ASTROSAT CZTI

Data Quality Report

Orbit 13239

Creation date: 2024-06-27T16:38:15.231786
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/AS1G08_077T01_9000001970_13239cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13239cztM0_level2_quad_clean.evt
Size (bytes)568,379,52089,023,680
Size542.0 MB 84.9 MB
Events in quadrant A3,216,646585,200
Events in quadrant B6,943,062491,971
Events in quadrant C3,053,966593,839
Events in quadrant D3,556,198568,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141003
B0250922
C0135322
D0152712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65281031.577819%
B6528165925.413603%
C6528761.164216%
D65281642.512255%

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 8464 6531 9 9 0.11% 0.14%
B 8464 6529 1134 1134 13.40% 17.37%
C 8464 6531 1 1 0.01% 0.02%
D 8463 6530 64 64 0.76% 0.98%

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 12 189 130001 807.5 787 768 160.0
A 15 69 35480 216.89 787 768 160.0
A 15 239 16476 98.15 787 768 160.0
B 4 239 4116900 31695.67 680 661 129.9
B 3 64 61808 470.84 680 661 129.9
B 0 230 35400 267.5 680 661 129.9
C 15 208 34382 188.88 774 778 177.9
C 13 61 5590 27.05 774 778 177.9
C 8 222 2596 10.22 774 778 177.9
D 10 157 326828 1772.48 764 741 184.0
D 14 34 117640 635.42 764 741 184.0
D 5 222 63213 339.57 764 741 184.0

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