ASTROSAT CZTI

Data Quality Report

Orbit 31714

Creation date: 2024-06-27T20:31:50.233864
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/AS1T04_034T01_9000004632_31714cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31714cztM0_level2_quad_clean.evt
Size (bytes)731,727,36076,651,200
Size697.8 MB 73.1 MB
Events in quadrant A4,910,106469,338
Events in quadrant B5,794,043486,735
Events in quadrant C4,666,639475,557
Events in quadrant D6,373,247457,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188522
B0216315
C0180552
D0234052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61884176.738849%
B61872694.347826%
C61874156.707613%
D61875468.824956%

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 7538 6189 236 236 3.13% 3.81%
B 7537 6188 42 42 0.56% 0.68%
C 7537 6188 131 131 1.74% 2.12%
D 7537 6188 363 363 4.82% 5.87%

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 13 1369656 7553.73 915 902 181.2
A 13 254 12163 62.15 915 902 181.2
A 3 137 7998 39.16 915 902 181.2
B 6 159 1775437 10584.83 912 893 167.6
B 4 80 192343 1141.96 912 893 167.6
B 0 229 122363 724.55 912 893 167.6
C 0 10 844619 4224.07 876 888 199.7
C 14 238 145176 722.37 876 888 199.7
C 3 233 119407 593.36 876 888 199.7
D 8 195 1755943 8462.18 885 867 207.4
D 12 233 946335 4558.62 885 867 207.4
D 13 249 284949 1369.71 885 867 207.4

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