ASTROSAT CZTI

Data Quality Report

Orbit 31805

Creation date: 2024-06-27T20:32:57.471437
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/AS1T04_041T01_9000004642_31805cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31805cztM0_level2_quad_clean.evt
Size (bytes)696,597,120102,196,800
Size664.3 MB 97.5 MB
Events in quadrant A6,400,716644,320
Events in quadrant B5,388,921687,697
Events in quadrant C4,406,036627,116
Events in quadrant D4,429,233649,912

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237268
B0212752
C0176722
D0178662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6966105215.101924%
B69661341.923629%
C6966126418.145277%
D6966711.019236%

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 7621 6967 759 759 9.96% 10.89%
B 7621 6967 13 13 0.17% 0.19%
C 7621 6967 62 62 0.81% 0.89%
D 7621 6967 11 11 0.14% 0.16%

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 3197657 19228.84 828 813 166.3
A 13 254 11248 62.77 828 813 166.3
A 13 6 8607 46.88 828 813 166.3
B 6 159 1877963 11234.26 869 849 167.1
B 10 245 61971 365.81 869 849 167.1
B 15 33 27396 158.88 869 849 167.1
C 0 10 448952 2445.58 778 784 183.3
C 14 238 404556 2203.31 778 784 183.3
C 14 254 400837 2183.02 778 784 183.3
D 8 195 1003049 4801.15 859 837 208.7
D 12 227 58152 274.57 859 837 208.7
D 12 233 54794 258.48 859 837 208.7

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