ASTROSAT CZTI

Data Quality Report

Orbit 47679

Creation date: 2024-07-22T18:41:18.622873
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/AS1A13_082T01_9000006342_47679cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47679cztM0_level2_quad_clean.evt
Size (bytes)457,574,400110,954,880
Size436.4 MB 105.8 MB
Events in quadrant A6,919,856734,350
Events in quadrant B3,284,606759,565
Events in quadrant C2,991,740731,656
Events in quadrant D3,232,510676,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259881
B0139601
C0134991
D0139081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65602623.993902%
B65601412.149390%
C6560500.762195%
D6560781.189024%

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 7675 6561 15 15 0.20% 0.23%
B 7675 6560 16 16 0.21% 0.24%
C 7675 6561 4 4 0.05% 0.06%
D 7675 6561 10 10 0.13% 0.15%

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 10 83 3702029 22803.17 770 754 162.3
A 9 191 154635 948.04 770 754 162.3
A 13 248 73855 450.37 770 754 162.3
B 0 200 126566 827.8 767 741 152.0
B 0 190 45093 291.79 767 741 152.0
B 4 171 24450 155.98 767 741 152.0
C 14 254 21719 118.05 754 760 177.5
C 12 249 13521 71.88 754 760 177.5
C 12 250 13151 69.79 754 760 177.5
D 2 165 83829 437.68 764 742 189.8
D 5 32 45068 233.5 764 742 189.8
D 8 176 44515 230.59 764 742 189.8

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