ASTROSAT CZTI

Data Quality Report

Orbit 26932

Creation date: 2024-06-27T19:34:39.245424
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/AS1A09_134T01_9000003896_26932cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26932cztM0_level2_quad_clean.evt
Size (bytes)587,992,32082,581,120
Size560.8 MB 78.8 MB
Events in quadrant A7,127,568420,148
Events in quadrant B3,498,677562,971
Events in quadrant C3,078,550546,609
Events in quadrant D3,676,127531,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253090
B0144940
C0131910
D0152080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286165126.264715%
B62871071.701925%
C6288480.763359%
D6286751.193128%

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 7187 6287 1416 1416 19.70% 22.52%
B 7187 6287 51 51 0.71% 0.81%
C 7188 6289 4 4 0.06% 0.06%
D 7187 6288 55 55 0.77% 0.87%

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 14 235 4413984 33974.83 638 625 129.9
A 0 13 181407 1391.69 638 625 129.9
A 6 16 25924 194.76 638 625 129.9
B 0 189 268784 1848.05 755 736 145.0
B 10 245 135679 930.36 755 736 145.0
B 10 246 61012 415.57 755 736 145.0
C 2 16 126516 729.14 726 729 172.5
C 14 238 114491 659.44 726 729 172.5
C 15 208 9601 51.43 726 729 172.5
D 7 80 409447 2145.71 723 706 190.5
D 2 250 207956 1087.97 723 706 190.5
D 11 176 112647 587.64 723 706 190.5

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