ASTROSAT CZTI

Data Quality Report

Orbit 38369

Creation date: 2024-06-27T21:51:59.644910
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_006T07_9000005376_38369cztM0_level2.fits modeM0/AS1A12_006T07_9000005376_38369cztM0_level2_quad_clean.evt
Size (bytes)1,320,356,160232,315,200
Size1.2 GB 221.6 MB
Events in quadrant A7,915,7651,628,454
Events in quadrant B7,173,8911,687,878
Events in quadrant C7,415,5841,614,993
Events in quadrant D25,227,0151,080,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322624
B0308993
C0309693
D0853683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14801950.641849%
B14801390.263496%
C14801750.506723%
D14801445030.065536%

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 19039 14804 57 57 0.30% 0.39%
B 19039 14804 5 5 0.03% 0.03%
C 19039 14804 54 54 0.28% 0.36%
D 19039 14804 4764 4764 25.02% 32.18%

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 886360 2624.92 1672 1636 337.0
A 9 143 363796 1074.51 1672 1636 337.0
A 12 189 86210 250.92 1672 1636 337.0
B 0 183 281018 874.49 1668 1623 319.5
B 4 21 102053 314.34 1668 1623 319.5
B 0 229 56757 172.57 1668 1623 319.5
C 15 214 606265 1588.23 1641 1650 380.7
C 5 250 322207 842.05 1641 1650 380.7
C 14 254 27887 68.92 1641 1650 380.7
D 10 203 11540606 32280.05 1470 1429 357.5
D 12 227 2034282 5686.76 1470 1429 357.5
D 1 20 1807958 5053.64 1470 1429 357.5

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