ASTROSAT CZTI

Data Quality Report

Orbit 20201129_A10_021T03_9000004038_level2

Creation date: 2021-01-07T05:12:27.189551
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_021T03_9000004038cztM0_level2_bc.evt modeM0/AS1A10_021T03_9000004038cztM0_level2_quad_clean.evt
Size (bytes)1,614,366,720418,654,080
Size1.5 GB 399.3 MB
Events in quadrant A7,893,9002,687,604
Events in quadrant B9,656,9642,699,138
Events in quadrant C8,083,6392,607,114
Events in quadrant D21,011,6932,421,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706310
B0780130
C0733940
D01246480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06720
B06720
C06720
D06720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A329444561.384167%
B329445701.730209%
C329456712.036728%
D32945416712.648353%

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 40224 32938 2 2 0.00% 0.01%
B 40224 32938 3 3 0.01% 0.01%
C 40225 32940 1 1 0.00% 0.00%
D 40225 32939 376 376 0.93% 1.14%

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 56460 126.96 2034 2006 428.9
A 8 192 27169 58.67 2034 2006 428.9
A 0 247 13920 27.78 2034 2006 428.9
B 10 245 1591481 4319.3 2022 1985 368.0
B 15 32 119432 319.15 2022 1985 368.0
B 0 190 68735 181.39 2022 1985 368.0
C 15 208 249150 547.39 1953 1956 451.6
C 2 16 184759 404.8 1953 1956 451.6
C 3 233 149858 327.51 1953 1956 451.6
D 1 52 8020726 19117.05 1893 1848 419.5
D 7 80 2840328 6766.95 1893 1848 419.5
D 8 195 1153207 2744.85 1893 1848 419.5

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