ASTROSAT CZTI

Data Quality Report

Orbit 36570

Creation date: 2024-06-27T21:28:34.572944
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/AS1A11_097T17_9000005222_36570cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36570cztM0_level2_quad_clean.evt
Size (bytes)485,533,44072,054,720
Size463.0 MB 68.7 MB
Events in quadrant A2,992,607452,941
Events in quadrant B3,345,923451,561
Events in quadrant C3,316,965446,193
Events in quadrant D4,654,994424,909

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126343
B0137742
C0133952
D0178822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5811530.912063%
B5811631.084151%
C58111182.030632%
D58112754.732404%

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 7124 5812 40 40 0.56% 0.69%
B 7124 5812 19 19 0.27% 0.33%
C 7124 5812 77 77 1.08% 1.32%
D 7124 5812 248 248 3.48% 4.27%

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 15 223 230273 1715.73 656 642 133.8
A 10 83 220207 1640.52 656 642 133.8
A 13 254 7584 51.87 656 642 133.8
B 5 172 210795 1678.09 649 630 125.2
B 4 232 174143 1385.44 649 630 125.2
B 0 189 164907 1311.69 649 630 125.2
C 0 10 420735 2822.93 639 644 148.8
C 15 214 246530 1652.31 639 644 148.8
C 14 254 77885 519.05 639 644 148.8
D 12 16 750474 4864.37 633 616 154.2
D 1 20 347706 2251.59 633 616 154.2
D 2 250 303859 1967.16 633 616 154.2

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