ASTROSAT CZTI

Data Quality Report

Orbit 32843

Creation date: 2024-06-27T20:42:36.638656
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/AS1C06_002T09_9000004734_32843cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32843cztM0_level2_quad_clean.evt
Size (bytes)560,220,48095,045,760
Size534.3 MB 90.6 MB
Events in quadrant A2,549,118643,765
Events in quadrant B3,441,409647,005
Events in quadrant C4,199,509631,022
Events in quadrant D6,415,995583,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108533
B0136342
C0163112
D0228082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533240.075019%
B53322174.069767%
C53321933.619655%
D533271613.428357%

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 7333 5333 0 0 0.00% 0.00%
B 7333 5333 127 127 1.73% 2.38%
C 7333 5333 120 120 1.64% 2.25%
D 7333 5333 664 664 9.05% 12.45%

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 13 254 10637 77.85 654 644 128.4
A 0 226 5546 38.19 654 644 128.4
A 3 137 5439 37.36 654 644 128.4
B 5 172 526346 4314.84 650 634 121.8
B 0 219 153134 1251.66 650 634 121.8
B 0 197 52432 425.13 650 634 121.8
C 3 233 1189879 8255.66 631 637 144.1
C 9 160 412293 2857.7 631 637 144.1
C 0 10 51999 356.55 631 637 144.1
D 12 227 1638552 10976.22 604 592 149.2
D 8 195 1281151 8581.22 604 592 149.2
D 7 80 259966 1738.1 604 592 149.2

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