ASTROSAT CZTI

Data Quality Report

Orbit 34576

Creation date: 2022-02-19T08:57:51.189159
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/AS1A05_167T01_9000004940_34576cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34576cztM0_level2_quad_clean.evt
Size (bytes)514,823,04078,477,120
Size491.0 MB 74.8 MB
Events in quadrant A2,657,363496,815
Events in quadrant B3,296,477506,804
Events in quadrant C2,870,395502,094
Events in quadrant D6,371,048462,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118663
B0135452
C0121082
D0231182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A585160.102547%
B58511332.273116%
C5851120.205093%
D58514417.537173%

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 7433 5852 0 0 0.00% 0.00%
B 7433 5852 97 97 1.30% 1.66%
C 7433 5852 4 4 0.05% 0.07%
D 7433 5852 286 286 3.85% 4.89%

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 10 83 42784 310.29 673 660 135.8
A 13 6 11337 78.65 673 660 135.8
A 13 254 9981 68.66 673 660 135.8
B 5 172 398178 3105.67 668 650 128.0
B 0 189 78648 609.35 668 650 128.0
B 0 229 73738 570.99 668 650 128.0
C 15 214 247911 1615.95 654 658 153.0
C 0 10 40580 260.92 654 658 153.0
C 14 67 27748 177.05 654 658 153.0
D 8 195 2976212 19312.94 630 613 154.1
D 2 249 324199 2100.22 630 613 154.1
D 1 47 213904 1384.35 630 613 154.1

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