ASTROSAT CZTI

Data Quality Report

Orbit 29785

Creation date: 2024-06-27T20:07:43.344944
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/AS1T03_291T01_9000004278_29785cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29785cztM0_level2_quad_clean.evt
Size (bytes)2,584,690,560414,705,600
Size2.4 GB 395.5 MB
Events in quadrant A15,163,5162,667,071
Events in quadrant B25,381,6002,675,338
Events in quadrant C16,793,8382,549,496
Events in quadrant D18,798,5892,484,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06520
B06520
C06520
D06520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0653746
B0981696
C0697366
D0759336

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A317682810.884538%
B317687822.461597%
C317698662.725928%
D317696351.998804%

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 35533 31773 7 7 0.02% 0.02%
B 35533 31773 99 99 0.28% 0.31%
C 35534 31774 112 112 0.32% 0.35%
D 35534 31774 371 371 1.04% 1.17%

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 69797 84.67 3910 3826 779.2
A 12 96 50352 59.71 3910 3826 779.2
A 3 137 38620 44.65 3910 3826 779.2
B 6 159 8998174 12353.35 3853 3762 728.1
B 0 229 1025331 1403.07 3853 3762 728.1
B 0 190 98517 130.14 3853 3762 728.1
C 10 22 744421 855.6 3738 3761 865.7
C 14 238 665347 764.26 3738 3761 865.7
C 3 233 595090 683.1 3738 3761 865.7
D 8 195 1990844 2241.92 3766 3666 886.4
D 7 80 1034590 1163.08 3766 3666 886.4
D 2 250 476345 533.27 3766 3666 886.4

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