ASTROSAT CZTI

Data Quality Report

Orbit 21184

Creation date: 2024-06-27T18:24:39.521280
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_002T01_9000003134_21184cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21184cztM0_level2_quad_clean.evt
Size (bytes)1,051,225,920152,619,840
Size1002.5 MB 145.5 MB
Events in quadrant A5,955,1941,009,064
Events in quadrant B6,128,7751,024,616
Events in quadrant C6,181,295988,938
Events in quadrant D12,729,398738,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02542
B02542
C02542
D02542

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025787205
B026092213
C026230195
D046489270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124401421.141479%
B124421621.302041%
C124422141.719981%
D12439358228.796527%

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 13883 12448 4 4 0.03% 0.03%
B 13884 12449 13 13 0.09% 0.10%
C 13884 12447 11 11 0.08% 0.09%
D 13884 12448 1922 1922 13.84% 15.44%

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 5 16 68229 220.25 1499 1470 303.1
A 13 252 64527 208.03 1499 1470 303.1
A 8 6 29900 93.79 1499 1470 303.1
B 0 230 50770 171.51 1492 1454 287.5
B 0 197 45538 153.32 1492 1454 287.5
B 0 190 44489 149.67 1492 1454 287.5
C 3 233 307126 909.3 1434 1441 336.2
C 14 238 221387 654.26 1434 1441 336.2
C 10 91 61656 179.12 1434 1441 336.2
D 7 238 7813621 28063.45 1134 1101 278.4
D 1 20 380575 1363.11 1134 1101 278.4
D 1 52 62710 221.31 1134 1101 278.4

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