ASTROSAT CZTI

Data Quality Report

Orbit 28820

Creation date: 2024-06-27T19:56:47.601421
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_121T01_9000004134_28820cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28820cztM0_level2_quad_clean.evt
Size (bytes)657,472,320106,102,080
Size627.0 MB 101.2 MB
Events in quadrant A2,973,329718,258
Events in quadrant B3,147,484750,618
Events in quadrant C4,385,441709,403
Events in quadrant D9,007,302623,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122371
B0127501
C0172781
D0309371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896270.457938%
B5896651.102442%
C58962384.036635%
D5897196833.372901%

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 7226 5896 0 0 0.00% 0.00%
B 7226 5896 5 5 0.07% 0.08%
C 7226 5896 1 1 0.01% 0.02%
D 7227 5897 1962 1962 27.15% 33.27%

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 13 254 11795 72.22 767 754 152.9
A 0 226 6596 38.21 767 754 152.9
A 3 137 6376 36.77 767 754 152.9
B 10 245 46196 319.14 774 757 142.4
B 0 156 31884 218.62 774 757 142.4
B 10 246 20429 138.17 774 757 142.4
C 3 233 1202214 6927.81 757 764 173.4
C 14 238 163874 940.52 757 764 173.4
C 14 254 61003 347.35 757 764 173.4
D 8 195 5328277 32676.42 693 676 163.0
D 1 52 541678 3318.19 693 676 163.0
D 7 80 309021 1891.21 693 676 163.0

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