ASTROSAT CZTI

Data Quality Report

Orbit 31343

Creation date: 2024-06-27T20:27:02.736543
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_053T40_9000004542_31343cztM0_level2.evt modeM0/AS1A10_053T40_9000004542_31343cztM0_level2_quad_clean.evt
Size (bytes)637,361,28079,165,440
Size607.8 MB 75.5 MB
Events in quadrant A3,825,177476,898
Events in quadrant B6,155,978471,342
Events in quadrant C4,310,325452,888
Events in quadrant D4,485,118455,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161992
B0238872
C0174822
D0184353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77642132.743431%
B77643354.314786%
C77644245.461103%
D77631782.292928%

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 7844 7766 0 0 0.00% 0.00%
B 7844 7766 13 13 0.17% 0.17%
C 7844 7766 27 27 0.34% 0.35%
D 7843 7765 11 11 0.14% 0.14%

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 14659 68.34 991 968 200.3
A 3 137 10271 46.44 991 968 200.3
A 0 226 8402 37.11 991 968 200.3
B 6 159 2161698 11533.81 966 940 187.3
B 0 190 76568 403.69 966 940 187.3
B 5 172 40127 209.17 966 940 187.3
C 3 233 235420 1079.86 926 931 217.1
C 14 238 185835 851.51 926 931 217.1
C 0 10 161808 740.86 926 931 217.1
D 8 195 653655 2862.28 957 930 228.0
D 13 249 62143 268.43 957 930 228.0
D 12 233 42008 180.13 957 930 228.0

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