ASTROSAT CZTI

Data Quality Report

Orbit 34535

Creation date: 2022-02-16T13:06:02.328573
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/AS1A06_005T01_9000004932_34535cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34535cztM0_level2_quad_clean.evt
Size (bytes)465,327,36061,220,160
Size443.8 MB 58.4 MB
Events in quadrant A2,623,744378,622
Events in quadrant B3,945,221369,647
Events in quadrant C3,045,315377,169
Events in quadrant D4,113,988352,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111253
B0151282
C0122992
D0158662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537490.167473%
B53743907.257164%
C5374250.465203%
D53741212.251582%

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 7137 5375 1 1 0.01% 0.02%
B 7137 5375 272 272 3.81% 5.06%
C 7137 5375 17 17 0.24% 0.32%
D 7137 5375 94 94 1.32% 1.75%

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 9 143 43975 334.43 650 638 129.6
A 10 83 39388 299.03 650 638 129.6
A 13 6 17783 132.31 650 638 129.6
B 5 172 1425646 11875.02 627 612 120.0
B 4 171 20106 162.45 627 612 120.0
B 5 173 14961 119.57 627 612 120.0
C 15 214 242709 1639.98 639 644 147.6
C 14 67 207087 1398.64 639 644 147.6
C 0 10 91529 615.74 639 644 147.6
D 8 195 939521 6104.4 632 615 153.8
D 7 80 270863 1757.05 632 615 153.8
D 2 249 110259 712.86 632 615 153.8

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