ASTROSAT CZTI

Data Quality Report

Orbit 10268

Creation date: 2024-06-27T15:57:05.284905
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/AS1A03_052T01_9000001480_10268cztM0_level2.evt modeM0/AS1A03_052T01_9000001480_10268cztM0_level2_quad_clean.evt
Size (bytes)526,224,96099,895,680
Size501.8 MB 95.3 MB
Events in quadrant A3,630,708639,925
Events in quadrant B3,815,392645,999
Events in quadrant C3,340,670630,322
Events in quadrant D4,651,484597,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01502
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01548027
B01614120
C01518720
D01895338

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7342450.612912%
B7347971.320267%
C7346210.285870%
D73401441.961853%

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 7564 7355 1 1 0.01% 0.01%
B 7564 7355 23 23 0.30% 0.31%
C 7564 7355 0 0 0.00% 0.00%
D 7564 7355 110 110 1.45% 1.50%

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 8 15 169252 921.05 891 872 182.8
A 3 1 14718 75.74 891 872 182.8
A 8 5 10773 54.16 891 872 182.8
B 4 239 166388 962.07 889 868 172.0
B 11 51 73014 419.34 889 868 172.0
B 0 214 46457 264.98 889 868 172.0
C 13 61 6472 28.09 856 859 199.8
C 14 67 3537 13.4 856 859 199.8
C 3 202 2210 6.76 856 859 199.8
D 8 195 474432 2296.54 849 825 206.2
D 1 52 287500 1390.1 849 825 206.2
D 2 16 249582 1206.23 849 825 206.2

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