ASTROSAT CZTI

Data Quality Report

Orbit 24900

Creation date: 2024-06-27T19:11:13.327132
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/AS1A08_003T13_9000003646_24900cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24900cztM0_level2_quad_clean.evt
Size (bytes)578,234,88092,471,040
Size551.4 MB 88.2 MB
Events in quadrant A4,075,000573,537
Events in quadrant B4,025,055584,163
Events in quadrant C4,051,110553,217
Events in quadrant D4,824,669539,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169402
B0166742
C0166822
D0191943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79012763.493229%
B79022673.378891%
C79022613.302961%
D79013634.594355%

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 9126 7904 26 26 0.28% 0.33%
B 9127 7905 0 0 0.00% 0.00%
C 9127 7905 6 6 0.07% 0.08%
D 9126 7904 158 158 1.73% 2.00%

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 6 16 159234 770.49 1014 991 205.4
A 13 254 11788 52.57 1014 991 205.4
A 3 137 9817 42.97 1014 991 205.4
B 7 202 26094 127.97 1009 983 196.2
B 12 111 24997 122.38 1009 983 196.2
B 11 111 22651 110.42 1009 983 196.2
C 14 238 152940 667.14 969 976 227.8
C 0 10 46384 199.35 969 976 227.8
C 7 247 36168 154.5 969 976 227.8
D 1 52 691318 2884.35 974 945 239.4
D 8 195 383021 1596.3 974 945 239.4
D 13 174 66592 274.27 974 945 239.4

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