ASTROSAT CZTI

Data Quality Report

Orbit 47800

Creation date: 2024-07-30T23:07:53.354428
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_037T05_9000006352_47800cztM0_level2.fits modeM0/AS1A13_037T05_9000006352_47800cztM0_level2_quad_clean.evt
Size (bytes)618,036,480127,900,800
Size589.4 MB 122.0 MB
Events in quadrant A9,134,263822,050
Events in quadrant B3,888,543892,706
Events in quadrant C3,802,965852,826
Events in quadrant D5,436,337752,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334341
B0170191
C0171521
D0217331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79475947.474519%
B79471181.484837%
C7948700.880725%
D79474105.159180%

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 7972 7948 328 328 4.11% 4.13%
B 7972 7948 39 39 0.49% 0.49%
C 7973 7949 51 51 0.64% 0.64%
D 7972 7948 385 385 4.83% 4.84%

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 4361828 22917.98 906 886 190.3
A 14 235 1241864 6521.69 906 886 190.3
A 13 248 21927 110.58 906 886 190.3
B 7 221 122404 676.71 911 885 179.6
B 0 245 100649 555.56 911 885 179.6
B 12 111 23542 126.17 911 885 179.6
C 12 2 246785 1168.02 892 896 210.5
C 14 254 55473 259.25 892 896 210.5
C 1 3 16401 73.65 892 896 210.5
D 2 37 753642 3386.84 886 859 222.3
D 13 171 667286 2998.31 886 859 222.3
D 14 34 169778 759.98 886 859 222.3

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