ASTROSAT CZTI

Data Quality Report

Orbit 19221

Creation date: 2024-06-27T18:00:22.638978
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_063T03_9000002840_19221cztM0_level2.evt modeM0/AS1A05_063T03_9000002840_19221cztM0_level2_quad_clean.evt
Size (bytes)519,549,120100,797,120
Size495.5 MB 96.1 MB
Events in quadrant A3,559,361645,787
Events in quadrant B3,531,338656,915
Events in quadrant C4,594,594633,528
Events in quadrant D3,571,772626,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152561
B0150431
C0187261
D0153521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7041911.292430%
B7041620.880557%
C70411281.817924%
D7041781.107797%

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 8196 7041 26 26 0.32% 0.37%
B 8196 7041 5 5 0.06% 0.07%
C 8196 7041 0 0 0.00% 0.00%
D 8196 7041 33 33 0.40% 0.47%

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 9 143 150592 841.32 885 867 178.0
A 13 254 8063 40.43 885 867 178.0
A 0 226 7558 37.6 885 867 178.0
B 12 111 19661 112.53 885 863 167.0
B 11 111 17483 99.5 885 863 167.0
B 0 214 16218 91.92 885 863 167.0
C 3 233 1102590 5525.02 860 870 199.4
C 14 238 135840 676.86 860 870 199.4
C 13 61 5997 25.71 860 870 199.4
D 11 176 137418 643.39 873 848 212.3
D 5 222 117136 547.84 873 848 212.3
D 2 234 29663 135.75 873 848 212.3

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