ASTROSAT CZTI

Data Quality Report

Orbit 33692

Creation date: 2024-06-27T20:51:34.925560
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/AS1T04_090T01_9000004812_33692cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33692cztM0_level2_quad_clean.evt
Size (bytes)1,936,445,760175,852,800
Size1.8 GB 167.7 MB
Events in quadrant A26,987,368787,916
Events in quadrant B10,623,7781,161,310
Events in quadrant C8,652,2551,184,996
Events in quadrant D11,332,9751,110,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0909845
B0414164
C0348894
D0447384

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15626735347.056188%
B156269946.361193%
C156261591.017535%
D156264913.142199%

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 19803 15626 6982 6982 35.26% 44.68%
B 19804 15629 837 837 4.23% 5.36%
C 19804 15629 138 138 0.70% 0.88%
D 19804 15629 451 451 2.28% 2.89%

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 19936476 77439.21 1303 1278 257.4
A 15 237 1544244 5993.72 1303 1278 257.4
A 14 4 430892 1668.86 1303 1278 257.4
B 5 172 2813464 8432.4 1758 1709 333.4
B 0 213 248646 740.56 1758 1709 333.4
B 15 222 150309 445.65 1758 1709 333.4
C 15 214 667424 1659.6 1755 1768 401.1
C 3 233 532622 1323.51 1755 1768 401.1
C 0 10 418888 1039.95 1755 1768 401.1
D 8 195 2183222 5072.92 1750 1699 430.0
D 15 0 643910 1493.4 1750 1699 430.0
D 13 249 475065 1100.77 1750 1699 430.0

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