ASTROSAT CZTI

Data Quality Report

Orbit 24258

Creation date: 2024-06-27T19:04:02.193321
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/AS1A07_118T01_9000003586_24258cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24258cztM0_level2_quad_clean.evt
Size (bytes)557,029,440109,330,560
Size531.2 MB 104.3 MB
Events in quadrant A3,463,135725,928
Events in quadrant B3,486,154755,838
Events in quadrant C3,427,878723,350
Events in quadrant D6,066,987667,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143182
B0143992
C0141402
D0223892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291791.255762%
B6291871.382928%
C6291851.351137%
D62915478.694961%

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 7576 6291 36 36 0.48% 0.57%
B 7576 6291 12 12 0.16% 0.19%
C 7576 6292 0 0 0.00% 0.00%
D 7576 6292 448 448 5.91% 7.12%

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 6 16 194805 1157.27 848 831 167.6
A 13 254 9903 54.12 848 831 167.6
A 0 226 7239 38.23 848 831 167.6
B 12 17 82585 512.34 857 837 159.6
B 0 229 28155 171.21 857 837 159.6
B 12 111 18381 109.95 857 837 159.6
C 14 238 133674 687.78 833 841 193.1
C 7 247 22168 110.43 833 841 193.1
C 2 16 15736 77.12 833 841 193.1
D 8 195 1129725 5802.96 804 783 194.5
D 1 52 900106 4622.68 804 783 194.5
D 7 238 516840 2652.62 804 783 194.5

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