ASTROSAT CZTI

Data Quality Report

Orbit 33027

Creation date: 2024-06-27T20:44:25.661602
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/AS1A11_080T01_9000004756_33027cztM0_level2.evt modeM0/AS1A11_080T01_9000004756_33027cztM0_level2_quad_clean.evt
Size (bytes)725,996,16088,848,000
Size692.4 MB 84.7 MB
Events in quadrant A2,621,866630,218
Events in quadrant B4,041,466601,591
Events in quadrant C5,940,403545,274
Events in quadrant D9,005,038520,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113463
B0155632
C0213882
D0306232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561050.089127%
B56103876.898396%
C561098517.557932%
D5610147226.238859%

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 7223 5611 0 0 0.00% 0.00%
B 7222 5610 252 252 3.49% 4.49%
C 7223 5611 807 807 11.17% 14.38%
D 7223 5611 1590 1590 22.01% 28.34%

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 6 16502 115.67 671 658 137.0
A 13 254 11413 78.52 671 658 137.0
A 15 169 7865 52.62 671 658 137.0
B 5 172 1158159 9287.33 646 632 124.6
B 0 219 83829 667.52 646 632 124.6
B 5 31 69277 550.77 646 632 124.6
C 7 221 3344943 24309.36 592 598 137.6
C 0 10 185027 1340.58 592 598 137.6
C 1 241 62343 448.81 592 598 137.6
D 7 223 3282017 20678.55 601 589 158.7
D 8 195 2154259 13571.76 601 589 158.7
D 2 250 437675 2754.38 601 589 158.7

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