ASTROSAT CZTI

Data Quality Report

Orbit 26546

Creation date: 2024-06-27T19:30:16.801597
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_9000003840_26546cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26546cztM0_level2_quad_clean.evt
Size (bytes)603,492,480105,295,680
Size575.5 MB 100.4 MB
Events in quadrant A3,655,123735,883
Events in quadrant B3,574,476744,450
Events in quadrant C4,910,347658,354
Events in quadrant D5,737,564637,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148400
B0143970
C0185990
D0211250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59091091.844644%
B59091372.318497%
C590975712.810966%
D590979113.386360%

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 7229 5909 26 26 0.36% 0.44%
B 7229 5909 40 40 0.55% 0.68%
C 7229 5909 490 490 6.78% 8.29%
D 7229 5909 666 666 9.21% 11.27%

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 0 13 423331 2645.5 821 810 159.7
A 5 168 64914 401.37 821 810 159.7
A 13 254 10735 62.14 821 810 159.7
B 3 64 357937 2422.25 808 792 147.4
B 3 112 24529 160.99 808 792 147.4
B 5 172 23222 152.13 808 792 147.4
C 4 254 1580003 9570.92 726 733 165.0
C 3 233 380106 2299.13 726 733 165.0
C 14 238 120490 725.77 726 733 165.0
D 1 52 1712229 9814.33 742 726 174.4
D 7 80 904757 5184.01 742 726 174.4
D 2 250 225427 1288.51 742 726 174.4

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