ASTROSAT CZTI

Data Quality Report

Orbit 20220101_A11_046T03_9000004834_level2

Creation date: 2022-01-03T12:53:40.895755
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_046T03_9000004834cztM0_level2_bc.evt modeM0/AS1A11_046T03_9000004834cztM0_level2_quad_clean.evt
Size (bytes)1,961,951,040506,502,720
Size1.8 GB 483.0 MB
Events in quadrant A9,179,8683,107,269
Events in quadrant B12,695,8153,222,016
Events in quadrant C11,371,9683,254,193
Events in quadrant D23,469,5943,032,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01390
B01390
C01390
D01390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0927710
B0993170
C0882820
D01331730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08140
B08140
C08140
D08140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3965721535.429054%
B3965717074.304410%
C396573320.837179%
D3965622405.648578%

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 57504 39661 2 2 0.00% 0.01%
B 57504 39658 43 43 0.07% 0.11%
C 57504 39658 13 13 0.02% 0.03%
D 57504 39657 224 224 0.39% 0.56%

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 1236504 2816.62 1998 1966 438.3
A 13 6 121359 272.4 1998 1966 438.3
A 13 254 59679 131.67 1998 1966 438.3
B 5 172 3556217 8921.21 2024 1980 398.4
B 0 229 195973 486.93 2024 1980 398.4
B 15 222 183654 456.0 2024 1980 398.4
C 15 214 1608068 3530.46 2004 1992 454.9
C 3 233 716593 1570.83 2004 1992 454.9
C 0 10 627020 1373.93 2004 1992 454.9
D 8 195 8585310 18009.89 1981 1921 476.6
D 12 235 1700000 3562.95 1981 1921 476.6
D 13 249 1167937 2446.56 1981 1921 476.6

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