ASTROSAT CZTI

Data Quality Report

Orbit 21399

Creation date: 2024-06-27T18:27:22.542691
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/AS1T03_140T01_9000003160_21399cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21399cztM0_level2_quad_clean.evt
Size (bytes)784,031,04098,464,320
Size747.7 MB 93.9 MB
Events in quadrant A3,559,028662,935
Events in quadrant B3,580,108669,957
Events in quadrant C5,460,595630,226
Events in quadrant D10,640,228498,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154532
B0155752
C0212523
D0368082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7465250.334896%
B7465340.455459%
C74644035.399250%
D7465224030.006698%

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 7890 7466 0 0 0.00% 0.00%
B 7890 7466 7 7 0.09% 0.09%
C 7889 7464 178 178 2.26% 2.38%
D 7890 7466 2261 2261 28.66% 30.28%

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 5 168 132161 726.13 887 871 180.8
A 13 254 13501 69.85 887 871 180.8
A 0 226 7675 37.63 887 871 180.8
B 3 64 33212 190.87 885 863 169.5
B 0 190 21881 124.02 885 863 169.5
B 0 230 20881 118.12 885 863 169.5
C 3 233 2057542 10476.92 838 842 196.3
C 14 238 129717 656.49 838 842 196.3
C 13 61 5960 26.07 838 842 196.3
D 12 235 5393470 29166.61 754 730 184.9
D 1 52 1661513 8982.34 754 730 184.9
D 1 20 379537 2048.78 754 730 184.9

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