ASTROSAT CZTI

Data Quality Report

Orbit 35559

Creation date: 2022-04-26T19:01:39.361269
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_093T01_9000005090_35559cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35559cztM0_level2_quad_clean.evt
Size (bytes)348,105,60054,601,920
Size332.0 MB 52.1 MB
Events in quadrant A2,617,722327,909
Events in quadrant B2,606,822338,878
Events in quadrant C2,544,414342,260
Events in quadrant D2,465,346325,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107001
B0105941
C0101241
D0101761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452750.110448%
B45271052.319417%
C4527310.684780%
D4527461.016125%

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 4527 4527 0 0 0.00% 0.00%
B 4527 4527 60 60 1.33% 1.33%
C 4527 4527 28 28 0.62% 0.62%
D 4527 4527 31 31 0.68% 0.68%

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 522383 4986.27 514 503 104.7
A 10 83 90361 858.54 514 503 104.7
A 13 6 12265 112.38 514 503 104.7
B 5 172 476243 4794.6 512 498 99.2
B 0 189 43574 434.12 512 498 99.2
B 0 190 37296 370.85 512 498 99.2
C 0 10 275400 2313.9 509 513 118.8
C 15 214 200081 1679.89 509 513 118.8
C 0 239 60056 501.21 509 513 118.8
D 8 195 145138 1176.35 506 493 123.0
D 13 249 91152 737.3 506 493 123.0
D 2 250 55981 451.26 506 493 123.0

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