ASTROSAT CZTI

Data Quality Report

Orbit 35542

Creation date: 2022-04-26T09:06:01.003783
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/AS1A11_046T08_9000005088_35542cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35542cztM0_level2_quad_clean.evt
Size (bytes)610,272,00087,350,400
Size582.0 MB 83.3 MB
Events in quadrant A6,882,639507,998
Events in quadrant B3,375,696579,254
Events in quadrant C3,409,663588,677
Events in quadrant D4,412,699554,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245833
B0139302
C0136502
D0172222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5938110818.659481%
B59381392.340856%
C5938911.532503%
D59382774.664870%

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 7252 5939 927 927 12.78% 15.61%
B 7252 5939 73 73 1.01% 1.23%
C 7252 5939 75 75 1.03% 1.26%
D 7252 5939 220 220 3.03% 3.70%

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 15 169 4235412 33705.91 623 611 125.6
A 10 83 137668 1090.87 623 611 125.6
A 9 143 84402 666.91 623 611 125.6
B 5 236 490151 3869.03 661 643 126.5
B 5 172 139932 1100.93 661 643 126.5
B 0 190 37364 290.24 661 643 126.5
C 0 10 479006 3181.79 651 656 150.3
C 15 214 268312 1780.34 651 656 150.3
C 9 187 49425 324.39 651 656 150.3
D 12 235 1008180 6302.11 645 627 159.9
D 8 195 337951 2109.92 645 627 159.9
D 12 6 247439 1543.78 645 627 159.9

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