ASTROSAT CZTI

Data Quality Report

Orbit 37823

Creation date: 2024-06-27T21:44:55.718725
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/AS1T05_054T01_9000005350_37823cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37823cztM0_level2_quad_clean.evt
Size (bytes)420,750,720102,407,040
Size401.3 MB 97.7 MB
Events in quadrant A3,005,247694,618
Events in quadrant B3,271,863695,812
Events in quadrant C2,835,926696,697
Events in quadrant D3,282,213656,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119823
B0129632
C0115722
D0130552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5116390.762314%
B51161202.345582%
C5116320.625489%
D51161001.954652%

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 7059 5117 18 18 0.25% 0.35%
B 7059 5117 87 87 1.23% 1.70%
C 7059 5117 18 18 0.25% 0.35%
D 7059 5117 85 85 1.20% 1.66%

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 350946 2743.84 646 636 127.7
A 9 143 81250 631.42 646 636 127.7
A 7 16 27795 212.73 646 636 127.7
B 5 172 315198 2683.15 629 616 117.2
B 0 229 151036 1282.97 629 616 117.2
B 0 213 93417 791.52 629 616 117.2
C 15 214 237848 1661.17 620 624 142.8
C 0 10 128894 898.21 620 624 142.8
C 14 254 29073 199.21 620 624 142.8
D 2 249 229666 1502.31 623 607 152.5
D 12 227 137821 899.93 623 607 152.5
D 13 249 126524 825.84 623 607 152.5

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