ASTROSAT CZTI

Data Quality Report

Orbit 35249

Creation date: 2022-04-05T19:56:00.475433
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_047T09_9000005054_35249cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35249cztM0_level2_quad_clean.evt
Size (bytes)697,299,84087,333,120
Size665.0 MB 83.3 MB
Events in quadrant A3,066,121627,465
Events in quadrant B7,101,914534,333
Events in quadrant C2,975,140616,482
Events in quadrant D7,638,461515,778

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121333
B0245682
C0117272
D0262052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49911072.143859%
B4991162232.498497%
C49911262.524544%
D4991143428.731717%

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 7084 4992 97 97 1.37% 1.94%
B 7084 4992 1247 1247 17.60% 24.98%
C 7084 4992 91 91 1.28% 1.82%
D 7084 4992 1393 1393 19.66% 27.90%

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 7 3 441722 3531.19 628 619 124.9
A 10 83 95473 759.34 628 619 124.9
A 9 143 73764 585.55 628 619 124.9
B 5 236 4145784 39846.17 543 532 104.0
B 5 172 711104 6830.36 543 532 104.0
B 0 190 79072 754.96 543 532 104.0
C 0 10 400630 2887.48 600 605 138.5
C 15 214 212143 1526.93 600 605 138.5
C 15 159 15822 109.84 600 605 138.5
D 8 195 2604786 18211.81 553 543 143.0
D 7 80 1940263 13564.71 553 543 143.0
D 8 230 218208 1522.16 553 543 143.0

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