ASTROSAT CZTI

Data Quality Report

Orbit 03974

Creation date: 2024-06-27T14:35:51.629472
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/AS1G05_170T01_9000000510_03974cztM0_level2.evt modeM0/AS1G05_170T01_9000000510_03974cztM0_level2_quad_clean.evt
Size (bytes)1,025,484,480142,580,160
Size978.0 MB 136.0 MB
Events in quadrant A7,627,904867,173
Events in quadrant B9,166,889845,519
Events in quadrant C6,345,591851,081
Events in quadrant D7,005,895823,773

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318015
B03603544
C02844410
D03053414

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134677315.428083%
B134618406.240250%
C134641851.374034%
D134634243.149372%

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 15208 13471 321 321 2.11% 2.38%
B 15208 13471 417 417 2.74% 3.10%
C 15208 13471 10 10 0.07% 0.07%
D 15208 13470 191 191 1.26% 1.42%

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 15 236 900174 2817.65 1550 1517 318.9
A 0 50 471996 1475.14 1550 1517 318.9
A 0 118 127810 395.98 1550 1517 318.9
B 14 167 1792694 5954.89 1561 1526 300.8
B 3 0 760733 2524.05 1561 1526 300.8
B 15 204 322233 1066.22 1561 1526 300.8
C 9 144 409015 1145.34 1515 1518 355.8
C 13 61 12746 31.56 1515 1518 355.8
C 8 128 7643 17.22 1515 1518 355.8
D 2 232 925883 2533.45 1506 1457 364.9
D 2 32 107959 291.87 1506 1457 364.9
D 12 233 71376 191.62 1506 1457 364.9

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