ASTROSAT CZTI

Data Quality Report

Orbit 43927

Creation date: 2024-06-27T22:57:18.230073
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_023T01_9000005916_43927cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43927cztM0_level2_quad_clean.evt
Size (bytes)617,843,520134,435,520
Size589.2 MB 128.2 MB
Events in quadrant A7,573,604858,335
Events in quadrant B5,080,687906,316
Events in quadrant C4,242,748908,367
Events in quadrant D5,315,867808,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289821
B0206641
C0184511
D0216991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84796777.984432%
B84795746.769666%
C84792412.842316%
D84794204.953414%

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 9174 8480 101 101 1.10% 1.19%
B 9174 8480 97 97 1.06% 1.14%
C 9174 8480 19 19 0.21% 0.22%
D 9174 8480 201 201 2.19% 2.37%

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 15 222 2142079 10282.78 998 974 208.2
A 10 83 1259646 6044.85 998 974 208.2
A 7 191 120917 576.03 998 974 208.2
B 0 213 258406 1287.21 995 961 200.0
B 5 235 257817 1284.26 995 961 200.0
B 5 172 235528 1172.82 995 961 200.0
C 10 22 136207 574.3 996 998 235.4
C 14 254 106607 448.58 996 998 235.4
C 15 158 50441 210.01 996 998 235.4
D 1 52 576246 2286.64 993 962 251.6
D 6 239 213852 846.19 993 962 251.6
D 5 235 169808 671.13 993 962 251.6

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