ASTROSAT CZTI

Data Quality Report

Orbit 41994

Creation date: 2024-06-27T22:35:29.151551
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/AS1T05_132T01_9000005730_41994cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_41994cztM0_level2_quad_clean.evt
Size (bytes)400,919,04087,906,240
Size382.3 MB 83.8 MB
Events in quadrant A2,767,138585,732
Events in quadrant B2,438,517606,363
Events in quadrant C2,409,093587,714
Events in quadrant D6,818,040513,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114792
B0109852
C0105652
D0239972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5252100.190404%
B5252220.418888%
C525250.095202%
D52523797.216299%

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 7134 5253 5 5 0.07% 0.10%
B 7134 5253 18 18 0.25% 0.34%
C 7134 5253 1 1 0.01% 0.02%
D 7134 5253 348 348 4.88% 6.62%

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 532928 4613.77 564 552 115.4
A 2 79 40895 349.63 564 552 115.4
A 3 137 6222 49.14 564 552 115.4
B 5 255 111992 1018.06 566 549 109.5
B 0 190 68023 616.39 566 549 109.5
B 0 156 27982 250.61 566 549 109.5
C 15 214 218189 1678.86 558 561 129.6
C 12 249 5269 36.32 558 561 129.6
C 8 229 5107 35.07 558 561 129.6
D 1 52 4057337 30889.24 538 524 131.3
D 13 249 204755 1555.05 538 524 131.3
D 2 249 179447 1362.35 538 524 131.3

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