ASTROSAT CZTI

Data Quality Report

Orbit 46884

Creation date: 2024-06-27T23:28:56.958354
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_053T01_9000006274_46884cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46884cztM0_level2_quad_clean.evt
Size (bytes)606,458,880114,511,680
Size578.4 MB 109.2 MB
Events in quadrant A7,129,067760,175
Events in quadrant B6,846,102755,853
Events in quadrant C3,397,592766,222
Events in quadrant D4,505,981672,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257802
B0255112
C0157012
D0189092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73614275.800842%
B736174310.093737%
C7361580.787936%
D73614826.548023%

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 7756 7362 82 82 1.06% 1.11%
B 7756 7363 280 280 3.61% 3.80%
C 7756 7363 23 23 0.30% 0.31%
D 7756 7363 353 353 4.55% 4.79%

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 3719891 22318.27 804 786 166.6
A 13 248 151832 906.42 804 786 166.6
A 9 191 123955 739.13 804 786 166.6
B 3 112 3295644 21135.34 790 763 155.9
B 4 171 199565 1275.23 790 763 155.9
B 15 36 77823 494.31 790 763 155.9
C 14 254 232711 1243.96 796 798 186.4
C 12 249 23551 122.04 796 798 186.4
C 1 3 18186 93.27 796 798 186.4
D 13 249 1051322 5418.65 775 748 193.9
D 1 52 166271 853.73 775 748 193.9
D 12 233 138138 708.63 775 748 193.9

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