ASTROSAT CZTI

Data Quality Report

Orbit 40781

Creation date: 2024-06-27T22:20:24.949025
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/AS1A12_095T02_9000005568_40781cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40781cztM0_level2_quad_clean.evt
Size (bytes)359,458,56091,215,360
Size342.8 MB 87.0 MB
Events in quadrant A3,022,270622,760
Events in quadrant B2,759,168646,092
Events in quadrant C3,302,436612,328
Events in quadrant D3,795,981497,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121703
B0118042
C0131402
D0150282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5467140.256082%
B5467420.768246%
C54671031.884031%
D546778014.267423%

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 9743 5469 8 8 0.08% 0.15%
B 9743 5469 33 33 0.34% 0.60%
C 9743 5469 102 102 1.05% 1.87%
D 9743 5468 216 216 2.22% 3.95%

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 516777 4074.99 619 607 126.7
A 13 248 53927 420.94 619 607 126.7
A 12 189 23969 184.44 619 607 126.7
B 0 229 106788 908.17 614 597 116.9
B 5 255 92245 783.79 614 597 116.9
B 7 202 50847 429.75 614 597 116.9
C 9 187 503044 3594.74 600 604 139.8
C 15 214 234798 1675.56 600 604 139.8
C 0 10 199654 1424.12 600 604 139.8
D 12 227 1070842 7804.96 555 542 137.1
D 2 249 237679 1729.28 555 542 137.1
D 12 191 154254 1120.92 555 542 137.1

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