ASTROSAT CZTI

Data Quality Report

Orbit 21084

Creation date: 2024-06-27T18:23:23.961244
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/AS1A05_163T01_9000003118_21084cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21084cztM0_level2_quad_clean.evt
Size (bytes)338,699,52049,507,200
Size323.0 MB 47.2 MB
Events in quadrant A2,011,422311,080
Events in quadrant B2,324,902308,392
Events in quadrant C2,030,895300,851
Events in quadrant D3,607,087285,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087191
B096121
C086711
D0135941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4158561.346801%
B41581172.813853%
C4158801.924002%
D415852012.506013%

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 5113 4159 0 0 0.00% 0.00%
B 5113 4159 29 29 0.57% 0.70%
C 5113 4159 0 0 0.00% 0.00%
D 5113 4159 386 386 7.55% 9.28%

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 13 254 6286 54.73 519 508 105.6
A 13 34 5582 48.06 519 508 105.6
A 0 226 4477 37.59 519 508 105.6
B 7 220 215273 2148.17 515 501 100.0
B 0 219 36124 356.3 515 501 100.0
B 0 190 18605 181.08 515 501 100.0
C 14 238 77663 643.4 499 502 119.9
C 9 54 8360 65.52 499 502 119.9
C 13 61 3493 24.94 499 502 119.9
D 1 52 923107 7601.02 486 472 121.4
D 1 239 547380 4505.64 486 472 121.4
D 2 14 87662 718.3 486 472 121.4

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