ASTROSAT CZTI

Data Quality Report

Orbit 00701

Creation date: 2024-06-27T14:01:46.386907
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/AS1P01_141T01_9000000100_00701cztM0_level2.evt modeM0/AS1P01_141T01_9000000100_00701cztM0_level2_quad_clean.evt
Size (bytes)1,258,171,20060,984,000
Size1.2 GB 58.2 MB
Events in quadrant A8,524,051357,547
Events in quadrant B9,127,619354,339
Events in quadrant C9,986,442343,462
Events in quadrant D10,022,417321,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327672634
B0348552964
C0377843393
D0384223949

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015012
B015115
C015016
D015012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6772681.004135%
B67281051.560642%
C6715961.429635%
D66921372.047221%

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 7896 6929 367 367 4.65% 5.30%
B 7896 6890 522 522 6.61% 7.58%
C 7896 6877 531 531 6.72% 7.72%
D 7895 6867 648 648 8.21% 9.44%

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 8 9169 12.79 2219 2239 541.7
A 11 79 7839 10.34 2219 2239 541.7
A 3 111 6934 8.67 2219 2239 541.7
B 7 221 338666 624.07 2259 2276 539.0
B 5 247 93545 169.32 2259 2276 539.0
B 0 220 51925 92.11 2259 2276 539.0
C 3 95 435093 742.99 2060 2135 582.7
C 3 31 422144 720.77 2060 2135 582.7
C 3 15 401727 685.73 2060 2135 582.7
D 0 25 2079780 3297.18 2016 2085 630.1
D 12 233 203915 320.29 2016 2085 630.1
D 1 4 73115 112.72 2016 2085 630.1

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