ASTROSAT CZTI

Data Quality Report

Orbit 14406

Creation date: 2024-06-27T16:54:42.886224
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_023T02_9000002124_14406cztM0_level2.evt modeM0/AS1A04_023T02_9000002124_14406cztM0_level2_quad_clean.evt
Size (bytes)613,537,92089,815,680
Size585.1 MB 85.7 MB
Events in quadrant A4,097,412548,349
Events in quadrant B4,462,104544,784
Events in quadrant C4,966,484538,235
Events in quadrant D4,505,104524,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173432
B0183611
C0200421
D0187541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81144475.508997%
B81145867.222085%
C81143444.239586%
D81144445.472024%

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 8555 8115 4 4 0.05% 0.05%
B 8555 8115 93 93 1.09% 1.15%
C 8555 8115 5 5 0.06% 0.06%
D 8555 8115 51 51 0.60% 0.63%

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 12 189 107626 506.42 1021 993 210.6
A 4 2 34005 156.78 1021 993 210.6
A 8 15 27866 127.62 1021 993 210.6
B 8 3 196206 994.23 1008 979 196.4
B 0 229 119515 603.67 1008 979 196.4
B 4 173 65313 327.63 1008 979 196.4
C 3 233 1080965 4645.31 994 994 232.5
C 0 207 11539 45.36 994 994 232.5
C 13 61 7147 26.47 994 994 232.5
D 2 120 266862 1108.42 994 966 239.9
D 10 199 200012 829.75 994 966 239.9
D 5 51 58938 241.66 994 966 239.9

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