ASTROSAT CZTI

Data Quality Report

Orbit 18385

Creation date: 2024-06-27T17:49:08.896879
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/AS1A06_006T01_9000002724_18385cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18385cztM0_level2_quad_clean.evt
Size (bytes)508,204,80079,945,920
Size484.7 MB 76.2 MB
Events in quadrant A3,361,367493,075
Events in quadrant B3,469,969499,840
Events in quadrant C3,599,098485,709
Events in quadrant D4,502,477471,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141232
B0143152
C0147662
D0177082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67511341.984891%
B67511382.044142%
C67501802.666667%
D67503134.637037%

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 7611 6752 12 12 0.16% 0.18%
B 7611 6752 3 3 0.04% 0.04%
C 7610 6751 18 18 0.24% 0.27%
D 7610 6751 154 154 2.02% 2.28%

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 15 174 65407 373.4 854 835 172.9
A 4 2 14211 77.35 854 835 172.9
A 0 226 7433 38.15 854 835 172.9
B 10 245 51787 312.65 854 833 163.0
B 3 64 31684 189.3 854 833 163.0
B 12 111 18914 110.94 854 833 163.0
C 0 207 209332 1090.31 821 826 191.2
C 14 238 126734 658.39 821 826 191.2
C 3 233 59061 304.52 821 826 191.2
D 1 52 1043238 5157.01 825 801 202.1
D 8 230 232019 1143.85 825 801 202.1
D 2 33 35395 171.14 825 801 202.1

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