ASTROSAT CZTI

Data Quality Report

Orbit 36498

Creation date: 2022-06-29T04:03:15.281521
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/AS1A11_049T05_9000005212_36498cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36498cztM0_level2_quad_clean.evt
Size (bytes)485,435,52079,657,920
Size462.9 MB 76.0 MB
Events in quadrant A3,027,486508,914
Events in quadrant B3,505,201502,324
Events in quadrant C3,293,578492,066
Events in quadrant D4,454,498476,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129973
B0145182
C0136602
D0175602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197130.209779%
B61971492.404389%
C6197851.371631%
D61973856.212684%

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 8912 6199 5 5 0.06% 0.08%
B 8912 6199 82 82 0.92% 1.32%
C 8912 6199 68 68 0.76% 1.10%
D 8912 6199 416 416 4.67% 6.71%

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 10 83 215434 1499.84 706 694 143.2
A 15 223 38067 261.03 706 694 143.2
A 7 3 17991 120.81 706 694 143.2
B 5 172 369855 2772.11 694 677 133.2
B 5 255 180465 1350.01 694 677 133.2
B 0 214 47788 353.75 694 677 133.2
C 0 10 363644 2273.28 677 683 159.7
C 15 214 263357 1645.17 677 683 159.7
C 0 246 14201 84.67 677 683 159.7
D 12 227 838766 5078.54 672 653 165.0
D 2 153 287537 1738.37 672 653 165.0
D 2 250 198176 1196.89 672 653 165.0

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