ASTROSAT CZTI

Data Quality Report

Orbit 21961

Creation date: 2024-06-27T18:34:34.604852
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_130T01_9000003246_21961cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21961cztM0_level2_quad_clean.evt
Size (bytes)509,051,52099,172,800
Size485.5 MB 94.6 MB
Events in quadrant A3,346,673639,792
Events in quadrant B3,491,445651,504
Events in quadrant C3,394,461634,987
Events in quadrant D4,715,103595,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144763
B0147982
C0144142
D0186962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6906831.201853%
B69061251.810020%
C69061141.650738%
D69064616.675355%

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 7521 6906 0 0 0.00% 0.00%
B 7521 6906 22 22 0.29% 0.32%
C 7521 6906 1 1 0.01% 0.01%
D 7521 6907 330 330 4.39% 4.78%

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 2 79 23783 133.1 861 843 172.3
A 13 254 11678 62.86 861 843 172.3
A 3 137 7527 38.78 861 843 172.3
B 3 64 84926 510.33 855 833 164.8
B 6 36 22377 130.74 855 833 164.8
B 12 111 19942 115.97 855 833 164.8
C 14 238 129057 651.58 836 842 196.8
C 10 22 7335 33.0 836 842 196.8
C 13 61 5767 25.03 836 842 196.8
D 13 174 1146691 5672.13 828 806 202.0
D 2 136 158694 781.55 828 806 202.0
D 1 52 155957 768.0 828 806 202.0

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