ASTROSAT CZTI

Data Quality Report

Orbit 23020

Creation date: 2024-06-27T18:48:53.884656
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/AS1C05_004T01_9000003404_23020cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23020cztM0_level2_quad_clean.evt
Size (bytes)524,232,000117,498,240
Size499.9 MB 112.1 MB
Events in quadrant A3,482,629771,525
Events in quadrant B3,699,113780,521
Events in quadrant C3,553,825749,532
Events in quadrant D4,626,428729,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155411
B0160091
C0155741
D0188821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75691702.246003%
B75702072.734478%
C75701812.391017%
D75703034.002642%

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 7744 7571 3 3 0.04% 0.04%
B 7745 7572 31 31 0.40% 0.41%
C 7745 7572 0 0 0.00% 0.00%
D 7745 7572 159 159 2.05% 2.10%

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 10824 54.94 900 879 181.0
A 15 174 10814 54.88 900 879 181.0
A 3 137 8205 40.47 900 879 181.0
B 4 216 135558 784.49 891 867 171.7
B 0 189 31048 175.79 891 867 171.7
B 0 190 25377 142.76 891 867 171.7
C 14 238 135991 666.16 860 861 202.8
C 7 247 42724 206.38 860 861 202.8
C 8 128 12478 57.27 860 861 202.8
D 1 52 748594 3524.92 872 847 212.1
D 13 174 186098 873.28 872 847 212.1
D 13 153 148136 694.33 872 847 212.1

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