ASTROSAT CZTI

Data Quality Report

Orbit 38418

Creation date: 2024-06-27T21:52:29.218950
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/AS1A12_018T01_9000005386_38418cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38418cztM0_level2_quad_clean.evt
Size (bytes)451,082,88097,145,280
Size430.2 MB 92.6 MB
Events in quadrant A3,255,412685,475
Events in quadrant B2,839,364705,282
Events in quadrant C2,773,224663,141
Events in quadrant D7,417,330516,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128853
B0117102
C0112052
D0257082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309991.864758%
B5309150.282539%
C5309320.602750%
D5309120722.734978%

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 7371 5310 71 71 0.96% 1.34%
B 7371 5310 7 7 0.09% 0.13%
C 7371 5310 24 24 0.33% 0.45%
D 7371 5310 1172 1172 15.90% 22.07%

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 416224 3305.59 631 619 125.7
A 13 248 289196 2295.25 631 619 125.7
A 9 143 41496 325.12 631 619 125.7
B 0 183 179352 1528.85 626 610 116.9
B 0 155 64762 548.71 626 610 116.9
B 4 232 56820 480.78 626 610 116.9
C 15 214 229038 1610.81 616 620 141.8
C 14 254 107629 754.63 616 620 141.8
C 0 10 26485 182.4 616 620 141.8
D 12 235 3968375 27968.02 585 569 141.9
D 2 250 457661 3221.92 585 569 141.9
D 12 233 260891 1834.94 585 569 141.9

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