ASTROSAT CZTI

Data Quality Report

Orbit 38486

Creation date: 2024-06-27T21:53:25.091551
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_018T01_9000005386_38486cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38486cztM0_level2_quad_clean.evt
Size (bytes)492,160,32089,216,640
Size469.4 MB 85.1 MB
Events in quadrant A6,575,453597,621
Events in quadrant B3,010,267634,153
Events in quadrant C2,627,685605,674
Events in quadrant D5,578,324478,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233813
B0125972
C0112852
D0204132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54984878.857766%
B5498961.746089%
C549870.127319%
D549895817.424518%

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 7171 5499 435 435 6.07% 7.91%
B 7171 5499 51 51 0.71% 0.93%
C 7171 5499 2 2 0.03% 0.04%
D 7171 5499 879 879 12.26% 15.98%

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 15 222 3786801 30670.48 604 591 123.4
A 10 83 395340 3197.69 604 591 123.4
A 12 189 30656 243.54 604 591 123.4
B 4 171 439166 3749.95 610 595 117.0
B 8 3 65086 551.42 610 595 117.0
B 0 183 38389 323.15 610 595 117.0
C 15 214 232294 1675.07 595 599 138.3
C 5 250 59594 426.51 595 599 138.3
C 0 10 11568 79.3 595 599 138.3
D 12 227 1830008 13566.09 554 539 134.9
D 10 118 372440 2757.76 554 539 134.9
D 13 171 354744 2626.54 554 539 134.9

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