ASTROSAT CZTI

Data Quality Report

Orbit 15476

Creation date: 2024-06-27T17:09:07.688018
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/AS1T02_082T01_9000002286_15476cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15476cztM0_level2_quad_clean.evt
Size (bytes)495,342,720104,281,920
Size472.4 MB 99.5 MB
Events in quadrant A3,334,980680,067
Events in quadrant B3,620,357682,636
Events in quadrant C3,365,135662,989
Events in quadrant D4,203,117642,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145893
B0152242
C0145532
D0171912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7040290.411932%
B7040851.207386%
C7040570.809659%
D70401632.315341%

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 7691 7042 4 4 0.05% 0.06%
B 7691 7042 21 21 0.27% 0.30%
C 7691 7042 0 0 0.00% 0.00%
D 7691 7042 122 122 1.59% 1.73%

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 13 248 32462 184.16 851 833 171.8
A 9 143 25030 140.88 851 833 171.8
A 0 226 7915 41.23 851 833 171.8
B 0 197 67790 417.51 847 825 160.4
B 3 209 47887 293.42 847 825 160.4
B 10 245 47599 291.62 847 825 160.4
C 14 238 124413 655.68 808 813 188.5
C 3 233 75550 396.47 808 813 188.5
C 10 22 9943 48.43 808 813 188.5
D 12 221 375235 1867.37 815 789 200.5
D 1 52 333049 1656.99 815 789 200.5
D 5 222 144967 719.02 815 789 200.5

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