ASTROSAT CZTI

Data Quality Report

Orbit 24135

Creation date: 2024-06-27T19:02:31.747438
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_069T01_9000003570_24135cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24135cztM0_level2_quad_clean.evt
Size (bytes)546,880,320105,759,360
Size521.5 MB 100.9 MB
Events in quadrant A3,738,539685,568
Events in quadrant B3,796,316694,334
Events in quadrant C3,987,079657,173
Events in quadrant D4,526,456638,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159132
B0160372
C0163522
D0184332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75661501.982554%
B75671792.365535%
C75662012.656622%
D75663344.414486%

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 8016 7567 2 2 0.02% 0.03%
B 8017 7568 0 0 0.00% 0.00%
C 8016 7568 1 1 0.01% 0.01%
D 8015 7567 205 205 2.56% 2.71%

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 2 250 18814 91.7 961 940 194.9
A 3 1 14128 67.66 961 940 194.9
A 13 254 13290 63.36 961 940 194.9
B 0 189 46829 247.38 949 927 185.6
B 12 111 22692 117.3 949 927 185.6
B 11 111 20082 103.23 949 927 185.6
C 10 91 266397 1241.06 908 913 213.9
C 14 238 142165 660.31 908 913 213.9
C 2 16 20949 93.66 908 913 213.9
D 7 238 662135 2936.23 922 897 225.2
D 1 52 158395 699.37 922 897 225.2
D 8 195 137051 604.59 922 897 225.2

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