ASTROSAT CZTI

Data Quality Report

Orbit 20181029_T03_024T01_9000002472_level2

Creation date: 2018-11-01T11:54:23.993809
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_024T01_9000002472cztM0_level2_bc.evt modeM0/AS1T03_024T01_9000002472cztM0_level2_quad_clean.evt
Size (bytes)7,411,668,4801,712,335,680
Size6.9 GB 1.6 GB
Events in quadrant A46,756,70411,237,355
Events in quadrant B33,183,43211,611,122
Events in quadrant C31,444,07011,209,420
Events in quadrant D104,339,2968,993,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01790
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03509050
B02898970
C02870430
D06024360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026140
B026160
C026160
D026160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12850495697.446461%
B12848423831.854706%
C12850727122.110391%
D1284313983331.015098%

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 146787 128616 677 677 0.46% 0.53%
B 146787 128600 66 66 0.04% 0.05%
C 146787 128632 126 126 0.09% 0.10%
D 146787 128448 5469 5469 3.73% 4.26%

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 15 174 17325053 11140.72 7031 6907 1554.5
A 12 96 949688 606.49 7031 6907 1554.5
A 9 143 880664 562.09 7031 6907 1554.5
B 15 35 1605641 1155.16 7283 7154 1383.8
B 0 229 663057 473.99 7283 7154 1383.8
B 5 236 623200 445.19 7283 7154 1383.8
C 3 233 2408728 1466.01 6987 7003 1638.3
C 0 207 1775047 1079.21 6987 7003 1638.3
C 7 247 355103 212.48 6987 7003 1638.3
D 1 52 50454843 35392.62 5952 5755 1425.4
D 2 16 24673883 17305.96 5952 5755 1425.4
D 5 222 3290195 2304.2 5952 5755 1425.4

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