ASTROSAT CZTI

Data Quality Report

Orbit 53973

Creation date: 2025-09-19T21:30:12.960799
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/AS1A14_041T01_9000006510_53973cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53973cztM0_level2_quad_clean.evt
Size (bytes)1,767,098,880247,141,440
Size1.6 GB 235.7 MB
Events in quadrant A11,140,8581,715,573
Events in quadrant B9,412,1611,935,271
Events in quadrant C16,407,8761,420,121
Events in quadrant D26,946,6701,070,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469525
B0420508
C0626372
D09365333

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194639554.906746%
B194625392.769500%
C19466279914.378917%
D19461613031.498895%

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 20585 19466 443 443 2.15% 2.28%
B 20586 19466 98 98 0.48% 0.50%
C 20586 19468 2319 2319 11.26% 11.91%
D 20585 19464 5177 5177 25.15% 26.60%

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 15 174 838285 1641.48 2058 1999 509.5
A 0 8 622454 1217.84 2058 1999 509.5
A 14 248 394416 770.24 2058 1999 509.5
B 5 185 217743 495.65 2064 1993 435.3
B 0 213 192608 437.91 2064 1993 435.3
B 5 250 188003 427.33 2064 1993 435.3
C 1 241 6563729 12540.14 1903 1884 523.3
C 12 249 674451 1285.32 1903 1884 523.3
C 12 252 485721 924.65 1903 1884 523.3
D 8 176 13550476 28121.75 1680 1607 481.8
D 6 239 1612923 3344.41 1680 1607 481.8
D 10 172 1414488 2932.55 1680 1607 481.8

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