ASTROSAT CZTI

Data Quality Report

Orbit 46261

Creation date: 2024-06-27T23:20:57.831209
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_071T10_9000006192_46261cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46261cztM0_level2_quad_clean.evt
Size (bytes)589,933,440123,143,040
Size562.6 MB 117.4 MB
Events in quadrant A6,600,449819,487
Events in quadrant B4,549,053845,576
Events in quadrant C3,608,195830,488
Events in quadrant D6,482,635697,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248632
B0186942
C0164882
D0247312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77041361.765317%
B77051562.024659%
C7704540.700935%
D770478910.241433%

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 7769 7707 1 1 0.01% 0.01%
B 7770 7706 50 50 0.64% 0.65%
C 7769 7707 37 37 0.48% 0.48%
D 7769 7707 682 682 8.78% 8.85%

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 3310984 18686.6 848 827 177.1
A 13 254 13530 71.71 848 827 177.1
A 3 137 9936 51.42 848 827 177.1
B 3 112 994447 5931.12 848 817 167.5
B 5 172 135535 804.15 848 817 167.5
B 5 32 23049 132.7 848 817 167.5
C 12 2 204055 1016.34 850 855 199.9
C 1 3 43162 211.61 850 855 199.9
C 0 207 19531 93.41 850 855 199.9
D 1 52 1194231 5923.98 807 780 201.5
D 2 249 771891 3827.59 807 780 201.5
D 5 171 677404 3358.58 807 780 201.5

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