ASTROSAT CZTI

Data Quality Report

Orbit 35638

Creation date: 2022-05-02T17:09:42.174843
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/AS1A11_106T01_9000005102_35638cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35638cztM0_level2_quad_clean.evt
Size (bytes)739,512,00079,436,160
Size705.3 MB 75.8 MB
Events in quadrant A12,477,959299,788
Events in quadrant B3,270,662593,406
Events in quadrant C3,418,957591,844
Events in quadrant D2,892,845570,745

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404943
B0127852
C0134202
D0116932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4964493599.415794%
B49641893.807413%
C49641432.880741%
D4964310.624496%

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 7026 4965 4829 4829 68.73% 97.26%
B 7026 4966 137 137 1.95% 2.76%
C 7026 4966 121 121 1.72% 2.44%
D 7026 4966 32 32 0.46% 0.64%

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 15 169 10935587 147524.7 373 367 74.1
A 10 83 84053 1128.99 373 367 74.1
A 13 6 12969 170.01 373 367 74.1
B 5 172 817738 6942.45 617 602 117.7
B 0 189 22110 182.73 617 602 117.7
B 12 111 13928 113.22 617 602 117.7
C 0 10 539051 3763.84 622 630 143.1
C 7 220 232239 1619.07 622 630 143.1
C 15 214 205988 1435.56 622 630 143.1
D 2 153 154466 1023.76 625 611 150.3
D 12 217 118801 786.45 625 611 150.3
D 1 52 80087 528.84 625 611 150.3

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