ASTROSAT CZTI

Data Quality Report

Orbit 46291

Creation date: 2024-06-27T23:21:21.398299
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/AS1A13_072T02_9000006194_46291cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46291cztM0_level2_quad_clean.evt
Size (bytes)561,378,240134,087,040
Size535.4 MB 127.9 MB
Events in quadrant A6,751,939893,933
Events in quadrant B5,455,557912,214
Events in quadrant C3,788,574878,126
Events in quadrant D4,146,482804,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256090
B0217750
C0173980
D0186080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8227780.948098%
B82281351.640739%
C8228180.218765%
D8228991.203209%

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 8227 8227 1 1 0.01% 0.01%
B 8228 8228 17 17 0.21% 0.21%
C 8228 8228 6 6 0.07% 0.07%
D 8228 8228 64 64 0.78% 0.78%

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 10 83 3018757 15091.18 956 936 200.0
A 15 223 31861 154.65 956 936 200.0
A 13 254 13042 60.54 956 936 200.0
B 3 112 1502797 7946.72 942 911 189.0
B 5 255 89229 467.3 942 911 189.0
B 0 190 74035 386.91 942 911 189.0
C 1 3 73320 322.33 945 950 224.5
C 12 250 16471 69.13 945 950 224.5
C 12 2 12281 50.47 945 950 224.5
D 13 249 240176 1016.58 939 911 235.4
D 1 52 239940 1015.58 939 911 235.4
D 2 234 40360 167.61 939 911 235.4

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