ASTROSAT CZTI

Data Quality Report

Orbit 30451

Creation date: 2024-06-27T20:15:24.796098
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/AS1A10_121T02_9000004378_30451cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30451cztM0_level2_quad_clean.evt
Size (bytes)646,462,08081,406,080
Size616.5 MB 77.6 MB
Events in quadrant A3,348,709517,890
Events in quadrant B5,379,231515,517
Events in quadrant C5,614,841476,912
Events in quadrant D4,785,866490,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140051
B0204451
C0208971
D0183891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650741.112782%
B66501081.624060%
C66516249.382048%
D66512663.999399%

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 7680 6651 7 7 0.09% 0.11%
B 7680 6651 3 3 0.04% 0.05%
C 7681 6652 416 416 5.42% 6.25%
D 7681 6652 224 224 2.92% 3.37%

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 12 96 36682 210.41 855 837 170.4
A 8 192 14111 77.92 855 837 170.4
A 13 254 11613 63.26 855 837 170.4
B 6 159 1838225 11433.64 838 818 160.7
B 0 229 229527 1423.19 838 818 160.7
B 12 111 19654 117.21 838 818 160.7
C 3 233 2337776 12664.61 790 797 184.5
C 14 238 135543 730.22 790 797 184.5
C 10 22 27755 146.09 790 797 184.5
D 13 104 1338260 6321.51 812 798 211.6
D 7 238 130633 613.67 812 798 211.6
D 8 195 123329 579.14 812 798 211.6

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