ASTROSAT CZTI

Data Quality Report

Orbit 40079

Creation date: 2024-06-27T22:12:06.027782
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/AS1T05_086T01_9000005518_40079cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40079cztM0_level2_quad_clean.evt
Size (bytes)458,141,76092,024,640
Size436.9 MB 87.8 MB
Events in quadrant A3,258,879654,696
Events in quadrant B2,590,901676,832
Events in quadrant C5,934,113558,997
Events in quadrant D4,749,471512,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132353
B0113312
C0212982
D0180362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475931.698630%
B547560.109589%
C547585015.525114%
D547579414.502283%

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 7116 5476 64 64 0.90% 1.17%
B 7116 5476 1 1 0.01% 0.02%
C 7115 5475 748 748 10.51% 13.66%
D 7116 5476 675 675 9.49% 12.33%

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 10 83 476031 3833.07 601 591 124.0
A 13 248 349383 2812.01 601 591 124.0
A 2 79 68532 547.75 601 591 124.0
B 0 189 174038 1463.73 605 591 118.5
B 10 246 14165 114.55 605 591 118.5
B 12 111 13930 112.57 605 591 118.5
C 9 187 3103137 23282.64 560 565 133.3
C 15 214 214406 1604.73 560 565 133.3
C 10 20 208824 1562.84 560 565 133.3
D 1 47 1035549 7676.95 549 536 134.8
D 12 227 1005123 7451.28 549 536 134.8
D 2 250 169976 1256.78 549 536 134.8

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