ASTROSAT CZTI

Data Quality Report

Orbit 31729

Creation date: 2024-06-27T20:32:01.223267
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/AS1T04_034T01_9000004632_31729cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31729cztM0_level2_quad_clean.evt
Size (bytes)629,599,68078,750,720
Size600.4 MB 75.1 MB
Events in quadrant A4,427,952500,269
Events in quadrant B6,023,198501,312
Events in quadrant C4,072,524496,344
Events in quadrant D4,158,766487,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170811
B0217493
C0159801
D0163181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57094067.111578%
B57094688.197583%
C57093185.570152%
D57091222.136977%

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 7049 5710 178 178 2.53% 3.12%
B 7049 5710 171 171 2.43% 2.99%
C 7049 5710 87 87 1.23% 1.52%
D 7049 5710 26 26 0.37% 0.46%

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 0 13 1221427 7445.53 828 815 163.9
A 13 254 11575 65.63 828 815 163.9
A 4 2 9499 52.97 828 815 163.9
B 6 159 1590446 10565.16 817 801 150.5
B 4 80 966609 6418.99 817 801 150.5
B 5 172 75629 497.32 817 801 150.5
C 0 10 715927 3869.49 804 814 184.8
C 14 238 131557 707.45 804 814 184.8
C 10 22 42410 225.08 804 814 184.8
D 8 195 852730 4372.13 830 813 194.9
D 13 249 92893 472.56 830 813 194.9
D 12 227 27538 137.16 830 813 194.9

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