ASTROSAT CZTI

Data Quality Report

Orbit 20965

Creation date: 2024-06-27T18:21:51.527137
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_131T01_9000003090_20965cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20965cztM0_level2_quad_clean.evt
Size (bytes)514,500,480101,675,520
Size490.7 MB 97.0 MB
Events in quadrant A3,520,652647,009
Events in quadrant B3,897,704654,761
Events in quadrant C3,650,316640,602
Events in quadrant D4,008,309619,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152572
B0161502
C0154622
D0167632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7434981.318267%
B74351291.735037%
C74351321.775387%
D74351051.412239%

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 7844 7435 0 0 0.00% 0.00%
B 7845 7436 10 10 0.13% 0.13%
C 7845 7436 0 0 0.00% 0.00%
D 7845 7436 51 51 0.65% 0.69%

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 0 226 7966 38.14 915 892 185.5
A 3 137 7461 35.41 915 892 185.5
A 12 194 6595 30.74 915 892 185.5
B 0 189 92362 525.63 911 885 174.0
B 7 220 80261 456.1 911 885 174.0
B 0 190 51238 289.33 911 885 174.0
C 14 238 136036 655.92 877 884 206.0
C 10 91 75981 364.46 877 884 206.0
C 3 233 14251 64.87 877 884 206.0
D 1 239 265944 1222.26 889 865 216.9
D 1 52 160973 738.25 889 865 216.9
D 13 174 97022 443.37 889 865 216.9

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