ASTROSAT CZTI

Data Quality Report

Orbit 16911

Creation date: 2024-06-27T17:29:25.134838
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/AS1T03_030T01_9000002512_16911cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16911cztM0_level2_quad_clean.evt
Size (bytes)673,251,840102,663,360
Size642.1 MB 97.9 MB
Events in quadrant A7,671,915614,256
Events in quadrant B3,899,295686,550
Events in quadrant C3,755,001659,375
Events in quadrant D4,545,125616,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280561
B0164651
C0160391
D0187541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7649134617.597072%
B76491471.921820%
C76491532.000261%
D76495997.831089%

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 7900 7652 815 815 10.32% 10.65%
B 7900 7652 2 2 0.03% 0.03%
C 7900 7652 0 0 0.00% 0.00%
D 7900 7652 176 176 2.23% 2.30%

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 15 174 4160814 23078.49 879 859 180.3
A 12 189 84389 463.41 879 859 180.3
A 15 190 23822 127.39 879 859 180.3
B 15 35 124819 690.27 933 908 179.5
B 0 229 34236 185.66 933 908 179.5
B 0 198 29319 158.27 933 908 179.5
C 14 238 135555 636.37 896 902 211.6
C 3 233 105495 494.31 896 902 211.6
C 8 128 10806 46.81 896 902 211.6
D 1 52 1052893 4851.22 885 859 216.9
D 15 0 40492 182.76 885 859 216.9
D 15 145 39731 179.25 885 859 216.9

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