ASTROSAT CZTI

Data Quality Report

Orbit 17204

Creation date: 2024-06-27T17:33:32.358121
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/AS1A05_185T04_9000002548_17204cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17204cztM0_level2_quad_clean.evt
Size (bytes)1,343,062,080238,633,920
Size1.3 GB 227.6 MB
Events in quadrant A8,781,2861,523,580
Events in quadrant B9,207,1711,522,600
Events in quadrant C9,374,0111,456,629
Events in quadrant D12,042,3461,430,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384784
B0393674
C0394374
D0483814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187843101.650341%
B187843772.007027%
C187843751.996380%
D187847924.216354%

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 21019 18787 0 0 0.00% 0.00%
B 21019 18787 19 19 0.09% 0.10%
C 21019 18787 0 0 0.00% 0.00%
D 21019 18787 438 438 2.08% 2.33%

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 12 189 115096 247.81 2249 2195 455.6
A 4 2 20956 41.18 2249 2195 455.6
A 0 226 19891 38.84 2249 2195 455.6
B 7 220 218312 501.77 2242 2179 430.7
B 0 197 69636 156.61 2242 2179 430.7
B 12 111 52437 116.68 2242 2179 430.7
C 3 233 631531 1250.56 2151 2159 503.3
C 14 238 329129 649.69 2151 2159 503.3
C 13 61 15514 26.54 2151 2159 503.3
D 5 222 2481308 4742.86 2166 2102 522.7
D 13 189 487994 929.54 2166 2102 522.7
D 11 176 415695 791.23 2166 2102 522.7

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