ASTROSAT CZTI

Data Quality Report

Orbit 20180529_A04_201T03_9000002128_level2

Creation date: 2021-08-28T19:24:48.713178
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/AS1A04_201T03_9000002128cztM0_level2_bc.evt modeM0/AS1A04_201T03_9000002128cztM0_level2_quad_clean.evt
Size (bytes)1,471,599,360507,545,280
Size1.4 GB 484.0 MB
Events in quadrant A8,714,3423,230,674
Events in quadrant B9,391,6213,261,585
Events in quadrant C12,032,7663,149,238
Events in quadrant D11,777,7973,062,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0817240
B0850970
C0943550
D0942470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07940
B07940
C07940
D07940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A388457121.832926%
B388459252.381259%
C388459602.471361%
D388459862.538293%

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 49808 38844 1 1 0.00% 0.00%
B 49808 38841 3 3 0.01% 0.01%
C 49808 38843 25 25 0.05% 0.06%
D 49808 38843 28 28 0.06% 0.07%

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 12 189 390299 855.71 2079 2035 453.7
A 8 15 237759 519.52 2079 2035 453.7
A 11 29 36681 76.36 2079 2035 453.7
B 0 189 222783 570.86 2093 2045 386.7
B 0 229 219944 563.52 2093 2045 386.7
B 0 182 210890 540.1 2093 2045 386.7
C 3 233 3709669 8445.39 2014 1988 439.0
C 0 207 415526 941.96 2014 1988 439.0
C 10 22 16131 32.22 2014 1988 439.0
D 13 122 1909149 4000.17 2016 1957 476.8
D 2 120 795060 1663.47 2016 1957 476.8
D 10 199 242584 504.69 2016 1957 476.8

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