ASTROSAT CZTI

Data Quality Report

Orbit 44232

Creation date: 2024-06-27T23:00:47.093805
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_074T01_9000005974_44232cztM0_level2.fits modeM0/AS1A13_074T01_9000005974_44232cztM0_level2_quad_clean.evt
Size (bytes)769,533,120119,520,000
Size733.9 MB 114.0 MB
Events in quadrant A12,035,705615,206
Events in quadrant B4,444,127881,793
Events in quadrant C4,038,780839,487
Events in quadrant D7,340,942719,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414181
B0186021
C0179881
D0274722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8086268633.217907%
B80861291.595350%
C8086811.001731%
D80857349.078541%

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 8087 8087 2234 2234 27.62% 27.62%
B 8087 8087 43 43 0.53% 0.53%
C 8087 8087 43 43 0.53% 0.53%
D 8086 8086 716 716 8.85% 8.85%

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 15 223 6821787 40629.87 810 793 167.9
A 10 83 1540543 9171.66 810 793 167.9
A 7 16 401659 2387.79 810 793 167.9
B 5 172 172892 955.56 906 878 180.0
B 5 255 153049 845.33 906 878 180.0
B 0 155 100796 555.06 906 878 180.0
C 14 254 327773 1543.8 893 898 211.7
C 4 254 184697 868.07 893 898 211.7
C 3 233 17333 77.62 893 898 211.7
D 1 52 2226403 10064.69 864 837 221.1
D 13 249 701187 3167.2 864 837 221.1
D 14 35 435880 1967.4 864 837 221.1

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