ASTROSAT CZTI

Data Quality Report

Orbit 48587

Creation date: 2024-09-22T02:36:27.218214
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/AS1A13_037T01_9000006436_48587cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48587cztM0_level2_quad_clean.evt
Size (bytes)490,020,48096,664,320
Size467.3 MB 92.2 MB
Events in quadrant A6,449,634646,438
Events in quadrant B3,522,962672,035
Events in quadrant C2,615,828654,762
Events in quadrant D5,057,760510,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234821
B0150361
C0128461
D0198811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63442243.530895%
B63451552.442868%
C6345300.472813%
D6345100815.886525%

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 7254 6345 41 41 0.57% 0.65%
B 7255 6346 92 92 1.27% 1.45%
C 7255 6346 0 0 0.00% 0.00%
D 7255 6346 748 748 10.31% 11.79%

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 3871982 27896.45 664 647 138.8
A 13 254 12161 82.97 664 647 138.8
A 13 248 9318 62.48 664 647 138.8
B 5 255 488996 3694.53 666 644 132.2
B 12 16 366489 2767.73 666 644 132.2
B 0 197 20378 149.29 666 644 132.2
C 14 254 11790 70.48 667 670 157.8
C 13 61 4385 23.55 667 670 157.8
C 3 233 3489 17.87 667 670 157.8
D 2 165 2488448 15800.96 628 609 157.4
D 13 171 94096 593.76 628 609 157.4
D 2 234 31952 199.07 628 609 157.4

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