ASTROSAT CZTI

Data Quality Report

Orbit 34956

Creation date: 2022-03-17T00:40:47.991844
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/AS1A11_047T09_9000005010_34956cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34956cztM0_level2_quad_clean.evt
Size (bytes)468,025,92084,029,760
Size446.3 MB 80.1 MB
Events in quadrant A2,612,308564,981
Events in quadrant B3,678,031547,195
Events in quadrant C2,843,412549,751
Events in quadrant D4,680,670511,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111183
B0143502
C0115352
D0175872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5305100.188501%
B53053155.937795%
C5305470.885957%
D53052324.373233%

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 7218 5306 2 2 0.03% 0.04%
B 7218 5306 243 243 3.37% 4.58%
C 7218 5306 27 27 0.37% 0.51%
D 7218 5306 232 232 3.21% 4.37%

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 71859 543.32 651 639 131.1
A 13 6 12988 94.21 651 639 131.1
A 13 254 9301 66.08 651 639 131.1
B 5 172 856236 7147.68 626 610 119.7
B 0 190 190045 1582.49 626 610 119.7
B 4 232 68425 566.51 626 610 119.7
C 15 214 223734 1544.06 629 636 144.5
C 0 10 155902 1074.6 629 636 144.5
C 14 67 4360 25.77 629 636 144.5
D 8 195 964624 6447.36 626 610 149.5
D 1 52 593561 3965.68 626 610 149.5
D 13 249 166973 1112.64 626 610 149.5

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