ASTROSAT CZTI

Data Quality Report

Orbit 46783

Creation date: 2024-06-27T23:27:35.352478
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/AS1A13_053T01_9000006266_46783cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46783cztM0_level2_quad_clean.evt
Size (bytes)573,770,880124,896,960
Size547.2 MB 119.1 MB
Events in quadrant A7,372,303827,944
Events in quadrant B4,297,392860,903
Events in quadrant C3,766,533812,858
Events in quadrant D5,185,981727,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269091
B0181671
C0172101
D0211011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79532883.621275%
B79531321.659751%
C79531331.672325%
D79534425.557651%

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 7953 7953 107 107 1.35% 1.35%
B 7953 7953 22 22 0.28% 0.28%
C 7953 7953 105 105 1.32% 1.32%
D 7953 7953 387 387 4.87% 4.87%

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 3621243 20216.02 859 840 179.1
A 13 248 381544 2125.82 859 840 179.1
A 3 7 28181 152.67 859 840 179.1
B 3 112 587009 3442.05 861 832 170.3
B 4 171 76789 446.02 861 832 170.3
B 5 172 74325 431.55 861 832 170.3
C 1 241 354088 1771.5 851 854 199.4
C 14 254 53621 264.63 851 854 199.4
C 3 233 29197 142.14 851 854 199.4
D 13 249 1046659 5015.89 835 808 208.5
D 1 52 500594 2396.97 835 808 208.5
D 2 37 323843 1549.27 835 808 208.5

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