ASTROSAT CZTI

Data Quality Report

Orbit 32820

Creation date: 2024-06-27T20:42:23.847730
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/AS1A11_044T01_9000004732_32820cztM0_level2.evt modeM0/AS1A11_044T01_9000004732_32820cztM0_level2_quad_clean.evt
Size (bytes)565,692,480102,303,360
Size539.5 MB 97.6 MB
Events in quadrant A2,940,900688,098
Events in quadrant B3,281,672694,542
Events in quadrant C2,777,009707,308
Events in quadrant D7,757,259619,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123133
B0131752
C0118442
D0269522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5543561.010283%
B55431713.084972%
C5543460.829876%
D554392516.687714%

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 6886 5544 35 35 0.51% 0.63%
B 6886 5544 109 109 1.58% 1.97%
C 6886 5544 31 31 0.45% 0.56%
D 6886 5544 824 824 11.97% 14.86%

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 14 238 401606 3167.37 633 619 126.6
A 7 16 26230 202.3 633 619 126.6
A 9 143 23754 182.74 633 619 126.6
B 5 172 477598 3986.77 632 618 119.6
B 0 219 137805 1146.66 632 618 119.6
B 0 229 56249 464.98 632 618 119.6
C 0 10 125753 869.82 621 627 143.9
C 3 233 99821 689.56 621 627 143.9
C 14 67 38452 262.94 621 627 143.9
D 8 195 2965515 20279.44 590 577 146.2
D 2 250 570098 3895.38 590 577 146.2
D 10 203 522558 3570.22 590 577 146.2

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