ASTROSAT CZTI

Data Quality Report

Orbit 18733

Creation date: 2024-06-27T17:54:03.936018
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_072T04_9000002802_18733cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18733cztM0_level2_quad_clean.evt
Size (bytes)493,606,08090,429,120
Size470.7 MB 86.2 MB
Events in quadrant A3,427,995567,254
Events in quadrant B3,797,211571,633
Events in quadrant C3,571,715560,095
Events in quadrant D3,674,351549,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147012
B0158372
C0148862
D0156702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70251121.594306%
B70251802.562278%
C70251682.391459%
D70251812.576512%

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 8725 7027 0 0 0.00% 0.00%
B 8725 7027 19 19 0.22% 0.27%
C 8725 7027 0 0 0.00% 0.00%
D 8725 7027 47 47 0.54% 0.67%

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 11 29 23328 126.69 877 858 177.4
A 15 192 17178 92.01 877 858 177.4
A 13 254 11722 61.25 877 858 177.4
B 7 220 163197 981.48 872 852 165.4
B 10 245 112891 677.35 872 852 165.4
B 0 229 21635 125.65 872 852 165.4
C 14 238 130968 660.64 843 848 197.0
C 3 233 126539 638.15 843 848 197.0
C 8 128 11871 55.97 843 848 197.0
D 14 34 176347 847.42 855 831 207.1
D 10 70 100896 483.13 855 831 207.1
D 7 238 62720 298.81 855 831 207.1

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