ASTROSAT CZTI

Data Quality Report

Orbit 22035

Creation date: 2024-06-27T18:35:38.732327
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/AS1A07_134T01_9000003256_22035cztM0_level2.evt modeM0/AS1A07_134T01_9000003256_22035cztM0_level2_quad_clean.evt
Size (bytes)546,016,320108,103,680
Size520.7 MB 103.1 MB
Events in quadrant A3,646,906704,475
Events in quadrant B3,859,765711,259
Events in quadrant C3,609,994678,690
Events in quadrant D4,900,652647,617

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159432
B0164342
C0157312
D0197832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7641460.602015%
B7641941.230205%
C7641781.020809%
D76413694.829211%

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 7856 7642 0 0 0.00% 0.00%
B 7856 7642 22 22 0.28% 0.29%
C 7856 7642 0 0 0.00% 0.00%
D 7856 7641 293 293 3.73% 3.83%

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 5 16 40497 209.86 934 916 188.6
A 13 254 12873 63.4 934 916 188.6
A 0 226 8121 38.2 934 916 188.6
B 3 64 110484 608.09 929 904 180.2
B 0 197 42919 233.15 929 904 180.2
B 0 190 31131 167.74 929 904 180.2
C 14 238 140216 666.78 887 893 209.0
C 13 61 6198 25.39 887 893 209.0
C 8 128 4902 19.19 887 893 209.0
D 1 52 787853 3683.03 877 850 213.7
D 11 176 529332 2473.2 877 850 213.7
D 5 222 170673 794.74 877 850 213.7

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