ASTROSAT CZTI

Data Quality Report

Orbit 42323

Creation date: 2024-06-27T22:38:58.351257
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/AS1C07_001T10_9000005796_42323cztM0_level2.fits modeM0/AS1C07_001T10_9000005796_42323cztM0_level2_quad_clean.evt
Size (bytes)1,060,623,360251,280,000
Size1011.5 MB 239.6 MB
Events in quadrant A13,680,6931,579,459
Events in quadrant B7,593,8961,713,039
Events in quadrant C7,410,6631,681,395
Events in quadrant D9,331,4431,524,810

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513704
B0340304
C0325144
D0394464

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1607210316.414883%
B160721130.703086%
C16072210.130662%
D160724402.737680%

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 21471 16076 887 887 4.13% 5.52%
B 21471 16076 78 78 0.36% 0.49%
C 21471 16076 6 6 0.03% 0.04%
D 21471 16076 391 391 1.82% 2.43%

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 15 223 5417180 15565.19 1709 1669 347.9
A 10 83 1556989 4470.28 1709 1669 347.9
A 15 252 40216 110.79 1709 1669 347.9
B 5 255 250953 760.94 1726 1678 327.6
B 5 172 217166 657.81 1726 1678 327.6
B 3 112 119341 359.18 1726 1678 327.6
C 15 214 680355 1728.53 1702 1712 392.6
C 9 54 28469 68.15 1702 1712 392.6
C 15 159 27758 66.34 1702 1712 392.6
D 1 52 761583 1849.59 1696 1648 410.9
D 5 32 322160 780.09 1696 1648 410.9
D 12 233 265374 641.88 1696 1648 410.9

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