ASTROSAT CZTI

Data Quality Report

Orbit 20230923_A09_036T17_9000005858_level2

Creation date: 2023-09-26T11:11:30.038476
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/AS1A09_036T17_9000005858cztM0_level2.fits modeM0/AS1A09_036T17_9000005858cztM0_level2_quad_clean.evt
Size (bytes)1,335,726,7201,380,320,640
Size1.2 GB 1.3 GB
Events in quadrant A7,731,2788,016,066
Events in quadrant B7,597,7708,368,146
Events in quadrant C7,922,2867,874,872
Events in quadrant D6,803,9827,154,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04293680
B03593390
C03138560
D03825000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031040
B031040
C031040
D031040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15164288815.856557%
B15164441922.764369%
C1516464190.276301%
D15164343452.865282%

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 209089 151357 0 0 0.00% 0.00%
B 209089 151603 0 0 0.00% 0.00%
C 209089 151640 0 0 0.00% 0.00%
D 209089 151560 0 0 0.00% 0.00%

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 9 19 6488 9.15 2020 1888 502.6
A 7 110 6404 8.98 2020 1888 502.6
A 0 29 6355 8.89 2020 1888 502.6
B 2 9 6551 11.93 2009 1910 389.1
B 5 128 5474 9.16 2009 1910 389.1
B 3 80 5446 9.09 2009 1910 389.1
C 1 81 6550 8.65 2090 1948 531.9
C 3 203 6324 8.23 2090 1948 531.9
C 1 80 6314 8.21 2090 1948 531.9
D 10 189 5106 6.44 1950 1778 517.0
D 7 3 4986 6.2 1950 1778 517.0
D 4 160 4951 6.14 1950 1778 517.0

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