ASTROSAT CZTI

Data Quality Report

Orbit 16672

Creation date: 2024-06-27T17:25:57.534755
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/AS1A05_078T01_9000002462_16672cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16672cztM0_level2_quad_clean.evt
Size (bytes)464,973,120122,304,960
Size443.4 MB 116.6 MB
Events in quadrant A3,633,907825,480
Events in quadrant B3,612,701851,987
Events in quadrant C3,074,201814,667
Events in quadrant D3,357,767797,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149652
B0145861
C0132161
D0140311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59373175.339397%
B59371282.155971%
C5937811.364325%
D59371202.021223%

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 7143 5939 195 195 2.73% 3.28%
B 7143 5939 54 54 0.76% 0.91%
C 7143 5939 0 0 0.00% 0.00%
D 7143 5939 40 40 0.56% 0.67%

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 15 174 739653 5055.15 734 722 146.2
A 9 143 53859 363.52 734 722 146.2
A 3 1 7475 46.2 734 722 146.2
B 5 172 165994 1210.23 744 729 136.6
B 15 35 163481 1191.83 744 729 136.6
B 7 220 136215 992.16 744 729 136.6
C 3 233 194465 1192.69 706 710 162.5
C 14 238 109727 671.07 706 710 162.5
C 5 237 13612 79.42 706 710 162.5
D 1 52 378586 2218.04 717 697 170.4
D 10 70 171678 1003.58 717 697 170.4
D 13 248 50101 289.98 717 697 170.4

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