ASTROSAT CZTI

Data Quality Report

Orbit 48548

Creation date: 2024-09-19T22:22:59.353109
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_037T01_9000006436_48548cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48548cztM0_level2_quad_clean.evt
Size (bytes)477,720,000103,066,560
Size455.6 MB 98.3 MB
Events in quadrant A6,596,573670,544
Events in quadrant B2,856,837722,440
Events in quadrant C2,657,408689,653
Events in quadrant D5,079,159593,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02392110
B0131604
C0129034
D01993016

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63632423.803237%
B6364610.958517%
C6364150.235701%
D63613485.470838%

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 7515 6365 103 103 1.37% 1.62%
B 7515 6366 3 3 0.04% 0.05%
C 7515 6366 0 0 0.00% 0.00%
D 7515 6366 226 226 3.01% 3.55%

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 3916530 27746.28 680 668 141.1
A 7 3 25458 175.65 680 668 141.1
A 12 189 21080 144.63 680 668 141.1
B 5 255 40333 293.76 693 672 135.0
B 12 16 31853 230.95 693 672 135.0
B 0 155 27641 199.75 693 672 135.0
C 13 61 4535 23.97 681 686 160.5
C 3 233 2675 12.39 681 686 160.5
C 14 254 2052 8.51 681 686 160.5
D 10 204 1996282 12174.06 656 636 163.9
D 2 165 476395 2902.28 656 636 163.9
D 2 249 42725 256.76 656 636 163.9

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