ASTROSAT CZTI

Data Quality Report

Orbit 18734

Creation date: 2024-06-27T17:54:04.860372
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_072T04_9000002802_18734cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18734cztM0_level2_quad_clean.evt
Size (bytes)505,667,52094,201,920
Size482.2 MB 89.8 MB
Events in quadrant A3,405,419593,122
Events in quadrant B4,559,046595,579
Events in quadrant C3,417,209589,150
Events in quadrant D3,449,449579,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147302
B0181891
C0146371
D0152231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7108430.604952%
B71092062.897735%
C7109741.040934%
D7109680.956534%

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 7453 7109 0 0 0.00% 0.00%
B 7454 7110 59 59 0.79% 0.83%
C 7454 7110 0 0 0.00% 0.00%
D 7454 7110 41 41 0.55% 0.58%

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 15 192 60021 339.84 859 840 174.1
A 11 29 22961 127.03 859 840 174.1
A 13 254 11418 60.74 859 840 174.1
B 10 245 988039 6026.25 855 833 163.8
B 7 220 106769 646.67 855 833 163.8
B 0 197 29684 176.12 855 833 163.8
C 14 238 128281 656.72 829 836 194.1
C 3 233 46457 235.08 829 836 194.1
C 0 207 6306 28.19 829 836 194.1
D 14 34 178705 864.99 840 812 205.7
D 2 234 31481 149.13 840 812 205.7
D 7 238 28683 135.52 840 812 205.7

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