ASTROSAT CZTI

Data Quality Report

Orbit 31760

Creation date: 2024-06-27T20:32:23.827847
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/AS1A10_059T01_9000004634_31760cztM0_level2.evt modeM0/AS1A10_059T01_9000004634_31760cztM0_level2_quad_clean.evt
Size (bytes)865,517,76086,889,600
Size825.4 MB 82.9 MB
Events in quadrant A7,596,753540,435
Events in quadrant B6,152,777591,061
Events in quadrant C7,532,863489,664
Events in quadrant D4,515,945578,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268341
B0226411
C0265981
D0175281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6159155125.182660%
B615964110.407534%
C6159177328.787141%
D6160811.314935%

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 7389 6160 1101 1101 14.90% 17.87%
B 7389 6160 355 355 4.80% 5.76%
C 7389 6160 1329 1329 17.99% 21.57%
D 7390 6161 71 71 0.96% 1.15%

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 0 13 4862066 34249.41 708 697 141.9
A 13 254 10797 71.16 708 697 141.9
A 3 137 6625 41.76 708 697 141.9
B 6 159 1811883 12799.66 748 732 141.5
B 5 172 1141878 8064.64 748 732 141.5
B 0 229 89161 624.94 748 732 141.5
C 3 233 3151334 20519.14 660 665 153.5
C 0 10 1305908 8500.56 660 665 153.5
C 10 22 368611 2396.3 660 665 153.5
D 8 195 1159123 6641.92 744 726 174.4
D 12 218 162803 929.3 744 726 174.4
D 12 233 99283 565.1 744 726 174.4

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