ASTROSAT CZTI

Data Quality Report

Orbit 38939

Creation date: 2024-06-27T21:58:24.333972
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_064T01_9000005416_38939cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38939cztM0_level2_quad_clean.evt
Size (bytes)470,180,16092,079,360
Size448.4 MB 87.8 MB
Events in quadrant A2,859,898674,321
Events in quadrant B3,132,589659,798
Events in quadrant C2,673,266661,577
Events in quadrant D8,339,293432,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116883
B0126402
C0109502
D0283792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140170.330739%
B51402064.007782%
C514050.097276%
D5140177134.455253%

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 7174 5141 10 10 0.14% 0.19%
B 7174 5141 160 160 2.23% 3.11%
C 7174 5141 1 1 0.01% 0.02%
D 7173 5140 1846 1846 25.74% 35.91%

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 438912 3633.45 607 597 120.6
A 15 174 30519 248.04 607 597 120.6
A 13 248 17602 140.96 607 597 120.6
B 5 172 678608 6144.69 593 578 110.3
B 5 200 78543 706.56 593 578 110.3
B 0 155 19777 173.99 593 578 110.3
C 15 214 213641 1539.64 605 610 138.4
C 14 254 76378 547.6 605 610 138.4
C 0 10 12739 87.66 605 610 138.4
D 12 235 3301403 26292.7 524 511 125.5
D 12 227 1227815 9775.88 524 511 125.5
D 2 250 544277 4331.28 524 511 125.5

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