ASTROSAT CZTI

Data Quality Report

Orbit 12468

Creation date: 2024-06-27T16:27:49.772497
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_174T01_9000001850_12468cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12468cztM0_level2_quad_clean.evt
Size (bytes)907,076,16085,933,440
Size865.1 MB 82.0 MB
Events in quadrant A15,171,757332,127
Events in quadrant B3,836,314611,992
Events in quadrant C3,186,547617,235
Events in quadrant D4,811,575560,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496972
B0155801
C0139441
D0188751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6860641893.556851%
B68602183.177843%
C6860500.728863%
D68603875.641399%

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 7230 6860 5281 5281 73.04% 76.98%
B 7231 6861 75 75 1.04% 1.09%
C 7231 6862 0 0 0.00% 0.00%
D 7231 6861 302 302 4.18% 4.40%

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 13 251 10966984 101543.05 520 511 108.0
A 0 23 1941084 17968.56 520 511 108.0
A 0 226 133837 1234.52 520 511 108.0
B 4 239 276353 1733.8 828 810 158.9
B 3 64 159610 999.22 828 810 158.9
B 0 187 49537 306.61 828 810 158.9
C 3 233 10701 52.06 814 821 189.8
C 13 61 6012 27.35 814 821 189.8
C 3 202 2027 6.35 814 821 189.8
D 1 52 1480353 7690.08 790 767 192.4
D 13 104 94842 488.95 790 767 192.4
D 13 249 71671 368.52 790 767 192.4

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