ASTROSAT CZTI

Data Quality Report

Orbit 41247

Creation date: 2024-06-27T22:26:29.493537
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/AS1A12_044T17_9000005636_41247cztM0_level2.fits modeM0/AS1A12_044T17_9000005636_41247cztM0_level2_quad_clean.evt
Size (bytes)432,780,48091,157,760
Size412.7 MB 86.9 MB
Events in quadrant A3,255,933626,580
Events in quadrant B3,113,845628,671
Events in quadrant C5,671,060549,768
Events in quadrant D3,532,069552,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131853
B0133512
C0206582
D0144982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5752270.469402%
B57521101.912378%
C575267911.804590%
D57521813.146732%

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 7185 5753 17 17 0.24% 0.30%
B 7185 5753 93 93 1.29% 1.62%
C 7185 5753 642 642 8.94% 11.16%
D 7184 5752 161 161 2.24% 2.80%

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 585385 4621.32 615 602 126.5
A 0 8 241315 1902.27 615 602 126.5
A 12 189 34254 265.94 615 602 126.5
B 0 186 479160 4104.5 606 591 116.6
B 0 229 124124 1059.49 606 591 116.6
B 0 245 40881 345.55 606 591 116.6
C 9 54 2741034 20461.2 576 578 133.9
C 0 10 243246 1811.84 576 578 133.9
C 15 214 238866 1779.14 576 578 133.9
D 2 249 490221 3331.56 596 579 147.0
D 13 249 394075 2677.38 596 579 147.0
D 5 222 161377 1094.08 596 579 147.0

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