ASTROSAT CZTI

Data Quality Report

Orbit 46143

Creation date: 2024-06-27T23:19:37.992999
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_098T02_9000006174_46143cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46143cztM0_level2_quad_clean.evt
Size (bytes)523,690,560107,012,160
Size499.4 MB 102.1 MB
Events in quadrant A6,539,456688,229
Events in quadrant B4,083,071753,629
Events in quadrant C3,499,751718,352
Events in quadrant D4,754,694622,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237552
B0164092
C0150182
D0187362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65584106.251906%
B65581191.814578%
C65581131.723086%
D65584116.267155%

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 7563 6559 214 214 2.83% 3.26%
B 7563 6559 20 20 0.26% 0.30%
C 7563 6559 72 72 0.95% 1.10%
D 7563 6559 272 272 3.60% 4.15%

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 3125086 20499.33 739 723 152.4
A 13 248 487676 3194.96 739 723 152.4
A 14 235 33674 216.2 739 723 152.4
B 3 112 861890 5767.78 755 732 149.3
B 5 172 96922 644.25 755 732 149.3
B 0 155 52883 349.29 755 732 149.3
C 12 2 291153 1665.15 739 742 174.4
C 14 254 237860 1359.58 739 742 174.4
C 12 249 46749 263.79 739 742 174.4
D 5 235 588757 3239.13 714 694 181.5
D 2 249 438082 2409.19 714 694 181.5
D 13 249 220032 1208.14 714 694 181.5

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