ASTROSAT CZTI

Data Quality Report

Orbit 44643

Creation date: 2024-06-27T23:04:48.928991
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_072T01_9000006008_44643cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44643cztM0_level2_quad_clean.evt
Size (bytes)471,528,000103,703,040
Size449.7 MB 98.9 MB
Events in quadrant A4,997,333694,921
Events in quadrant B3,396,113716,346
Events in quadrant C3,372,563677,663
Events in quadrant D5,177,567592,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202015
B0148631
C0147801
D0200831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65751862.828897%
B65761432.174574%
C65761442.189781%
D65765728.698297%

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 7480 6576 74 74 0.99% 1.13%
B 7481 6577 54 54 0.72% 0.82%
C 7481 6577 95 95 1.27% 1.44%
D 7481 6577 420 420 5.61% 6.39%

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 1836758 12363.05 717 702 148.5
A 13 248 219883 1475.85 717 702 148.5
A 15 223 105903 708.37 717 702 148.5
B 0 189 225057 1590.26 716 694 141.1
B 0 186 149914 1057.66 716 694 141.1
B 0 168 91848 646.09 716 694 141.1
C 12 2 378045 2272.14 704 709 166.1
C 12 16 110536 661.33 704 709 166.1
C 14 254 76362 455.55 704 709 166.1
D 1 52 1284249 7404.23 689 667 173.4
D 13 249 465387 2680.7 689 667 173.4
D 5 222 213399 1227.13 689 667 173.4

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