ASTROSAT CZTI

Data Quality Report

Orbit 43866

Creation date: 2024-06-27T22:56:43.110925
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_087T01_9000005908_43866cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43866cztM0_level2_quad_clean.evt
Size (bytes)509,641,920112,037,760
Size486.0 MB 106.8 MB
Events in quadrant A4,172,320762,323
Events in quadrant B3,668,829787,805
Events in quadrant C5,826,900730,505
Events in quadrant D4,705,633670,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166072
B0148842
C0218622
D0182002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63382093.297570%
B63382884.544020%
C63384637.305144%
D63384206.626696%

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 7513 6338 14 14 0.19% 0.22%
B 7513 6338 113 113 1.50% 1.78%
C 7513 6338 249 249 3.31% 3.93%
D 7513 6338 305 305 4.06% 4.81%

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 1003053 6231.18 783 768 160.8
A 2 79 96510 595.22 783 768 160.8
A 15 223 17172 101.98 783 768 160.8
B 5 235 374463 2451.2 778 756 152.5
B 4 170 162766 1062.65 778 756 152.5
B 0 199 22030 139.54 778 756 152.5
C 3 233 2544445 14108.28 768 773 180.3
C 14 254 170919 943.7 768 773 180.3
C 15 158 72664 398.74 768 773 180.3
D 2 249 499483 2631.44 761 739 189.5
D 5 235 338778 1783.54 761 739 189.5
D 7 80 331242 1743.78 761 739 189.5

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