ASTROSAT CZTI

Data Quality Report

Orbit 35879

Creation date: 2022-06-08T21:15:22.556537
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_35879cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35879cztM0_level2_quad_clean.evt
Size (bytes)475,560,00079,755,840
Size453.5 MB 76.1 MB
Events in quadrant A3,107,816514,441
Events in quadrant B4,233,484511,404
Events in quadrant C2,987,625507,713
Events in quadrant D3,689,455485,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129313
B0163782
C0123452
D0146802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566280.141293%
B56625309.360650%
C5662701.236312%
D5662841.483575%

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 7244 5663 1 1 0.01% 0.02%
B 7244 5663 371 371 5.12% 6.55%
C 7244 5663 47 47 0.65% 0.83%
D 7244 5663 57 57 0.79% 1.01%

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 190608 1410.07 663 652 134.7
A 10 83 172009 1272.01 663 652 134.7
A 7 48 167876 1241.33 663 652 134.7
B 5 63 1068998 8640.35 639 622 123.6
B 5 172 423210 3417.63 639 622 123.6
B 4 232 80378 645.02 639 622 123.6
C 15 214 237381 1586.75 638 645 149.2
C 0 10 194918 1302.14 638 645 149.2
C 1 23 61142 405.49 638 645 149.2
D 8 195 741916 4737.87 635 619 156.5
D 7 223 188358 1199.9 635 619 156.5
D 13 249 166349 1059.24 635 619 156.5

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