ASTROSAT CZTI

Data Quality Report

Orbit 38008

Creation date: 2024-06-27T21:47:15.367134
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/AS1A11_082T01_9000005356_38008cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38008cztM0_level2_quad_clean.evt
Size (bytes)390,430,08092,626,560
Size372.3 MB 88.3 MB
Events in quadrant A3,272,745629,047
Events in quadrant B3,916,732609,365
Events in quadrant C2,773,855624,579
Events in quadrant D4,059,831555,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133783
B0152952
C0116152
D0158532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5520370.670290%
B55204207.608696%
C5520140.253623%
D55202304.166667%

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 7162 5521 17 17 0.24% 0.31%
B 7162 5521 325 325 4.54% 5.89%
C 7162 5521 7 7 0.10% 0.13%
D 7162 5521 202 202 2.82% 3.66%

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 10 83 380219 3007.54 622 610 126.2
A 12 16 312215 2468.76 622 610 126.2
A 9 143 68252 535.91 622 610 126.2
B 5 184 855052 7405.28 607 590 115.4
B 5 200 271727 2349.84 607 590 115.4
B 5 255 224633 1941.69 607 590 115.4
C 15 214 230941 1611.83 612 615 142.9
C 1 23 66310 459.74 612 615 142.9
C 14 254 36599 251.82 612 615 142.9
D 12 227 571164 3879.43 598 581 147.1
D 7 223 276967 1879.16 598 581 147.1
D 13 171 244752 1660.13 598 581 147.1

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