ASTROSAT CZTI

Data Quality Report

Orbit 19054

Creation date: 2024-06-27T17:58:33.746558
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_046T01_9000002834_19054cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19054cztM0_level2_quad_clean.evt
Size (bytes)538,421,76085,818,240
Size513.5 MB 81.8 MB
Events in quadrant A3,621,105520,133
Events in quadrant B4,001,806529,986
Events in quadrant C4,235,670515,028
Events in quadrant D3,928,339501,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157572
B0166992
C0173552
D0166822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76491061.385802%
B76501652.156863%
C76503724.862745%
D76501041.359477%

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 7984 7650 0 0 0.00% 0.00%
B 7985 7651 21 21 0.26% 0.27%
C 7985 7651 179 179 2.24% 2.34%
D 7985 7651 11 11 0.14% 0.14%

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 13 254 8764 41.14 938 918 190.7
A 0 226 8154 37.94 938 918 190.7
A 3 137 7484 34.43 938 918 190.7
B 7 220 160499 878.98 933 907 181.6
B 3 112 110998 606.34 933 907 181.6
B 3 64 25000 132.7 933 907 181.6
C 9 54 562329 2660.86 893 899 211.0
C 14 238 136465 642.51 893 899 211.0
C 3 233 53463 249.12 893 899 211.0
D 7 238 398133 1772.8 919 893 224.1
D 2 234 38377 167.28 919 893 224.1
D 13 238 16289 68.71 919 893 224.1

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