ASTROSAT CZTI

Data Quality Report

Orbit 43435

Creation date: 2024-06-27T22:51:57.771999
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/AS1A12_018T01_9000005874_43435cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43435cztM0_level2_quad_clean.evt
Size (bytes)453,237,12084,663,360
Size432.2 MB 80.7 MB
Events in quadrant A5,721,267494,084
Events in quadrant B2,936,732618,071
Events in quadrant C2,647,887584,741
Events in quadrant D5,032,770471,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207201
B0126891
C0115801
D0190081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5638116120.592409%
B5638410.727208%
C563850.088684%
D563878413.905640%

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 7041 5639 1043 1043 14.81% 18.50%
B 7041 5639 30 30 0.43% 0.53%
C 7041 5639 1 1 0.01% 0.02%
D 7041 5639 751 751 10.67% 13.32%

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 15 222 2904408 26475.32 537 526 109.7
A 10 83 520368 4739.51 537 526 109.7
A 15 237 192194 1747.48 537 526 109.7
B 0 199 182353 1585.74 596 578 114.6
B 0 186 143208 1244.25 596 578 114.6
B 0 189 114287 991.95 596 578 114.6
C 15 214 236204 1724.38 582 582 136.6
C 3 233 125090 911.2 582 582 136.6
C 14 67 15017 105.64 582 582 136.6
D 1 52 2235470 16538.56 548 530 135.1
D 10 118 311784 2303.28 548 530 135.1
D 13 249 125676 926.08 548 530 135.1

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