ASTROSAT CZTI

Data Quality Report

Orbit 39984

Creation date: 2024-06-27T22:10:55.282495
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_054T03_9000005516_39984cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39984cztM0_level2_quad_clean.evt
Size (bytes)300,925,44088,309,440
Size287.0 MB 84.2 MB
Events in quadrant A2,823,727595,680
Events in quadrant B2,695,713611,108
Events in quadrant C2,660,913579,566
Events in quadrant D2,563,493532,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113143
B0114262
C0110352
D0111962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071180.354960%
B5071641.262078%
C5071711.400118%
D5071230.453559%

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 7193 5072 13 13 0.18% 0.26%
B 7193 5072 36 36 0.50% 0.71%
C 7193 5072 78 78 1.08% 1.54%
D 7193 5072 21 21 0.29% 0.41%

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 469595 4028.43 573 563 116.4
A 13 248 64430 548.54 573 563 116.4
A 2 79 45471 385.71 573 563 116.4
B 4 171 299614 2748.17 567 553 108.8
B 5 255 110526 1010.58 567 553 108.8
B 0 221 26728 240.53 567 553 108.8
C 15 214 213053 1639.64 555 561 129.6
C 0 10 172716 1328.39 555 561 129.6
C 10 20 55116 420.96 555 561 129.6
D 2 250 146244 1062.3 558 543 137.2
D 9 19 134686 978.03 558 543 137.2
D 2 234 27821 198.88 558 543 137.2

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