ASTROSAT CZTI

Data Quality Report

Orbit 15102

Creation date: 2024-06-27T17:03:46.449438
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/AS1G08_028T01_9000002220_15102cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15102cztM0_level2_quad_clean.evt
Size (bytes)663,048,00082,059,840
Size632.3 MB 78.3 MB
Events in quadrant A3,928,667492,814
Events in quadrant B7,167,857494,129
Events in quadrant C4,599,749472,731
Events in quadrant D3,839,180466,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169423
B0268132
C0184492
D0171562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80383824.752426%
B8038140817.516795%
C80384205.225180%
D80383123.881563%

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 8379 8040 0 0 0.00% 0.00%
B 8379 8040 604 604 7.21% 7.51%
C 8379 8039 65 65 0.78% 0.81%
D 8379 8039 20 20 0.24% 0.25%

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 0 226 8776 37.14 1020 994 209.5
A 12 194 7634 31.69 1020 994 209.5
A 3 137 7575 31.41 1020 994 209.5
B 10 245 3016575 15766.94 970 943 191.3
B 3 64 318660 1661.15 970 943 191.3
B 0 229 37187 189.5 970 943 191.3
C 3 233 376168 1617.48 983 984 232.0
C 4 254 375484 1614.53 983 984 232.0
C 3 9 8693 33.23 983 984 232.0
D 10 70 59600 243.33 986 955 241.0
D 13 104 54824 223.52 986 955 241.0
D 2 234 33024 133.06 986 955 241.0

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