ASTROSAT CZTI

Data Quality Report

Orbit 35101

Creation date: 2022-03-31T13:17:00.248354
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/AS1T05_015T01_9000005026_35101cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35101cztM0_level2_quad_clean.evt
Size (bytes)592,470,72054,210,240
Size565.0 MB 51.7 MB
Events in quadrant A2,899,936325,577
Events in quadrant B3,381,196328,056
Events in quadrant C3,384,205315,872
Events in quadrant D7,911,501292,005

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
A0119043
B0134662
C0132792
D0272892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541780.147683%
B5417711.310689%
C54171733.193650%
D541786415.949788%

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 7358 5418 0 0 0.00% 0.00%
B 7358 5418 27 27 0.37% 0.50%
C 7358 5418 117 117 1.59% 2.16%
D 7358 5418 755 755 10.26% 13.94%

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 10 83 82111 569.07 725 714 143.0
A 13 254 9659 62.54 725 714 143.0
A 13 6 8182 52.21 725 714 143.0
B 5 172 245501 1855.5 710 695 131.9
B 0 190 118448 892.5 710 695 131.9
B 5 255 69860 524.23 710 695 131.9
C 0 10 411353 2623.97 685 693 156.5
C 15 214 223686 1424.84 685 693 156.5
C 12 250 22684 140.51 685 693 156.5
D 8 195 3884860 23804.16 670 654 163.2
D 7 80 841117 5150.73 670 654 163.2
D 13 249 198521 1212.62 670 654 163.2

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