ASTROSAT CZTI

Data Quality Report

Orbit 33930

Creation date: 2024-06-27T20:54:15.654761
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_088T01_9000004844_33930cztM0_level2.evt modeM0/AS1T04_088T01_9000004844_33930cztM0_level2_quad_clean.evt
Size (bytes)460,036,80080,781,120
Size438.7 MB 77.0 MB
Events in quadrant A2,901,091543,090
Events in quadrant B3,133,756536,840
Events in quadrant C3,349,615513,984
Events in quadrant D4,209,661502,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115553
B0122862
C0129832
D0158792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4988501.002406%
B49881352.706496%
C49881523.047314%
D4988971.944667%

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 7110 4989 34 34 0.48% 0.68%
B 7110 4989 84 84 1.18% 1.68%
C 7110 4989 139 139 1.95% 2.79%
D 7110 4989 77 77 1.08% 1.54%

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 15 169 372623 2878.87 650 638 129.2
A 10 83 12871 94.67 650 638 129.2
A 13 254 8996 64.68 650 638 129.2
B 5 172 424754 3653.07 627 614 116.1
B 0 190 49413 420.3 627 614 116.1
B 0 189 30529 257.65 627 614 116.1
C 9 187 314610 2265.64 608 612 138.6
C 0 10 238289 1714.95 608 612 138.6
C 15 214 218452 1571.81 608 612 138.6
D 8 195 978060 6427.82 627 612 152.1
D 10 118 241735 1585.66 627 612 152.1
D 2 250 214363 1405.65 627 612 152.1

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