ASTROSAT CZTI

Data Quality Report

Orbit 42320

Creation date: 2024-06-27T22:38:12.883419
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/AS1P01_999T99_9000005772_42320cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42320cztM0_level2_quad_clean.evt
Size (bytes)268,856,64074,799,360
Size256.4 MB 71.3 MB
Events in quadrant A2,734,878490,340
Events in quadrant B2,124,346502,437
Events in quadrant C2,204,125493,635
Events in quadrant D2,527,651453,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111541
B097661
C096411
D0109891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4627651.404798%
B4627280.605144%
C462720.043225%
D4628851.836646%

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 6088 4628 40 40 0.66% 0.86%
B 6088 4628 15 15 0.25% 0.32%
C 6088 4628 1 1 0.02% 0.02%
D 6089 4629 73 73 1.20% 1.58%

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 15 223 411244 4027.71 489 477 102.0
A 10 83 404740 3963.94 489 477 102.0
A 13 248 15861 150.85 489 477 102.0
B 5 255 73260 768.54 486 472 94.7
B 5 172 73199 767.89 486 472 94.7
B 3 112 33351 347.16 486 472 94.7
C 15 214 190030 1681.71 479 481 112.7
C 9 54 139892 1236.88 479 481 112.7
C 12 249 6210 50.83 479 481 112.7
D 1 52 233406 1992.37 477 462 116.9
D 5 70 133187 1135.2 477 462 116.9
D 12 6 95984 817.0 477 462 116.9

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