ASTROSAT CZTI

Data Quality Report

Orbit 20230310_A12_056T02_9000005538_level2

Creation date: 2023-03-21T10:24:03.722375
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/AS1A12_056T02_9000005538cztM0_level2.fits modeM0/AS1A12_056T02_9000005538cztM0_level2_quad_clean.evt
Size (bytes)5,491,952,6406,328,609,920
Size5.1 GB 5.9 GB
Events in quadrant A33,379,82640,103,673
Events in quadrant B32,224,81140,341,770
Events in quadrant C32,888,15138,055,761
Events in quadrant D26,028,38331,419,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014461050
B013794840
C013202940
D019102380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022980
B022970
C022950
D022990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124810
B0124820
C0124750
D0124590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60990799391.629593%
B61010673491.204545%
C60996249560.812510%
D6094078507013.959472%

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 868891 611088 0 0 0.00% 0.00%
B 868891 610553 0 0 0.00% 0.00%
C 868891 611137 0 0 0.00% 0.00%
D 868891 606914 0 0 0.00% 0.00%

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 7 110 27620 9.12 8735 8231 2127.1
A 9 19 27460 9.04 8735 8231 2127.1
A 0 29 27060 8.85 8735 8231 2127.1
B 2 9 27348 11.81 8532 8160 1625.1
B 3 80 23406 9.38 8532 8160 1625.1
B 3 17 22295 8.7 8532 8160 1625.1
C 1 81 27826 8.88 8691 8149 2216.3
C 1 80 26744 8.39 8691 8149 2216.3
C 3 202 25802 7.97 8691 8149 2216.3
D 7 3 19344 6.06 7445 6760 2078.2
D 10 189 19202 5.99 7445 6760 2078.2
D 6 38 18851 5.82 7445 6760 2078.2

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