ASTROSAT CZTI

Data Quality Report

Orbit 20818

Creation date: 2024-06-27T18:19:54.892956
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/AS1A05_013T01_9000003070_20818cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20818cztM0_level2_quad_clean.evt
Size (bytes)520,873,92099,293,760
Size496.7 MB 94.7 MB
Events in quadrant A3,199,157654,075
Events in quadrant B3,927,200638,148
Events in quadrant C3,701,629624,608
Events in quadrant D4,484,631615,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139671
B0160571
C0153961
D0177384

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809440.646204%
B68101652.422907%
C68101462.143906%
D68091652.423263%

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 7214 6809 0 0 0.00% 0.00%
B 7215 6810 75 75 1.04% 1.10%
C 7215 6811 66 66 0.91% 0.97%
D 7213 6809 116 116 1.61% 1.70%

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 0 226 7133 37.43 832 815 168.8
A 3 137 6713 34.94 832 815 168.8
A 12 194 5957 30.46 832 815 168.8
B 7 220 441864 2876.25 816 797 153.3
B 0 189 67942 437.86 816 797 153.3
B 4 171 61817 397.92 816 797 153.3
C 9 54 521490 2852.29 783 789 182.6
C 14 238 122758 668.12 783 789 182.6
C 13 61 5421 25.37 783 789 182.6
D 1 20 648006 3348.02 798 776 193.3
D 1 52 467780 2415.74 798 776 193.3
D 9 1 236813 1220.98 798 776 193.3

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