ASTROSAT CZTI

Data Quality Report

Orbit 28659

Creation date: 2024-06-27T19:54:34.677537
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_073T08_9000004112_28659cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28659cztM0_level2_quad_clean.evt
Size (bytes)523,618,56069,756,480
Size499.4 MB 66.5 MB
Events in quadrant A3,598,131435,314
Events in quadrant B3,976,536437,782
Events in quadrant C3,662,235410,923
Events in quadrant D4,198,851393,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145602
B0156382
C0147472
D0165592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6229520.834805%
B62292223.563975%
C62292273.644245%
D62281542.472704%

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 7539 6230 2 2 0.03% 0.03%
B 7539 6230 123 123 1.63% 1.97%
C 7539 6230 54 54 0.72% 0.87%
D 7538 6229 121 121 1.61% 1.94%

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 15 174 120563 679.75 899 888 176.1
A 13 254 11826 62.13 899 888 176.1
A 8 192 9770 50.45 899 888 176.1
B 10 245 507084 3084.29 885 870 164.1
B 12 111 18989 110.4 885 870 164.1
B 11 111 17424 100.86 885 870 164.1
C 14 238 167907 867.78 837 848 192.5
C 2 16 164124 848.13 837 848 192.5
C 14 254 45097 229.85 837 848 192.5
D 1 52 581528 2923.44 839 817 198.6
D 8 195 199072 998.07 839 817 198.6
D 7 80 148677 744.36 839 817 198.6

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