ASTROSAT CZTI

Data Quality Report

Orbit 43820

Creation date: 2024-06-27T22:56:11.061089
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_018T01_9000005906_43820cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43820cztM0_level2_quad_clean.evt
Size (bytes)624,254,400106,459,200
Size595.3 MB 101.5 MB
Events in quadrant A4,606,888767,767
Events in quadrant B4,881,742778,262
Events in quadrant C4,095,072732,799
Events in quadrant D9,028,976498,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183292
B0186502
C0163032
D0311495

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63891502.347785%
B63894296.714666%
C63894156.495539%
D6388211633.124609%

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 7539 6389 27 27 0.36% 0.42%
B 7539 6390 242 242 3.21% 3.79%
C 7539 6389 331 331 4.39% 5.18%
D 7538 6388 1866 1866 24.75% 29.21%

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 1045381 6405.08 789 775 163.1
A 15 223 357172 2185.27 789 775 163.1
A 14 254 64927 393.35 789 775 163.1
B 0 200 924770 6096.39 782 759 151.6
B 5 235 467225 3077.63 782 759 151.6
B 5 172 91762 600.42 782 759 151.6
C 15 174 603572 3447.48 748 755 174.9
C 15 158 237413 1353.43 748 755 174.9
C 14 96 171078 974.07 748 755 174.9
D 12 2 2392698 14066.46 657 637 170.1
D 12 33 1815673 10673.27 657 637 170.1
D 10 102 1310967 7705.36 657 637 170.1

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