ASTROSAT CZTI

Data Quality Report

Orbit 35458

Creation date: 2022-04-21T01:01:06.352648
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_095T06_9000005078_35458cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35458cztM0_level2_quad_clean.evt
Size (bytes)716,728,320108,636,480
Size683.5 MB 103.6 MB
Events in quadrant A3,785,176708,113
Events in quadrant B8,707,366659,264
Events in quadrant C4,273,133695,180
Events in quadrant D4,396,615668,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164313
B0311942
C0174362
D0182992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8030140.174346%
B8030166620.747198%
C80301191.481943%
D80301551.930262%

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 10866 8033 0 0 0.00% 0.00%
B 10866 8033 1207 1207 11.11% 15.03%
C 10866 8033 77 77 0.71% 0.96%
D 10866 8033 134 134 1.23% 1.67%

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 151234 794.01 937 918 189.3
A 13 6 14589 72.21 937 918 189.3
A 13 254 11693 56.92 937 918 189.3
B 5 236 4721838 28215.5 861 835 167.3
B 5 200 203227 1209.61 861 835 167.3
B 5 172 161659 961.18 861 835 167.3
C 0 10 339463 1593.48 907 913 212.5
C 15 214 322923 1515.63 907 913 212.5
C 0 207 66024 306.46 907 913 212.5
D 13 249 350159 1573.69 906 880 221.9
D 2 153 124345 556.28 906 880 221.9
D 12 233 110010 491.69 906 880 221.9

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