ASTROSAT CZTI

Data Quality Report

Orbit 50789

Creation date: 2025-02-17T09:10:51.616557
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/AS1C07_001T01_9000006450_50789cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50789cztM0_level2_quad_clean.evt
Size (bytes)911,010,24089,550,720
Size868.8 MB 85.4 MB
Events in quadrant A4,329,016707,285
Events in quadrant B3,589,235776,862
Events in quadrant C18,302,06097,965
Events in quadrant D6,902,158590,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183170
B0164560
C0595630
D0258951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7734971.254202%
B7734390.504267%
C7735690089.204913%
D77347459.632790%

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 7734 7734 71 71 0.92% 0.92%
B 7734 7734 13 13 0.17% 0.17%
C 7734 7734 6554 6554 84.74% 84.74%
D 7734 7734 668 668 8.64% 8.64%

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 4 249 213762 1074.87 797 777 198.1
A 8 247 127860 641.35 797 777 198.1
A 4 3 98577 493.57 797 777 198.1
B 8 128 58004 332.98 802 773 171.9
B 4 170 42649 243.64 802 773 171.9
B 6 51 40876 233.32 802 773 171.9
C 5 10 9775272 84451.75 412 407 115.7
C 1 44 4510243 38963.56 412 407 115.7
C 4 210 1325422 11447.71 412 407 115.7
D 2 216 544775 2615.81 739 715 208.0
D 7 126 543350 2608.96 739 715 208.0
D 15 108 341611 1639.01 739 715 208.0

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