ASTROSAT CZTI

Data Quality Report

Orbit 16318

Creation date: 2024-06-27T17:20:58.251701
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_096T04_9000002406_16318cztM0_level2.evt modeM0/AS1A05_096T04_9000002406_16318cztM0_level2_quad_clean.evt
Size (bytes)526,861,440109,333,440
Size502.5 MB 104.3 MB
Events in quadrant A3,646,576695,559
Events in quadrant B3,994,689700,430
Events in quadrant C3,775,758690,522
Events in quadrant D4,009,337682,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161522
B0168741
C0162131
D0173121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77971531.962293%
B77972322.975503%
C77971992.552264%
D77971872.398358%

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 8088 7799 0 0 0.00% 0.00%
B 8088 7799 19 19 0.23% 0.24%
C 8088 7799 0 0 0.00% 0.00%
D 8088 7799 46 46 0.57% 0.59%

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 15 174 37392 193.2 936 914 188.8
A 0 226 8325 39.25 936 914 188.8
A 12 194 7002 32.24 936 914 188.8
B 3 112 117678 657.37 935 910 177.6
B 0 198 62456 346.49 935 910 177.6
B 4 173 45986 253.76 935 910 177.6
C 14 238 140118 667.89 905 909 208.4
C 3 233 98719 469.27 905 909 208.4
C 0 207 7849 33.3 905 909 208.4
D 12 110 327641 1331.93 912 894 245.3
D 2 122 84914 342.49 912 894 245.3
D 1 52 35440 140.82 912 894 245.3

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