ASTROSAT CZTI

Data Quality Report

Orbit 21571

Creation date: 2024-06-27T18:29:38.718795
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_155T02_9000003200_21571cztM0_level2.evt modeM0/AS1A05_155T02_9000003200_21571cztM0_level2_quad_clean.evt
Size (bytes)557,539,20095,492,160
Size531.7 MB 91.1 MB
Events in quadrant A3,886,022589,153
Events in quadrant B4,091,924600,428
Events in quadrant C3,986,432582,361
Events in quadrant D4,385,801571,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01666944
B01704747
C01684545
D01827438

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78743534.483109%
B78733714.712308%
C78733404.318557%
D78783484.417365%

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 7988 7895 0 0 0.00% 0.00%
B 7988 7887 9 9 0.11% 0.11%
C 7988 7891 0 0 0.00% 0.00%
D 7988 7895 67 67 0.84% 0.85%

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 13 254 9683 42.35 1008 981 205.5
A 0 226 8808 38.09 1008 981 205.5
A 3 137 8633 37.24 1008 981 205.5
B 3 64 52057 262.11 998 973 194.9
B 0 230 43028 215.78 998 973 194.9
B 0 190 32434 161.43 998 973 194.9
C 14 238 149887 648.23 972 976 229.7
C 3 233 25498 106.75 972 976 229.7
C 0 239 10209 40.19 972 976 229.7
D 7 38 219625 905.75 994 964 241.4
D 13 153 101342 415.79 994 964 241.4
D 2 136 100363 411.73 994 964 241.4

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