ASTROSAT CZTI

Data Quality Report

Orbit 16878

Creation date: 2024-06-27T17:29:09.734847
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/AS1A05_074T02_9000002504_16878cztM0_level2.evt modeM0/AS1A05_074T02_9000002504_16878cztM0_level2_quad_clean.evt
Size (bytes)580,674,24087,963,840
Size553.8 MB 83.9 MB
Events in quadrant A3,478,352569,456
Events in quadrant B3,552,582582,911
Events in quadrant C3,487,672557,122
Events in quadrant D6,619,969493,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143383
B0144962
C0144512
D0242112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65962253.411158%
B65962563.881140%
C65962814.260158%
D6596103615.706489%

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 9062 6598 0 0 0.00% 0.00%
B 9062 6598 2 2 0.02% 0.03%
C 9062 6599 0 0 0.00% 0.00%
D 9062 6599 671 671 7.40% 10.17%

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 12 189 12452 64.55 898 880 179.3
A 0 23 10412 53.17 898 880 179.3
A 0 226 8494 42.47 898 880 179.3
B 12 111 20118 113.69 892 871 169.3
B 11 111 17446 97.91 892 871 169.3
B 15 35 16156 90.29 892 871 169.3
C 14 238 133442 663.69 859 864 199.8
C 13 61 6056 25.99 859 864 199.8
C 3 233 4641 18.91 859 864 199.8
D 1 52 3043142 15263.56 825 801 199.3
D 11 66 310876 1555.66 825 801 199.3
D 7 207 101847 506.95 825 801 199.3

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