ASTROSAT CZTI

Data Quality Report

Orbit 33679

Creation date: 2024-06-27T20:51:25.804223
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_076T01_9000004810_33679cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33679cztM0_level2_quad_clean.evt
Size (bytes)665,893,44043,151,040
Size635.0 MB 41.2 MB
Events in quadrant A8,539,4259,350
Events in quadrant B3,997,430307,249
Events in quadrant C3,373,987311,232
Events in quadrant D3,883,856294,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292052
B0154611
C0133981
D0152791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5463544299.615596%
B54632584.722680%
C5463621.134908%
D54631091.995241%

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 7135 5462 785 785 11.00% 14.37%
B 7136 5464 167 167 2.34% 3.06%
C 7136 5464 48 48 0.67% 0.88%
D 7136 5464 89 89 1.25% 1.63%

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 15 169 8411343 1111693.32 28 27 7.6
A 15 237 17564 2317.8 28 27 7.6
A 13 254 501 62.65 28 27 7.6
B 5 172 749322 5996.06 649 632 124.9
B 4 170 576929 4615.41 649 632 124.9
B 0 213 26100 203.96 649 632 124.9
C 3 233 493910 3301.06 645 652 149.4
C 15 214 234111 1562.39 645 652 149.4
C 0 10 111612 742.58 645 652 149.4
D 8 195 465853 2912.81 647 630 159.7
D 10 118 283084 1768.47 647 630 159.7
D 13 249 200435 1251.0 647 630 159.7

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