ASTROSAT CZTI

Data Quality Report

Orbit 31121

Creation date: 2024-06-27T20:23:37.136646
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/AS1A10_109T01_9000004492_31121cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31121cztM0_level2_quad_clean.evt
Size (bytes)557,205,120108,360,000
Size531.4 MB 103.3 MB
Events in quadrant A3,570,555728,881
Events in quadrant B5,259,711723,570
Events in quadrant C3,879,436704,274
Events in quadrant D3,745,100691,710

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147292
B0194232
C0157262
D0153712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62131091.754386%
B62131993.202962%
C62132954.748109%
D6213861.384194%

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 7513 6214 0 0 0.00% 0.00%
B 7513 6214 2 2 0.03% 0.03%
C 7513 6214 48 48 0.64% 0.77%
D 7513 6214 2 2 0.03% 0.03%

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 13 254 10576 52.74 926 915 183.2
A 3 137 8681 42.39 926 915 183.2
A 0 226 7831 37.75 926 915 183.2
B 6 159 1635016 9716.68 906 887 168.2
B 0 183 27813 160.1 906 887 168.2
B 12 111 19822 112.59 906 887 168.2
C 0 10 245989 1206.17 888 900 203.2
C 14 238 146315 715.64 888 900 203.2
C 2 114 14109 65.01 888 900 203.2
D 8 195 262473 1241.5 908 890 210.7
D 7 64 29413 135.37 908 890 210.7
D 2 234 22214 101.21 908 890 210.7

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