ASTROSAT CZTI

Data Quality Report

Orbit 14362

Creation date: 2024-06-27T16:54:00.258939
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/AS1A04_048T01_9000002114_14362cztM0_level2.evt modeM0/AS1A04_048T01_9000002114_14362cztM0_level2_quad_clean.evt
Size (bytes)640,016,64099,794,880
Size610.4 MB 95.2 MB
Events in quadrant A3,992,413626,564
Events in quadrant B4,298,965625,503
Events in quadrant C5,075,309608,170
Events in quadrant D5,459,031590,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172413
B0179952
C0208012
D0216382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82143434.175797%
B82144064.942781%
C82143193.883613%
D82144595.588020%

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 9135 8215 4 4 0.04% 0.05%
B 9135 8215 37 37 0.41% 0.45%
C 9135 8215 1 1 0.01% 0.01%
D 9135 8215 173 173 1.89% 2.11%

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 12 189 28615 132.44 1024 999 208.5
A 15 69 9268 39.66 1024 999 208.5
A 0 226 9060 38.66 1024 999 208.5
B 0 229 191299 971.11 1020 992 196.0
B 0 189 53687 268.89 1020 992 196.0
B 15 201 25503 125.08 1020 992 196.0
C 3 233 1154695 4992.98 996 1001 231.1
C 3 232 14672 59.17 996 1001 231.1
C 3 234 11916 47.24 996 1001 231.1
D 5 222 950159 4021.05 991 965 236.1
D 1 52 412482 1743.3 991 965 236.1
D 12 110 137450 578.19 991 965 236.1

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