ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T20_9000003940_level2

Creation date: 2021-01-07T16:48:23.856775
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/AS1A09_038T20_9000003940cztM0_level2_bc.evt modeM0/AS1A09_038T20_9000003940cztM0_level2_quad_clean.evt
Size (bytes)215,830,08089,640,000
Size205.8 MB 85.5 MB
Events in quadrant A1,294,866588,296
Events in quadrant B1,306,097596,846
Events in quadrant C1,331,302571,186
Events in quadrant D2,191,283543,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123100
B0125520
C0129030
D0159070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59421482.490744%
B59421823.062942%
C59422323.904409%
D59424617.758331%

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 5962 5943 2 2 0.03% 0.03%
B 5962 5941 0 0 0.00% 0.00%
C 5962 5943 1 1 0.02% 0.02%
D 5962 5943 39 39 0.65% 0.66%

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 0 13 110040 1604.26 299 293 68.4
A 14 235 13897 198.86 299 293 68.4
A 6 16 11211 159.6 299 293 68.4
B 10 245 50870 828.73 302 295 61.0
B 0 244 27093 439.12 302 295 61.0
B 0 230 20946 338.39 302 295 61.0
C 7 221 216541 3062.43 288 284 70.6
C 2 16 4075 53.68 288 284 70.6
C 10 22 2157 26.52 288 284 70.6
D 1 52 933526 13684.86 287 276 68.2
D 7 80 46715 680.97 287 276 68.2
D 2 250 43228 629.83 287 276 68.2

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