ASTROSAT CZTI

Data Quality Report

Orbit 30485

Creation date: 2024-06-27T20:15:52.230605
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/AS1A10_058T04_9000004382_30485cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30485cztM0_level2_quad_clean.evt
Size (bytes)593,781,120124,980,480
Size566.3 MB 119.2 MB
Events in quadrant A3,635,421869,823
Events in quadrant B5,530,452857,411
Events in quadrant C3,714,051803,103
Events in quadrant D4,655,163793,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150192
B0208572
C0152392
D0182322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621951.434829%
B66211902.869657%
C66211291.948346%
D66211722.597795%

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 7906 6622 5 5 0.06% 0.08%
B 7906 6622 28 28 0.35% 0.42%
C 7906 6622 8 8 0.10% 0.12%
D 7906 6622 131 131 1.66% 1.98%

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 0 13 39917 215.52 919 906 181.0
A 12 96 27276 145.68 919 906 181.0
A 4 2 16514 86.23 919 906 181.0
B 6 159 1786366 10806.95 889 871 165.2
B 0 229 142191 855.36 889 871 165.2
B 4 171 43962 260.81 889 871 165.2
C 3 233 216500 1113.81 846 854 193.6
C 14 238 139832 717.82 846 854 193.6
C 10 22 29468 147.79 846 854 193.6
D 8 195 295726 1465.34 870 853 201.2
D 12 218 295330 1463.37 870 853 201.2
D 12 233 284571 1409.9 870 853 201.2

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