ASTROSAT CZTI

Data Quality Report

Orbit 42160

Creation date: 2024-06-27T22:37:53.680000
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_088T21_9000005764_42160cztM0_level2.fits modeM0/AS1A12_088T21_9000005764_42160cztM0_level2_quad_clean.evt
Size (bytes)467,818,560101,623,680
Size446.1 MB 96.9 MB
Events in quadrant A3,931,311683,239
Events in quadrant B3,037,924710,149
Events in quadrant C2,961,228671,876
Events in quadrant D6,889,265565,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156362
B0134792
C0128942
D0249682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64041061.655215%
B6404320.499688%
C640450.078076%
D640574911.693989%

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 9421 6406 99 99 1.05% 1.55%
B 9421 6406 22 22 0.23% 0.34%
C 9421 6406 1 1 0.01% 0.02%
D 9422 6406 767 767 8.14% 11.97%

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 623843 4369.38 693 678 142.6
A 15 222 470616 3295.01 693 678 142.6
A 12 189 82337 572.56 693 678 142.6
B 5 255 100469 736.38 694 675 135.5
B 0 229 75045 548.77 694 675 135.5
B 0 156 54335 395.95 694 675 135.5
C 15 214 269634 1683.37 678 683 159.8
C 0 239 21750 131.86 678 683 159.8
C 15 111 16059 96.24 678 683 159.8
D 12 33 2074060 13023.82 648 629 159.2
D 12 6 794600 4987.16 648 629 159.2
D 1 52 354181 2220.76 648 629 159.2

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