ASTROSAT CZTI

Data Quality Report

Orbit 09109

Creation date: 2024-06-27T15:41:24.871405
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/AS1A03_105T01_9000001268_09109cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09109cztM0_level2_quad_clean.evt
Size (bytes)564,837,12081,509,760
Size538.7 MB 77.7 MB
Events in quadrant A4,289,645482,686
Events in quadrant B4,041,744486,272
Events in quadrant C3,830,475474,111
Events in quadrant D4,397,233465,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176814
B0171995
C0170393
D0184185

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80503424.248447%
B80493554.410486%
C80502863.552795%
D80493804.721083%

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 8370 8050 14 14 0.17% 0.17%
B 8370 8051 3 3 0.04% 0.04%
C 8370 8053 5 5 0.06% 0.06%
D 8370 8052 40 40 0.48% 0.50%

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 8 5 237587 1137.31 1011 990 208.0
A 15 174 72059 341.63 1011 990 208.0
A 1 162 60196 284.6 1011 990 208.0
B 0 214 91993 459.52 1008 982 198.1
B 12 111 22836 110.34 1008 982 198.1
B 11 111 18372 87.8 1008 982 198.1
C 14 234 11608 46.32 975 980 229.5
C 13 61 7400 27.98 975 980 229.5
C 12 4 7325 27.65 975 980 229.5
D 1 52 397034 1600.61 970 943 247.5
D 13 104 79075 315.73 970 943 247.5
D 6 225 76850 306.74 970 943 247.5

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