ASTROSAT CZTI

Data Quality Report

Orbit 25650

Creation date: 2024-06-27T19:19:57.037968
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/AS1A09_013T02_9000003734_25650cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25650cztM0_level2_quad_clean.evt
Size (bytes)440,317,440105,638,400
Size419.9 MB 100.7 MB
Events in quadrant A3,196,007699,621
Events in quadrant B3,148,677725,115
Events in quadrant C3,141,319680,793
Events in quadrant D3,425,644658,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131420
B0131080
C0131360
D0142920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227180.289064%
B6227340.546009%
C6227671.075960%
D6226210.337295%

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 7592 6228 0 0 0.00% 0.00%
B 7592 6228 1 1 0.01% 0.02%
C 7592 6228 0 0 0.00% 0.00%
D 7591 6227 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 8 192 136850 862.64 793 779 157.7
A 13 254 9047 52.42 793 779 157.7
A 3 137 6855 38.52 793 779 157.7
B 12 111 17590 114.67 798 780 146.6
B 11 111 15545 100.72 798 780 146.6
B 14 111 14350 92.57 798 780 146.6
C 14 238 125413 705.73 764 772 176.6
C 3 233 30385 167.67 764 772 176.6
C 2 16 5876 28.9 764 772 176.6
D 8 195 415879 2147.62 754 734 193.3
D 1 52 114953 590.88 754 734 193.3
D 2 234 24968 125.37 754 734 193.3

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