ASTROSAT CZTI

Data Quality Report

Orbit 20210812_A10_059T01_9000004634_level2

Creation date: 2021-08-13T11:44:15.290684
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_059T01_9000004634cztM0_level2_bc.evt modeM0/AS1A10_059T01_9000004634cztM0_level2_quad_clean.evt
Size (bytes)2,739,700,800510,874,560
Size2.6 GB 487.2 MB
Events in quadrant A22,436,3423,150,379
Events in quadrant B20,952,6593,455,881
Events in quadrant C20,008,2663,192,097
Events in quadrant D17,208,9913,277,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07100
B07100
C07100
D07100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01394670
B01205580
C01205140
D01042090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34835872025.032295%
B3483526047.475240%
C34835567916.302569%
D3483515864.552892%

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 42329 34824 621 621 1.47% 1.78%
B 42329 34834 170 170 0.40% 0.49%
C 42330 34834 757 757 1.79% 2.17%
D 42329 34833 83 83 0.20% 0.24%

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 15353121 38927.78 1825 1802 394.4
A 13 254 56028 137.51 1825 1802 394.4
A 14 238 38597 93.3 1825 1802 394.4
B 6 159 9370173 24491.28 2035 1997 382.5
B 5 172 1999615 5222.39 2035 1997 382.5
B 10 245 949539 2477.16 2035 1997 382.5
C 3 233 7899937 18356.95 1844 1848 430.3
C 0 10 4137249 9611.61 1844 1848 430.3
C 10 22 709658 1645.11 1844 1848 430.3
D 8 195 6205852 13855.62 1992 1940 447.8
D 12 218 1845270 4116.83 1992 1940 447.8
D 12 233 466748 1038.09 1992 1940 447.8

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