ASTROSAT CZTI

Data Quality Report

Orbit 26266

Creation date: 2024-06-27T19:26:47.777952
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/AS1A09_079T03_9000003790_26266cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26266cztM0_level2_quad_clean.evt
Size (bytes)556,640,64085,993,920
Size530.9 MB 82.0 MB
Events in quadrant A3,889,740521,310
Events in quadrant B3,881,891532,554
Events in quadrant C4,876,136515,062
Events in quadrant D3,700,749512,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163810
B0162670
C0193200
D0159270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75031241.652672%
B75041672.225480%
C75046218.275586%
D75041011.345949%

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 9118 7505 20 20 0.22% 0.27%
B 9119 7506 41 41 0.45% 0.55%
C 9119 7506 263 263 2.88% 3.50%
D 9119 7506 8 8 0.09% 0.11%

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 0 13 248626 1304.37 939 919 189.9
A 13 254 13042 63.84 939 919 189.9
A 3 137 8700 40.97 939 919 189.9
B 5 172 182832 1020.04 935 912 178.3
B 12 111 21371 114.72 935 912 178.3
B 11 111 18780 100.19 935 912 178.3
C 4 254 1170125 5666.25 881 886 206.4
C 14 238 138607 667.41 881 886 206.4
C 3 233 93827 450.4 881 886 206.4
D 12 33 83406 375.08 919 896 220.0
D 12 233 48820 217.86 919 896 220.0
D 1 52 47922 213.78 919 896 220.0

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