ASTROSAT CZTI

Data Quality Report

Orbit 26589

Creation date: 2024-06-27T19:30:45.187433
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/AS1A09_095T02_9000003846_26589cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26589cztM0_level2_quad_clean.evt
Size (bytes)520,194,240117,884,160
Size496.1 MB 112.4 MB
Events in quadrant A3,320,726807,058
Events in quadrant B4,052,578808,701
Events in quadrant C3,705,764767,808
Events in quadrant D4,258,345757,452

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136980
B0161230
C0150540
D0167460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6154701.137472%
B61551332.160845%
C61541482.404940%
D61542003.249919%

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 7424 6154 1 1 0.01% 0.02%
B 7425 6155 35 35 0.47% 0.57%
C 7424 6154 31 31 0.42% 0.50%
D 7423 6153 120 120 1.62% 1.95%

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 5 168 21754 125.71 848 836 166.4
A 0 13 18044 103.41 848 836 166.4
A 9 130 12865 72.29 848 836 166.4
B 0 189 595160 3942.75 825 810 150.7
B 3 64 154813 1021.61 825 810 150.7
B 0 229 26327 169.27 825 810 150.7
C 4 254 259008 1439.89 793 799 179.3
C 14 238 131502 728.86 793 799 179.3
C 15 208 111662 618.22 793 799 179.3
D 1 52 468616 2368.94 817 793 197.5
D 7 80 433987 2193.58 817 793 197.5
D 2 250 155753 784.68 817 793 197.5

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