ASTROSAT CZTI

Data Quality Report

Orbit 27930

Creation date: 2024-06-27T19:46:06.296930
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/AS1A10_049T01_9000004032_27930cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27930cztM0_level2_quad_clean.evt
Size (bytes)1,030,383,360203,184,000
Size982.7 MB 193.8 MB
Events in quadrant A6,297,4681,345,299
Events in quadrant B7,037,0621,354,437
Events in quadrant C6,633,0571,276,433
Events in quadrant D10,317,9371,237,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276430
B0294650
C0281870
D0399950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13623730.535858%
B136241611.181738%
C136242151.578097%
D136245283.875514%

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 15348 13625 0 0 0.00% 0.00%
B 15349 13626 28 28 0.18% 0.21%
C 15349 13626 37 37 0.24% 0.27%
D 15349 13625 423 423 2.76% 3.10%

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 13 254 23100 65.62 1629 1591 327.8
A 3 137 15806 43.37 1629 1591 327.8
A 8 192 14911 40.64 1629 1591 327.8
B 10 245 577376 1852.18 1620 1579 310.9
B 12 111 39290 121.31 1620 1579 310.9
B 0 230 34917 107.24 1620 1579 310.9
C 14 238 249084 681.36 1558 1568 363.3
C 3 233 238345 651.79 1558 1568 363.3
C 6 112 69891 188.08 1558 1568 363.3
D 1 52 2577951 6965.43 1550 1505 369.9
D 8 195 839137 2264.54 1550 1505 369.9
D 2 250 478418 1289.34 1550 1505 369.9

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