ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_025T18_9000002932_level2

Creation date: 2025-11-30T07:50:45.849462
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/AS1A05_025T18_9000002932cztM0_level2.fits modeM0/AS1A05_025T18_9000002932cztM0_level2_quad_clean.evt
Size (bytes)155,957,760158,918,400
Size148.7 MB 151.6 MB
Events in quadrant A942,752959,607
Events in quadrant B902,630951,846
Events in quadrant C915,876903,544
Events in quadrant D805,400841,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349290
B0371850
C0377610
D0398730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167684312.570372%
B167685653.369513%
C167685593.333731%
D167685853.488788%

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 17483 16764 0 0 0.00% 0.00%
B 17483 16764 0 0 0.00% 0.00%
C 17483 16766 0 0 0.00% 0.00%
D 17483 16764 0 0 0.00% 0.00%

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 0 29 941 11.45 245 229 62.2
A 7 110 748 8.34 245 229 62.2
A 0 30 719 7.88 245 229 62.2
B 2 9 761 10.83 238 226 49.4
B 2 8 655 8.68 238 226 49.4
B 14 254 622 8.01 238 226 49.4
C 3 235 650 6.69 242 225 63.5
C 3 126 648 6.66 242 225 63.5
C 12 241 632 6.4 242 225 63.5
D 7 3 597 6.15 229 207 63.3
D 15 46 577 5.83 229 207 63.3
D 6 231 576 5.82 229 207 63.3

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