ASTROSAT CZTI

Data Quality Report

Orbit 44639

Creation date: 2024-06-27T23:04:47.163679
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_072T01_9000006008_44639cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44639cztM0_level2_quad_clean.evt
Size (bytes)599,587,200109,658,880
Size571.8 MB 104.6 MB
Events in quadrant A5,211,967738,002
Events in quadrant B4,056,967757,952
Events in quadrant C5,506,907719,013
Events in quadrant D6,873,146613,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217320
B0168240
C0211930
D0253170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70501962.780142%
B70502042.893617%
C70501261.787234%
D70507049.985816%

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 7050 7050 94 94 1.33% 1.33%
B 7050 7050 113 113 1.60% 1.60%
C 7050 7050 120 120 1.70% 1.70%
D 7050 7050 644 644 9.13% 9.13%

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 1762694 11094.18 765 747 158.8
A 13 248 246501 1547.4 765 747 158.8
A 15 223 208150 1305.92 765 747 158.8
B 4 171 690794 4567.54 763 739 151.1
B 5 172 128630 846.52 763 739 151.1
B 0 155 56878 371.59 763 739 151.1
C 12 2 2136235 12235.88 744 747 174.5
C 12 250 189075 1079.08 744 747 174.5
C 3 233 151541 864.02 744 747 174.5
D 13 249 1428754 7852.42 721 697 181.9
D 1 52 944292 5188.52 721 697 181.9
D 13 174 729080 4005.14 721 697 181.9

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