ASTROSAT CZTI

Data Quality Report

Orbit 31313

Creation date: 2024-06-27T20:26:35.811813
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_053T27_9000004534_31313cztM0_level2.evt modeM0/AS1A10_053T27_9000004534_31313cztM0_level2_quad_clean.evt
Size (bytes)706,040,64076,737,600
Size673.3 MB 73.2 MB
Events in quadrant A3,629,883474,658
Events in quadrant B5,895,607467,870
Events in quadrant C7,099,873424,943
Events in quadrant D4,267,926452,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152002
B0226522
C0261062
D0173442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72381632.252003%
B72383044.200055%
C7238143119.770655%
D72381271.754628%

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 7653 7239 0 0 0.00% 0.00%
B 7653 7239 16 16 0.21% 0.22%
C 7653 7239 255 255 3.33% 3.52%
D 7653 7239 5 5 0.07% 0.07%

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 13343 65.93 940 919 188.4
A 3 137 9542 45.76 940 919 188.4
A 0 226 7986 37.5 940 919 188.4
B 6 159 1994980 11206.15 916 891 177.9
B 4 80 197729 1106.17 916 891 177.9
B 0 190 34810 190.61 916 891 177.9
C 3 233 3290301 16702.48 837 842 196.9
C 14 238 268557 1359.34 837 842 196.9
C 14 254 195487 988.33 837 842 196.9
D 8 195 737477 3368.49 915 895 218.7
D 2 234 32814 145.97 915 895 218.7
D 2 250 21381 93.69 915 895 218.7

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