ASTROSAT CZTI

Data Quality Report

Orbit 33235

Creation date: 2024-06-27T20:46:25.343576
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/AS1A10_067T01_9000004774_33235cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33235cztM0_level2_quad_clean.evt
Size (bytes)498,395,52050,022,720
Size475.3 MB 47.7 MB
Events in quadrant A2,630,241306,994
Events in quadrant B3,949,479298,970
Events in quadrant C2,906,669297,240
Events in quadrant D5,278,628270,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105452
B0150531
C0115281
D0192951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486090.185185%
B48604178.580247%
C4860420.864198%
D486050910.473251%

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 6984 4861 0 0 0.00% 0.00%
B 6984 4861 271 271 3.88% 5.57%
C 6984 4861 36 36 0.52% 0.74%
D 6984 4861 388 388 5.56% 7.98%

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 13 6 17756 128.19 673 663 133.3
A 13 254 8377 57.85 673 663 133.3
A 0 226 5815 38.64 673 663 133.3
B 5 172 1130299 9459.13 637 623 119.4
B 4 170 105661 879.52 637 623 119.4
B 0 219 65759 545.4 637 623 119.4
C 0 10 171179 1155.67 645 653 147.6
C 10 49 140403 947.1 645 653 147.6
C 14 254 23818 156.99 645 653 147.6
D 8 195 969838 6308.59 631 614 153.6
D 7 80 448380 2914.47 631 614 153.6
D 12 3 401046 2606.37 631 614 153.6

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