ASTROSAT CZTI

Data Quality Report

Orbit 40556

Creation date: 2024-06-27T22:17:32.293162
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/AS1A12_054T02_9000005550_40556cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40556cztM0_level2_quad_clean.evt
Size (bytes)977,656,320239,736,960
Size932.4 MB 228.6 MB
Events in quadrant A8,101,7261,656,186
Events in quadrant B8,923,3361,681,377
Events in quadrant C8,270,1621,613,856
Events in quadrant D9,684,3711,231,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339415
B0367464
C0350084
D0396434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15587320.205299%
B15587680.436261%
C155872181.398601%
D15587316920.331045%

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 19826 15590 9 9 0.05% 0.06%
B 19826 15590 40 40 0.20% 0.26%
C 19826 15590 182 182 0.92% 1.17%
D 19826 15589 271 271 1.37% 1.74%

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 10 83 1270977 3745.49 1671 1635 338.9
A 6 10 139796 407.67 1671 1635 338.9
A 12 189 138673 404.36 1671 1635 338.9
B 3 112 2008751 6293.48 1662 1613 318.9
B 0 230 118448 366.34 1662 1613 318.9
B 4 171 100727 310.78 1662 1613 318.9
C 14 254 978620 2577.01 1626 1634 379.1
C 15 214 669373 1761.31 1626 1634 379.1
C 10 20 153170 399.71 1626 1634 379.1
D 12 227 1788151 4906.34 1471 1427 364.2
D 2 250 776876 2129.38 1471 1427 364.2
D 12 191 715512 1960.88 1471 1427 364.2

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