ASTROSAT CZTI

Data Quality Report

Orbit 33322

Creation date: 2024-06-27T20:47:33.163529
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/AS1T04_071T01_9000004782_33322cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33322cztM0_level2_quad_clean.evt
Size (bytes)576,086,40099,086,400
Size549.4 MB 94.5 MB
Events in quadrant A2,878,270713,474
Events in quadrant B4,533,981657,044
Events in quadrant C5,008,287641,509
Events in quadrant D4,691,498640,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115373
B0167342
C0183022
D0173682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496090.181452%
B496080116.149194%
C496050610.201613%
D49601332.681452%

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 7053 4961 1 1 0.01% 0.02%
B 7053 4961 425 425 6.03% 8.57%
C 7053 4961 429 429 6.08% 8.65%
D 7053 4961 122 122 1.73% 2.46%

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 15 169 240862 1794.65 676 667 133.8
A 15 17 23799 172.83 676 667 133.8
A 13 254 7055 47.73 676 667 133.8
B 0 219 986843 8614.55 620 607 114.5
B 5 172 830763 7251.23 620 607 114.5
B 5 200 197014 1715.57 620 607 114.5
C 1 23 1175248 8468.08 606 612 138.7
C 10 49 510263 3674.13 606 612 138.7
C 15 208 319338 2297.73 606 612 138.7
D 8 195 1582943 9270.7 631 618 170.7
D 2 249 246181 1438.73 631 618 170.7
D 2 250 236592 1382.55 631 618 170.7

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