ASTROSAT CZTI

Data Quality Report

Orbit 32785

Creation date: 2024-06-27T20:41:58.823872
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/AS1T04_064T01_9000004730_32785cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32785cztM0_level2_quad_clean.evt
Size (bytes)716,696,64052,925,760
Size683.5 MB 50.5 MB
Events in quadrant A3,962,852298,487
Events in quadrant B4,075,460335,680
Events in quadrant C3,505,471341,480
Events in quadrant D9,804,215254,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148483
B0156732
C0134322
D0327952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53055149.688973%
B53052785.240339%
C53052444.599434%
D5306200337.749717%

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 7277 5306 392 392 5.39% 7.39%
B 7277 5306 172 172 2.36% 3.24%
C 7277 5306 183 183 2.51% 3.45%
D 7278 5307 1923 1923 26.42% 36.24%

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 15 237 1196536 8879.81 681 672 134.7
A 14 238 70723 520.16 681 672 134.7
A 15 174 18104 129.44 681 672 134.7
B 0 219 417210 3179.51 706 692 131.0
B 5 172 413010 3147.45 706 692 131.0
B 12 1 250712 1908.54 706 692 131.0
C 0 10 667015 4303.84 680 688 154.8
C 3 233 50994 324.93 680 688 154.8
C 15 159 37391 237.07 680 688 154.8
D 8 195 5036140 30959.19 621 609 162.7
D 2 250 654949 4022.98 621 609 162.7
D 14 52 649106 3987.06 621 609 162.7

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