ASTROSAT CZTI

Data Quality Report

Orbit 47962

Creation date: 2024-08-10T22:31:44.515409
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_062T02_9000006384_47962cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47962cztM0_level2_quad_clean.evt
Size (bytes)1,274,011,200288,734,400
Size1.2 GB 275.4 MB
Events in quadrant A19,930,9101,835,904
Events in quadrant B8,655,1431,962,952
Events in quadrant C8,285,6871,914,954
Events in quadrant D8,843,5701,739,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0739715
B0387272
C0386832
D0398622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186829765.224280%
B186834342.322967%
C186831901.016967%
D186833071.643205%

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 19753 18683 234 234 1.18% 1.25%
B 19753 18683 5 5 0.03% 0.03%
C 19753 18683 8 8 0.04% 0.04%
D 19753 18683 84 84 0.43% 0.45%

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 10636186 24581.7 2071 2027 432.6
A 0 31 917443 2116.06 2071 2027 432.6
A 14 235 357796 822.39 2071 2027 432.6
B 7 221 113756 268.65 2088 2020 415.9
B 0 198 97386 229.29 2088 2020 415.9
B 15 19 86100 202.16 2088 2020 415.9
C 14 254 120466 243.64 2065 2078 485.9
C 12 2 55630 110.21 2065 2078 485.9
C 12 250 20191 37.28 2065 2078 485.9
D 11 224 207793 397.78 2070 2003 517.3
D 2 37 170640 325.97 2070 2003 517.3
D 15 127 119149 226.44 2070 2003 517.3

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