ASTROSAT CZTI

Data Quality Report

Orbit 20210911_A10_057T01_9000004692_level2

Creation date: 2021-10-20T13:38:52.022831
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_057T01_9000004692cztM0_level2_bc.evt modeM0/AS1A10_057T01_9000004692cztM0_level2_quad_clean.evt
Size (bytes)8,398,428,4802,196,956,160
Size7.8 GB 2.0 GB
Events in quadrant A35,496,37914,268,386
Events in quadrant B85,771,61614,300,818
Events in quadrant C37,854,27213,482,661
Events in quadrant D84,272,74113,445,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03393020
B05155930
C03790530
D05056000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032820
B032820
C032820
D032820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16119619431.205365%
B16119664253.985831%
C1611962138213.264597%
D161196105676.555374%

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 186831 161206 0 0 0.00% 0.00%
B 186831 161195 189 189 0.10% 0.12%
C 186831 161122 24 24 0.01% 0.01%
D 186831 161185 924 924 0.49% 0.57%

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 885559 465.22 8772 8635 1885.0
A 13 254 301341 155.28 8772 8635 1885.0
A 13 6 260062 133.38 8772 8635 1885.0
B 6 159 43770356 26328.23 8786 8579 1662.2
B 5 172 3071363 1842.65 8786 8579 1662.2
B 0 229 1165533 696.05 8786 8579 1662.2
C 3 233 2263649 1186.84 8059 8058 1900.5
C 14 254 2103034 1102.33 8059 8058 1900.5
C 0 10 960960 501.4 8059 8058 1900.5
D 8 195 21694142 11055.13 8501 8228 1961.6
D 5 172 13542859 6899.74 8501 8228 1961.6
D 2 250 4742564 2413.49 8501 8228 1961.6

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