ASTROSAT CZTI

Data Quality Report

Orbit 21497

Creation date: 2024-06-27T18:28:37.716546
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/AS1T03_141T01_9000003174_21497cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21497cztM0_level2_quad_clean.evt
Size (bytes)580,115,520103,728,960
Size553.2 MB 98.9 MB
Events in quadrant A3,293,900687,881
Events in quadrant B3,410,682698,552
Events in quadrant C3,305,287678,861
Events in quadrant D7,109,015613,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138430
B0141080
C0138890
D0255730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66381131.702320%
B66381241.868033%
C66381472.214522%
D6638111416.782163%

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 7527 6637 0 0 0.00% 0.00%
B 7527 6637 3 3 0.04% 0.05%
C 7527 6637 0 0 0.00% 0.00%
D 7527 6637 1095 1095 14.55% 16.50%

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 13 254 10775 58.35 854 838 170.3
A 0 226 7374 38.38 854 838 170.3
A 3 137 7002 36.19 854 838 170.3
B 0 190 33036 201.61 845 825 159.8
B 0 230 27690 168.15 845 825 159.8
B 3 64 21505 129.44 845 825 159.8
C 14 238 128307 676.72 813 820 188.4
C 13 61 5756 26.2 813 820 188.4
C 4 175 3657 15.06 813 820 188.4
D 1 52 3846153 18257.73 771 754 210.6
D 7 38 87999 414.23 771 754 210.6
D 14 35 68515 321.73 771 754 210.6

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