ASTROSAT CZTI

Data Quality Report

Orbit 43533

Creation date: 2024-06-27T22:52:52.894197
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_102T01_9000005876_43533cztM0_level2.fits modeM0/AS1A12_102T01_9000005876_43533cztM0_level2_quad_clean.evt
Size (bytes)1,109,206,08069,998,400
Size1.0 GB 66.8 MB
Events in quadrant A7,907,358626,522
Events in quadrant B7,170,776664,258
Events in quadrant C13,536,584396,722
Events in quadrant D11,998,79021,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275671
B0253731
C0441159
D0395941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5784124321.490318%
B5785125621.711322%
C5784476982.451591%
D57845784100.000000%

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 6959 5784 834 834 11.98% 14.42%
B 6960 5786 958 958 13.76% 16.56%
C 6958 5783 4317 4317 62.04% 74.65%
D 6958 5783 3847 3847 55.29% 66.52%

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 0 228 2068493 16844.48 597 585 122.8
A 0 227 695897 5663.78 597 585 122.8
A 15 223 666688 5425.85 597 585 122.8
B 3 25 1939010 16322.71 618 600 118.8
B 3 42 1904407 16031.33 618 600 118.8
B 5 255 154723 1297.82 618 600 118.8
C 15 142 6379675 69620.87 385 387 91.6
C 15 190 2001865 21843.29 385 387 91.6
C 15 174 1751746 19113.6 385 387 91.6
D 4 216 6025588 172000.31 45 40 35.0
D 8 160 777183 22183.68 45 40 35.0
D 4 212 716528 20452.27 45 40 35.0

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