ASTROSAT CZTI

Data Quality Report

Orbit 07458

Creation date: 2024-06-27T15:20:01.934266
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/AS1A02_108T01_9000001024_07458cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07458cztM0_level2_quad_clean.evt
Size (bytes)903,816,00095,987,520
Size861.9 MB 91.5 MB
Events in quadrant A15,463,084411,338
Events in quadrant B3,697,435669,445
Events in quadrant C3,545,588654,859
Events in quadrant D4,134,655623,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513804
B0164663
C0162153
D0176603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7845501863.964308%
B7845961.223709%
C7845430.548120%
D78451271.618866%

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 8760 7847 4121 4121 47.04% 52.52%
B 8760 7848 2 2 0.02% 0.03%
C 8760 7848 0 0 0.00% 0.00%
D 8760 7848 77 77 0.88% 0.98%

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 15 239 12780785 90500.09 688 671 141.2
A 0 128 17278 117.6 688 671 141.2
A 15 234 14353 96.88 688 671 141.2
B 0 214 50441 271.52 933 907 182.4
B 12 111 19314 100.9 933 907 182.4
B 11 111 15038 77.46 933 907 182.4
C 1 16 32406 149.73 898 902 210.4
C 13 61 6876 28.39 898 902 210.4
C 9 68 6164 25.01 898 902 210.4
D 12 221 178625 815.27 888 859 218.0
D 2 14 151883 692.63 888 859 218.0
D 12 233 111865 509.1 888 859 218.0

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