ASTROSAT CZTI

Data Quality Report

Orbit 11811

Creation date: 2024-06-27T16:18:36.474111
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_022T04_9000001746_11811cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11811cztM0_level2_quad_clean.evt
Size (bytes)479,185,92078,618,240
Size457.0 MB 75.0 MB
Events in quadrant A3,236,864490,461
Events in quadrant B4,182,516491,774
Events in quadrant C3,050,980497,110
Events in quadrant D3,610,279457,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135823
B0164972
C0131502
D0150082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358520.817867%
B63582393.759044%
C6358290.456118%
D63581542.422145%

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 7719 6360 6 6 0.08% 0.09%
B 7719 6360 112 112 1.45% 1.76%
C 7719 6360 1 1 0.01% 0.02%
D 7719 6360 110 110 1.43% 1.73%

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 1 162 74813 469.04 788 775 157.9
A 1 178 37499 232.65 788 775 157.9
A 1 161 32797 202.86 788 775 157.9
B 4 239 524243 3563.43 793 777 146.9
B 15 185 326671 2218.48 793 777 146.9
B 3 64 93711 632.64 793 777 146.9
C 1 16 7710 38.73 776 782 178.9
C 15 127 7206 35.92 776 782 178.9
C 8 208 6248 30.56 776 782 178.9
D 1 52 345324 1919.83 753 732 179.5
D 10 199 171614 952.04 753 732 179.5
D 8 195 84518 466.8 753 732 179.5

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