ASTROSAT CZTI

Data Quality Report

Orbit 46086

Creation date: 2024-06-27T23:19:00.854628
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/AS1A13_077T01_9000006168_46086cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46086cztM0_level2_quad_clean.evt
Size (bytes)483,240,960114,039,360
Size460.9 MB 108.8 MB
Events in quadrant A6,171,407743,556
Events in quadrant B3,507,239778,569
Events in quadrant C3,391,406758,348
Events in quadrant D4,271,190681,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229722
B0149982
C0152162
D0175882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70462293.250071%
B7046871.234743%
C7046280.397389%
D70462062.923645%

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 7661 7047 14 14 0.18% 0.20%
B 7661 7047 4 4 0.05% 0.06%
C 7661 7047 17 17 0.22% 0.24%
D 7661 7047 158 158 2.06% 2.24%

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 10 83 3091883 18527.54 792 773 166.8
A 13 254 11293 63.05 792 773 166.8
A 7 3 10232 56.7 792 773 166.8
B 0 190 152019 935.33 801 775 161.7
B 5 63 93945 576.18 801 775 161.7
B 15 201 32207 194.38 801 775 161.7
C 3 233 308151 1646.88 789 793 186.6
C 12 2 10465 51.82 789 793 186.6
C 13 61 5215 23.69 789 793 186.6
D 1 52 426780 2170.69 778 755 196.3
D 5 235 397717 2022.61 778 755 196.3
D 13 249 182097 923.98 778 755 196.3

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