ASTROSAT CZTI

Data Quality Report

Orbit 45145

Creation date: 2024-06-27T23:09:56.994664
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/AS1A13_017T02_9000006046_45145cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45145cztM0_level2_quad_clean.evt
Size (bytes)383,359,68059,708,160
Size365.6 MB 56.9 MB
Events in quadrant A7,450,691257,925
Events in quadrant B2,150,006443,722
Events in quadrant C1,801,281428,006
Events in quadrant D2,468,367388,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02505770
B091659
C083765
D01015112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4105190946.504263%
B4110270.656934%
C411160.145950%
D4108561.363194%

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 4106 4105 1636 1636 39.84% 39.85%
B 4112 4111 10 10 0.24% 0.24%
C 4113 4112 5 5 0.12% 0.12%
D 4111 4109 53 53 1.29% 1.29%

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 15 223 4741288 60396.86 370 363 78.5
A 10 83 1231405 15682.82 370 363 78.5
A 13 248 21686 271.64 370 363 78.5
B 5 255 149720 1655.15 450 436 90.2
B 4 170 75252 829.5 450 436 90.2
B 0 183 40503 444.23 450 436 90.2
C 2 14 46396 435.07 444 446 105.6
C 3 233 7079 62.8 444 446 105.6
C 12 250 6587 58.14 444 446 105.6
D 13 249 233376 2062.35 440 426 113.0
D 1 52 168075 1484.23 440 426 113.0
D 1 47 97286 857.52 440 426 113.0

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