ASTROSAT CZTI

Data Quality Report

Orbit 34594

Creation date: 2022-02-20T12:47:17.534684
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/AS1C07_014T01_9000004950_34594cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34594cztM0_level2_quad_clean.evt
Size (bytes)435,101,76068,227,200
Size414.9 MB 65.1 MB
Events in quadrant A2,697,612439,279
Events in quadrant B3,463,799435,872
Events in quadrant C2,980,997430,555
Events in quadrant D3,690,208404,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107963
B0133032
C0119062
D0144982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5073200.394244%
B50732945.795387%
C5073290.571654%
D5073561.103883%

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 6985 5074 4 4 0.06% 0.08%
B 6985 5074 182 182 2.61% 3.59%
C 6985 5074 24 24 0.34% 0.47%
D 6985 5074 45 45 0.64% 0.89%

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 9 143 45449 330.99 673 664 135.3
A 10 83 43190 314.29 673 664 135.3
A 13 254 10096 69.71 673 664 135.3
B 5 172 598649 4827.5 655 642 123.9
B 5 255 160410 1289.75 655 642 123.9
B 0 189 34118 270.24 655 642 123.9
C 15 214 216270 1450.0 642 650 148.7
C 0 10 84729 565.41 642 650 148.7
C 14 67 76104 507.41 642 650 148.7
D 8 195 815327 4751.6 637 625 171.5
D 5 223 91003 527.11 637 625 171.5
D 13 249 56076 323.41 637 625 171.5

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