ASTROSAT CZTI

Data Quality Report

Orbit 21847

Creation date: 2024-06-27T18:32:59.074513
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/AS1A07_004T01_9000003230_21847cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21847cztM0_level2_quad_clean.evt
Size (bytes)543,928,32076,953,600
Size518.7 MB 73.4 MB
Events in quadrant A3,514,106459,351
Events in quadrant B3,736,794470,210
Events in quadrant C3,572,489453,469
Events in quadrant D5,147,845432,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153391
B0157821
C0153391
D0204271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73902473.342355%
B73902783.761840%
C73912753.720741%
D73914646.277906%

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 7490 7390 1 1 0.01% 0.01%
B 7490 7390 11 11 0.15% 0.15%
C 7491 7391 1 1 0.01% 0.01%
D 7491 7392 232 232 3.10% 3.14%

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 4 2 32886 174.33 902 879 183.6
A 13 254 13821 70.49 902 879 183.6
A 3 137 7804 37.72 902 879 183.6
B 3 64 66401 372.37 904 878 176.0
B 0 197 53724 300.32 904 878 176.0
B 0 230 39082 217.11 904 878 176.0
C 14 238 134658 644.97 869 874 207.4
C 4 175 13066 58.78 869 874 207.4
C 5 112 11978 53.53 869 874 207.4
D 13 174 1023162 4379.6 864 843 233.4
D 1 52 329785 1409.18 864 843 233.4
D 7 238 326409 1394.72 864 843 233.4

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