ASTROSAT CZTI

Data Quality Report

Orbit 44464

Creation date: 2024-06-27T23:01:30.018797
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_077T01_9000005984_44464cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44464cztM0_level2_quad_clean.evt
Size (bytes)586,025,280127,244,160
Size558.9 MB 121.3 MB
Events in quadrant A5,640,218859,081
Events in quadrant B3,904,644880,980
Events in quadrant C4,394,831833,957
Events in quadrant D7,127,812718,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236323
B0173041
C0184331
D0268241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140495276259368140492675219502
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80611211.501054%
B80611151.426622%
C8061971.203325%
D806182110.184841%

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 8061 8061 4 4 0.05% 0.05%
B 8061 8061 10 10 0.12% 0.12%
C 8061 8061 36 36 0.45% 0.45%
D 8061 8061 717 717 8.89% 8.89%

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 1986748 10116.27 932 909 196.3
A 0 243 16997 81.96 932 909 196.3
A 15 174 15104 72.31 932 909 196.3
B 5 172 86469 463.88 923 894 184.5
B 0 229 74717 400.18 923 894 184.5
B 5 255 36659 193.87 923 894 184.5
C 12 16 270651 1260.27 909 914 214.0
C 14 254 258613 1204.03 909 914 214.0
C 15 208 171645 797.69 909 914 214.0
D 5 222 1714335 7556.85 891 862 226.7
D 2 249 557482 2454.84 891 862 226.7
D 13 249 443475 1952.04 891 862 226.7

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