ASTROSAT CZTI

Data Quality Report

Orbit 30489

Creation date: 2024-06-27T20:15:56.243069
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/AS1A10_058T04_9000004382_30489cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30489cztM0_level2_quad_clean.evt
Size (bytes)770,892,480112,008,960
Size735.2 MB 106.8 MB
Events in quadrant A4,021,943791,315
Events in quadrant B6,431,897785,056
Events in quadrant C4,367,063744,791
Events in quadrant D7,980,722510,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171702
B0248842
C0180512
D0292792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8058861.067262%
B80592282.829135%
C80592132.643008%
D8059233128.924184%

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 8693 8060 23 23 0.26% 0.29%
B 8694 8061 10 10 0.12% 0.12%
C 8694 8061 47 47 0.54% 0.58%
D 8694 8060 1311 1311 15.08% 16.27%

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 0 13 135815 665.49 999 978 202.6
A 8 192 24595 116.56 999 978 202.6
A 13 254 16147 74.87 999 978 202.6
B 6 159 2334012 12436.45 985 961 187.6
B 0 229 117544 621.45 985 961 187.6
B 5 172 41504 216.12 985 961 187.6
C 3 233 356566 1615.77 940 945 220.1
C 10 22 158651 716.54 940 945 220.1
C 14 238 150909 681.37 940 945 220.1
D 12 218 3994415 22480.28 736 716 177.7
D 8 195 309513 1738.2 736 716 177.7
D 12 250 221643 1243.58 736 716 177.7

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