ASTROSAT CZTI

Data Quality Report

Orbit 24023

Creation date: 2024-06-27T19:01:15.139950
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/AS1A07_165T01_9000003558_24023cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24023cztM0_level2_quad_clean.evt
Size (bytes)450,452,160123,433,920
Size429.6 MB 117.7 MB
Events in quadrant A2,946,144834,770
Events in quadrant B3,023,760854,857
Events in quadrant C3,026,220818,963
Events in quadrant D4,219,104791,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127831
B0128741
C0129302
D0167631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281150.238815%
B6281240.382105%
C6281550.875657%
D6281701.114472%

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 7276 6282 0 0 0.00% 0.00%
B 7276 6282 1 1 0.01% 0.02%
C 7276 6282 0 0 0.00% 0.00%
D 7276 6282 37 37 0.51% 0.59%

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 6 16 11040 67.13 761 743 153.4
A 13 254 9390 56.37 761 743 153.4
A 3 137 6441 37.15 761 743 153.4
B 0 189 21605 144.87 762 744 144.0
B 12 111 17028 113.09 762 744 144.0
B 11 111 15307 101.13 762 744 144.0
C 14 238 117737 675.48 742 746 173.2
C 7 247 18198 100.76 742 746 173.2
C 13 61 5187 25.64 742 746 173.2
D 8 195 745167 4138.73 746 725 179.9
D 12 218 468676 2601.58 746 725 179.9
D 1 52 35467 193.15 746 725 179.9

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