ASTROSAT CZTI

Data Quality Report

Orbit 26567

Creation date: 2024-06-27T19:30:34.228395
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/AS1A09_095T02_9000003846_26567cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26567cztM0_level2_quad_clean.evt
Size (bytes)33,027,8406,301,440
Size31.5 MB 6.0 MB
Events in quadrant A151,50741,540
Events in quadrant B149,20542,591
Events in quadrant C393,11235,428
Events in quadrant D279,80038,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06850
C014020
D010850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34200.000000%
B34200.000000%
C3419226.979472%
D34141.173021%

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 342 342 0 0 0.00% 0.00%
B 342 342 0 0 0.00% 0.00%
C 340 340 68 68 20.00% 20.00%
D 341 341 5 5 1.47% 1.47%

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 5 168 3901 399.37 37 36 9.7
A 6 16 913 90.62 37 36 9.7
A 13 254 693 67.89 37 36 9.7
B 12 111 940 96.48 37 36 9.4
B 3 112 934 95.84 37 36 9.4
B 11 111 762 77.48 37 36 9.4
C 4 254 246687 24848.36 34 34 9.9
C 14 238 5249 525.37 34 34 9.9
C 3 233 4058 405.39 34 34 9.9
D 7 80 123917 11500.59 37 36 10.8
D 1 52 14975 1386.87 37 36 10.8
D 2 234 1416 128.11 37 36 10.8

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