ASTROSAT CZTI

Data Quality Report

Orbit 23539

Creation date: 2024-06-27T18:55:54.470039
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/AS1A07_011T01_9000003482_23539cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23539cztM0_level2_quad_clean.evt
Size (bytes)551,013,12097,041,600
Size525.5 MB 92.5 MB
Events in quadrant A3,283,183625,505
Events in quadrant B3,896,745630,756
Events in quadrant C3,314,970607,989
Events in quadrant D5,721,991591,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142031
B0159441
C0142571
D0216941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69381111.599885%
B69391992.867848%
C69391151.657299%
D69395467.868569%

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 7518 6938 2 2 0.03% 0.03%
B 7519 6939 57 57 0.76% 0.82%
C 7519 6939 0 0 0.00% 0.00%
D 7518 6938 468 468 6.23% 6.75%

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 4 2 16444 91.2 845 825 171.3
A 13 254 12878 70.38 845 825 171.3
A 13 252 7995 41.87 845 825 171.3
B 0 189 352005 2228.13 831 813 157.6
B 3 64 180959 1142.93 831 813 157.6
B 4 216 28056 172.84 831 813 157.6
C 14 238 127181 679.05 798 801 186.1
C 9 232 27176 141.72 798 801 186.1
C 7 247 25403 132.19 798 801 186.1
D 1 52 1777642 9146.77 798 773 194.3
D 9 85 683317 3513.52 798 773 194.3
D 12 233 141419 724.0 798 773 194.3

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