ASTROSAT CZTI

Data Quality Report

Orbit 20065

Creation date: 2024-06-27T18:10:50.037200
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_120T01_9000002990_20065cztM0_level2.evt modeM0/AS1T03_120T01_9000002990_20065cztM0_level2_quad_clean.evt
Size (bytes)541,062,720139,867,200
Size516.0 MB 133.4 MB
Events in quadrant A3,562,616965,253
Events in quadrant B4,198,268953,390
Events in quadrant C3,512,883917,257
Events in quadrant D4,628,665903,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150392
B0170452
C0148782
D0184622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7136460.644619%
B71361331.863789%
C7136560.784753%
D71371081.513241%

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 7611 7137 7 7 0.09% 0.10%
B 7611 7137 46 46 0.60% 0.64%
C 7611 7137 0 0 0.00% 0.00%
D 7612 7138 85 85 1.12% 1.19%

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 14 238 50065 269.78 900 885 182.3
A 10 253 31490 167.88 900 885 182.3
A 11 29 8021 39.14 900 885 182.3
B 10 245 275649 1647.17 888 870 166.8
B 4 80 161256 961.44 888 870 166.8
B 7 220 145298 865.78 888 870 166.8
C 14 238 137032 688.05 851 856 197.9
C 4 254 27436 134.3 851 856 197.9
C 3 233 26724 130.7 851 856 197.9
D 1 52 944636 4518.24 861 842 208.9
D 12 218 222601 1061.63 861 842 208.9
D 13 249 51029 240.26 861 842 208.9

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