ASTROSAT CZTI

Data Quality Report

Orbit 35830

Creation date: 2022-05-19T15:48:36.375174
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/AS1A10_071T19_9000005144_35830cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35830cztM0_level2_quad_clean.evt
Size (bytes)629,409,60060,759,360
Size600.3 MB 57.9 MB
Events in quadrant A5,538,096355,578
Events in quadrant B2,714,228416,981
Events in quadrant C2,799,839407,162
Events in quadrant D7,645,983282,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200163
B0115312
C0115572
D0262362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536898718.386736%
B5368310.577496%
C5368681.266766%
D5368206538.468703%

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 7041 5369 967 967 13.73% 18.01%
B 7040 5368 11 11 0.16% 0.20%
C 7040 5368 60 60 0.85% 1.12%
D 7041 5369 2088 2088 29.65% 38.89%

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 3120230 26907.53 577 566 115.9
A 10 83 126154 1083.21 577 566 115.9
A 13 6 41299 351.33 577 566 115.9
B 5 255 138049 1159.79 615 600 118.5
B 5 172 91479 766.83 615 600 118.5
B 4 232 20756 170.08 615 600 118.5
C 15 214 225605 1593.02 601 606 141.2
C 0 10 187702 1324.66 601 606 141.2
C 0 207 46481 324.8 601 606 141.2
D 2 250 3267742 27533.46 481 467 118.7
D 7 223 2159677 18195.75 481 467 118.7
D 13 249 135852 1140.9 481 467 118.7

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