ASTROSAT CZTI

Data Quality Report

Orbit 32428

Creation date: 2024-06-27T20:40:05.273076
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/AS1A09_108T02_9000004706_32428cztM0_level2.evt modeM0/AS1A09_108T02_9000004706_32428cztM0_level2_quad_clean.evt
Size (bytes)646,323,840106,980,480
Size616.4 MB 102.0 MB
Events in quadrant A3,496,799689,707
Events in quadrant B5,941,599711,028
Events in quadrant C5,172,539665,473
Events in quadrant D4,459,834655,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154693
B0231032
C0203882
D0181632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7450580.778523%
B74501972.644295%
C74503765.046980%
D74501782.389262%

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 8575 7453 0 0 0.00% 0.00%
B 8575 7453 8 8 0.09% 0.11%
C 8575 7453 173 173 2.02% 2.32%
D 8575 7453 104 104 1.21% 1.40%

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 13 254 13759 70.57 903 883 182.5
A 3 137 9468 47.05 903 883 182.5
A 13 6 8239 40.32 903 883 182.5
B 6 159 2085396 11991.12 903 878 173.8
B 4 80 134742 770.05 903 878 173.8
B 0 183 121164 691.94 903 878 173.8
C 3 233 1245796 6069.39 867 870 205.1
C 0 10 263815 1281.94 867 870 205.1
C 14 238 139361 675.19 867 870 205.1
D 8 195 482078 2297.82 872 846 209.4
D 1 47 220862 1050.55 872 846 209.4
D 12 218 182403 866.91 872 846 209.4

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