ASTROSAT CZTI

Data Quality Report

Orbit 30830

Creation date: 2024-06-27T20:20:06.542877
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_071T38_9000004454_30830cztM0_level2.evt modeM0/AS1A10_071T38_9000004454_30830cztM0_level2_quad_clean.evt
Size (bytes)625,464,00086,696,640
Size596.5 MB 82.7 MB
Events in quadrant A3,217,304584,036
Events in quadrant B5,466,041586,864
Events in quadrant C3,587,751535,913
Events in quadrant D6,248,478481,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132762
B0203592
C0144022
D0230514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6259280.447356%
B62592073.307238%
C62592944.697236%
D625875011.984660%

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 7504 6260 0 0 0.00% 0.00%
B 7503 6258 103 103 1.37% 1.65%
C 7504 6259 41 41 0.55% 0.66%
D 7503 6259 621 621 8.28% 9.92%

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 13 254 12435 69.86 833 819 166.3
A 3 137 7778 41.85 833 819 166.3
A 0 226 6993 37.13 833 819 166.3
B 6 159 1764150 11349.54 825 806 155.4
B 5 255 358720 2303.67 825 806 155.4
B 0 230 28921 180.96 825 806 155.4
C 14 238 180758 997.65 776 783 180.4
C 0 10 177910 981.87 776 783 180.4
C 3 233 94330 518.56 776 783 180.4
D 12 218 1675463 9522.24 743 727 175.9
D 8 195 1402945 7972.76 743 727 175.9
D 1 52 128403 725.94 743 727 175.9

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