ASTROSAT CZTI

Data Quality Report

Orbit 48156

Creation date: 2024-08-24T10:45:30.661286
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/AS1C09_009T01_9000006406_48156cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48156cztM0_level2_quad_clean.evt
Size (bytes)428,443,20090,550,080
Size408.6 MB 86.4 MB
Events in quadrant A7,353,207785,315
Events in quadrant B1,156,73546,850
Events in quadrant C3,195,248765,988
Events in quadrant D3,654,378698,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261341
B069791
C0135832
D0149741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63443064.823455%
B63446344100.000000%
C6343981.545010%
D63441432.254098%

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 7514 6345 53 53 0.71% 0.84%
B 7513 6324 6 6 0.08% 0.09%
C 7513 6344 28 28 0.37% 0.44%
D 7514 6345 69 69 0.92% 1.09%

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 4323009 27107.87 771 757 159.4
A 13 248 18074 108.61 771 757 159.4
A 0 243 17333 103.96 771 757 159.4
B 2 177 872281 75818.66 48 47 11.5
B 5 32 44029 3823.12 48 47 11.5
B 0 200 10771 932.18 48 47 11.5
C 14 254 125520 695.85 761 768 179.3
C 12 2 64614 356.12 761 768 179.3
C 1 3 13192 69.3 761 768 179.3
D 7 67 319260 1651.45 761 737 192.9
D 12 2 68390 350.76 761 737 192.9
D 12 233 56826 290.8 761 737 192.9

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