ASTROSAT CZTI

Data Quality Report

Orbit 08855

Creation date: 2024-06-27T15:38:06.064246
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/AS1A03_036T01_9000001230_08855cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08855cztM0_level2_quad_clean.evt
Size (bytes)429,618,24091,728,000
Size409.7 MB 87.5 MB
Events in quadrant A3,461,784597,885
Events in quadrant B3,111,067606,156
Events in quadrant C2,693,268588,752
Events in quadrant D3,339,646568,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01424919
B0130493
C0121697
D01353613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59581191.997315%
B5961961.610468%
C5959330.553784%
D5957530.889710%

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 7062 5962 31 31 0.44% 0.52%
B 7062 5962 33 33 0.47% 0.55%
C 7062 5963 1 1 0.01% 0.02%
D 7062 5962 15 15 0.21% 0.25%

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 8 5 626220 4324.6 712 697 144.6
A 5 16 49646 338.41 712 697 144.6
A 15 174 21974 147.1 712 697 144.6
B 10 16 152799 1114.53 711 693 136.5
B 4 48 72891 529.02 711 693 136.5
B 0 214 55805 403.82 711 693 136.5
C 1 3 15926 95.96 685 688 158.8
C 13 61 5235 28.63 685 688 158.8
C 8 222 2410 10.84 685 688 158.8
D 8 195 413641 2250.92 684 672 183.5
D 13 105 115976 628.47 684 672 183.5
D 5 97 61497 331.53 684 672 183.5

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