ASTROSAT CZTI

Data Quality Report

Orbit 36391

Creation date: 2024-06-27T21:26:13.913864
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_084T01_9000005198_36391cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36391cztM0_level2_quad_clean.evt
Size (bytes)533,145,60075,075,840
Size508.4 MB 71.6 MB
Events in quadrant A3,393,671475,730
Events in quadrant B4,368,830460,455
Events in quadrant C3,535,622463,477
Events in quadrant D4,422,458434,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137593
B0169722
C0138212
D0171502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283160.254655%
B62832844.520134%
C6283590.939042%
D62832413.835747%

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 10349 6285 5 5 0.05% 0.08%
B 10349 6285 188 188 1.82% 2.99%
C 10349 6285 42 42 0.41% 0.67%
D 10349 6285 239 239 2.31% 3.80%

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 10 83 205066 1267.76 815 800 161.1
A 9 143 21432 128.05 815 800 161.1
A 13 254 11208 64.59 815 800 161.1
B 5 172 861607 5736.67 798 779 150.1
B 0 189 129430 857.35 798 779 150.1
B 4 232 93831 620.11 798 779 150.1
C 15 214 268379 1473.84 788 795 181.6
C 0 10 189946 1041.84 788 795 181.6
C 13 61 5482 25.82 788 795 181.6
D 12 6 579360 3039.71 783 763 190.3
D 13 249 208230 1089.95 783 763 190.3
D 10 118 157362 822.71 783 763 190.3

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