Data Quality Report

Orbit 23853

Creation date: 2024-06-27T18:59:24.772782
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/AS1A07_149T01_9000003534_23853cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23853cztM0_level2_quad_clean.evt
Size (bytes)496,817,280114,984,000
Size473.8 MB 109.7 MB
Events in quadrant A3,445,182777,943
Events in quadrant B3,479,272785,579
Events in quadrant C3,539,761732,719
Events in quadrant D4,130,118722,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160761525
B0160991544
C0164461618
D0183291570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015222
C015218
D015222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262
B0251
C0251
D0252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6673871.303761%
B6662971.456019%
C66661181.770177%
D66612483.723165%

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 9922 6787 0 0 0.00% 0.00%
B 9921 6788 2 2 0.02% 0.03%
C 9921 6786 3 3 0.03% 0.04%
D 9921 6792 64 64 0.65% 0.94%

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 13 254 12211 63.8 893 876 177.7
A 0 226 8144 40.91 893 876 177.7
A 3 137 7145 35.29 893 876 177.7
B 12 111 18664 108.77 882 863 163.7
B 11 111 16332 94.52 882 863 163.7
B 14 111 14385 82.63 882 863 163.7
C 14 238 135761 709.28 831 835 190.2
C 7 247 91139 474.71 831 835 190.2
C 0 10 63548 329.67 831 835 190.2
D 1 52 624797 3076.33 844 819 202.8
D 8 195 184415 905.16 844 819 202.8
D 12 218 60967 296.54 844 819 202.8

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