ASTROSAT CZTI

Data Quality Report

Orbit 31058

Creation date: 2024-06-27T20:22:51.985890
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/AS1C06_002T01_9000004490_31058cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31058cztM0_level2_quad_clean.evt
Size (bytes)727,119,36099,711,360
Size693.4 MB 95.1 MB
Events in quadrant A3,173,150676,015
Events in quadrant B5,651,494659,103
Events in quadrant C3,295,729644,938
Events in quadrant D9,444,705568,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137511
B0216761
C0139031
D0327941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6750540.800000%
B67502643.911111%
C67511091.614576%
D6751166824.707451%

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 7625 6751 0 0 0.00% 0.00%
B 7625 6751 84 84 1.10% 1.24%
C 7626 6752 1 1 0.01% 0.01%
D 7626 6752 1536 1536 20.14% 22.75%

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 13 254 12744 71.87 821 804 166.1
A 3 137 8178 44.38 821 804 166.1
A 0 226 7015 37.38 821 804 166.1
B 6 159 1854555 12077.23 800 779 153.5
B 5 172 381770 2482.13 800 779 153.5
B 0 190 106676 689.91 800 779 153.5
C 14 238 124072 682.67 777 783 180.6
C 1 16 45535 247.8 777 783 180.6
C 0 10 37345 202.45 777 783 180.6
D 13 174 4747925 27080.34 730 709 175.3
D 8 195 1463646 8345.28 730 709 175.3
D 12 218 315911 1798.06 730 709 175.3

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