ASTROSAT CZTI

Data Quality Report

Orbit 30612

Creation date: 2024-06-27T20:17:40.233053
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_021T09_9000004410_30612cztM0_level2.evt modeM0/AS1A10_021T09_9000004410_30612cztM0_level2_quad_clean.evt
Size (bytes)681,932,16068,644,800
Size650.3 MB 65.5 MB
Events in quadrant A4,023,606426,981
Events in quadrant B5,391,164420,852
Events in quadrant C3,968,047400,569
Events in quadrant D6,824,782370,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160482
B0203384
C0158542
D0250022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881492.261688%
B65871061.609230%
C65872503.795354%
D65875468.289054%

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 7778 6589 75 75 0.96% 1.14%
B 7777 6588 8 8 0.10% 0.12%
C 7777 6587 60 60 0.77% 0.91%
D 7777 6588 489 489 6.29% 7.42%

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 13 586579 3357.13 885 871 174.5
A 8 192 21192 116.47 885 871 174.5
A 13 254 11932 63.4 885 871 174.5
B 6 159 1823723 10999.68 878 860 165.7
B 0 229 59273 352.48 878 860 165.7
B 4 171 30750 180.36 878 860 165.7
C 15 208 324440 1661.43 834 841 194.8
C 0 10 172115 879.36 834 841 194.8
C 14 238 147208 751.48 834 841 194.8
D 8 195 2581446 13121.98 828 810 196.7
D 12 218 562494 2856.04 828 810 196.7
D 1 52 326099 1654.02 828 810 196.7

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