ASTROSAT CZTI

Data Quality Report

Orbit 48523

Creation date: 2024-09-21T12:19:36.666871
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_037T05_9000006434_48523cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48523cztM0_level2_quad_clean.evt
Size (bytes)662,172,480121,789,440
Size631.5 MB 116.1 MB
Events in quadrant A8,009,291817,635
Events in quadrant B3,790,200863,059
Events in quadrant C3,502,341832,418
Events in quadrant D8,575,450606,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029883104
B01736968
C01689559
D03151375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01662
C01662
D01662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81713724.552686%
B81762102.568493%
C81821131.381080%
D8178183722.462705%

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 8598 8175 20 20 0.23% 0.24%
B 8601 8182 6 6 0.07% 0.07%
C 8598 8184 0 0 0.00% 0.00%
D 8598 8181 1609 1609 18.71% 19.67%

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 4372220 23308.07 890 869 187.5
A 12 189 150814 799.51 890 869 187.5
A 10 255 51153 268.11 890 869 187.5
B 12 16 88849 488.06 897 866 180.3
B 8 234 71270 390.55 897 866 180.3
B 5 255 45327 246.64 897 866 180.3
C 3 233 21996 100.62 889 890 209.8
C 14 254 6873 28.52 889 890 209.8
C 13 61 5941 24.08 889 890 209.8
D 2 165 5239496 25725.08 809 780 203.6
D 2 249 166409 813.33 809 780 203.6
D 12 233 41581 200.36 809 780 203.6

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