ASTROSAT CZTI

Data Quality Report

Orbit 44854

Creation date: 2024-06-27T23:07:15.642256
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_017T01_9000006028_44854cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44854cztM0_level2_quad_clean.evt
Size (bytes)550,540,800116,009,280
Size525.0 MB 110.6 MB
Events in quadrant A5,729,005774,736
Events in quadrant B3,628,501816,667
Events in quadrant C3,341,156785,351
Events in quadrant D7,116,411629,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231312
B0159382
C0153372
D0261922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72722974.084158%
B7272931.278878%
C7272280.385039%
D7272101013.888889%

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 7762 7273 78 78 1.00% 1.07%
B 7762 7273 33 33 0.43% 0.45%
C 7762 7273 6 6 0.08% 0.08%
D 7762 7273 702 702 9.04% 9.65%

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 2271760 13620.01 804 787 166.7
A 13 248 284096 1699.13 804 787 166.7
A 10 248 21843 126.28 804 787 166.7
B 4 170 120502 736.42 817 791 162.6
B 0 155 75513 459.66 817 791 162.6
B 5 255 59256 359.65 817 791 162.6
C 12 2 88320 464.11 805 809 188.6
C 12 250 55707 291.15 805 809 188.6
C 1 3 33833 175.14 805 809 188.6
D 13 174 1390425 7373.23 750 726 188.5
D 13 249 888375 4709.54 750 726 188.5
D 5 222 495914 2627.29 750 726 188.5

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