ASTROSAT CZTI

Data Quality Report

Orbit 27644

Creation date: 2024-06-27T19:42:30.624905
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/AS1T03_257T01_9000003976_27644cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27644cztM0_level2_quad_clean.evt
Size (bytes)581,932,80092,583,360
Size555.0 MB 88.3 MB
Events in quadrant A3,452,835621,343
Events in quadrant B4,189,717618,422
Events in quadrant C3,176,558596,681
Events in quadrant D6,366,370515,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145990
B0166410
C0135990
D0233580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467400.618525%
B64682744.236240%
C6468731.128633%
D6468103315.970934%

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 7622 6467 6 6 0.08% 0.09%
B 7623 6468 216 216 2.83% 3.34%
C 7623 6468 4 4 0.05% 0.06%
D 7622 6467 940 940 12.33% 14.54%

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 6 16 326058 2018.22 808 791 161.2
A 13 254 11309 65.26 808 791 161.2
A 8 192 7450 41.32 808 791 161.2
B 5 255 816351 5440.75 797 778 149.9
B 10 245 127715 846.81 797 778 149.9
B 0 230 51144 336.0 797 778 149.9
C 14 238 124169 679.77 776 780 181.5
C 0 207 20783 110.2 776 780 181.5
C 13 61 5420 25.56 776 780 181.5
D 7 80 1606285 9212.89 734 714 174.3
D 1 52 1189337 6820.41 734 714 174.3
D 2 250 503818 2886.85 734 714 174.3

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