ASTROSAT CZTI

Data Quality Report

Orbit 43840

Creation date: 2024-06-27T22:56:26.280283
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/AS1A13_018T01_9000005906_43840cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43840cztM0_level2_quad_clean.evt
Size (bytes)754,920,000121,109,760
Size719.9 MB 115.5 MB
Events in quadrant A6,027,231821,284
Events in quadrant B5,052,112847,263
Events in quadrant C8,410,535773,290
Events in quadrant D7,862,568691,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234990
B0201460
C0304600
D0287010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76614345.665057%
B76624245.533803%
C766294812.372749%
D7662110814.460976%

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 7661 7661 184 184 2.40% 2.40%
B 7662 7662 253 253 3.30% 3.30%
C 7662 7662 742 742 9.68% 9.68%
D 7662 7662 1015 1015 13.25% 13.25%

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 1272871 6791.95 896 878 187.3
A 10 83 1063747 5675.31 896 878 187.3
A 8 4 73793 389.34 896 878 187.3
B 5 172 681215 3861.88 887 859 176.2
B 0 200 306547 1735.17 887 859 176.2
B 4 170 220394 1246.14 887 859 176.2
C 3 233 4784465 23673.43 853 859 202.1
C 15 158 149267 734.45 853 859 202.1
C 14 254 70800 346.13 853 859 202.1
D 4 221 1236906 5737.5 843 817 215.4
D 5 235 1168742 5421.1 843 817 215.4
D 1 52 737100 3417.57 843 817 215.4

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