ASTROSAT CZTI

Data Quality Report

Orbit 06785

Creation date: 2024-06-27T15:11:38.152425
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/AS1G06_086T02_9000000936_06785cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06785cztM0_level2_quad_clean.evt
Size (bytes)214,309,44045,020,160
Size204.4 MB 42.9 MB
Events in quadrant A1,435,277287,855
Events in quadrant B1,397,229291,095
Events in quadrant C1,345,164287,591
Events in quadrant D2,100,035275,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0652384
B0640189
C06378104
D08500235

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0662
B0662
C0662
D0662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3102471.515152%
B3102310.999355%
C3096250.807494%
D30971364.391346%

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 3152 3105 5 5 0.16% 0.16%
B 3154 3109 1 1 0.03% 0.03%
C 3154 3099 0 0 0.00% 0.00%
D 3154 3103 79 79 2.50% 2.55%

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 8 15 93871 1287.92 347 340 72.6
A 0 47 3552 44.23 347 340 72.6
A 0 226 3318 41.01 347 340 72.6
B 12 111 7136 96.38 354 345 70.5
B 11 111 5493 73.06 354 345 70.5
B 0 228 5368 71.29 354 345 70.5
C 9 247 10424 124.76 340 342 80.8
C 12 4 3538 39.55 340 342 80.8
C 13 61 2611 28.08 340 342 80.8
D 2 63 456491 5416.5 333 322 84.2
D 8 195 230478 2732.85 333 322 84.2
D 2 152 100324 1187.41 333 322 84.2

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