ASTROSAT CZTI

Data Quality Report

Orbit 35905

Creation date: 2024-06-27T21:19:49.634256
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/AS1A11_080T01_9000005146_35905cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35905cztM0_level2_quad_clean.evt
Size (bytes)578,185,920104,051,520
Size551.4 MB 99.2 MB
Events in quadrant A3,071,101711,740
Events in quadrant B3,487,420700,026
Events in quadrant C3,242,444697,042
Events in quadrant D7,293,900613,592

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128603
B0142892
C0131092
D0259422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133130.211968%
B61331392.266428%
C6133691.125061%
D613392815.131257%

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 8758 6135 2 2 0.02% 0.03%
B 8758 6135 87 87 0.99% 1.42%
C 8758 6135 44 44 0.50% 0.72%
D 8758 6135 1070 1070 12.22% 17.44%

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 176838 1171.17 734 721 150.4
A 15 169 44591 291.73 734 721 150.4
A 13 254 10770 66.83 734 721 150.4
B 5 172 443407 3201.13 719 703 138.3
B 0 213 93795 673.14 719 703 138.3
B 5 255 87330 626.39 719 703 138.3
C 15 214 258408 1547.37 709 717 166.5
C 0 10 141320 844.29 709 717 166.5
C 9 69 79861 475.24 709 717 166.5
D 12 227 3550233 20772.63 684 666 170.9
D 8 195 430190 2513.64 684 666 170.9
D 10 118 223128 1301.88 684 666 170.9

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