ASTROSAT CZTI

Data Quality Report

Orbit 15223

Creation date: 2024-06-27T17:05:31.799718
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/AS1A04_105T01_9000002248_15223cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15223cztM0_level2_quad_clean.evt
Size (bytes)599,532,48099,486,720
Size571.8 MB 94.9 MB
Events in quadrant A3,410,272671,055
Events in quadrant B6,537,521611,947
Events in quadrant C4,412,940654,513
Events in quadrant D3,370,063635,874

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141822
B0236561
C0176901
D0141631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62911282.034653%
B6291113117.978064%
C6291600.953743%
D62911251.986966%

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 7427 6292 68 68 0.92% 1.08%
B 7427 6292 787 787 10.60% 12.51%
C 7427 6293 16 16 0.22% 0.25%
D 7427 6292 92 92 1.24% 1.46%

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 0 253 179121 1100.0 792 777 162.1
A 12 189 146692 899.98 792 777 162.1
A 9 143 25797 154.32 792 777 162.1
B 3 112 2963162 21279.08 737 721 139.2
B 3 64 222402 1592.32 737 721 139.2
B 10 245 197713 1414.98 737 721 139.2
C 3 233 1414617 8105.09 754 759 174.4
C 4 254 42024 236.56 754 759 174.4
C 7 247 13322 72.02 754 759 174.4
D 13 172 140982 753.85 761 740 186.0
D 7 223 100963 538.74 761 740 186.0
D 2 16 79246 422.0 761 740 186.0

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