ASTROSAT CZTI

Data Quality Report

Orbit 45755

Creation date: 2024-06-27T23:15:49.076484
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_183T01_9000006124_45755cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45755cztM0_level2_quad_clean.evt
Size (bytes)753,670,080118,304,640
Size718.8 MB 112.8 MB
Events in quadrant A7,050,745821,591
Events in quadrant B9,672,333709,564
Events in quadrant C4,432,466799,337
Events in quadrant D6,149,213716,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263970
B0342100
C0186760
D0236100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76841081.405518%
B7684163621.290994%
C76832833.683457%
D76835066.585969%

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 7684 7684 3 3 0.04% 0.04%
B 7684 7684 984 984 12.81% 12.81%
C 7683 7683 232 232 3.02% 3.02%
D 7683 7683 411 411 5.35% 5.35%

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 3580701 19580.2 864 845 182.8
A 14 235 35061 187.15 864 845 182.8
A 13 248 31750 169.04 864 845 182.8
B 3 112 4368721 27258.43 809 784 160.2
B 12 18 706044 4401.23 809 784 160.2
B 5 172 494295 3079.79 809 784 160.2
C 14 254 1082619 5488.55 835 843 197.1
C 3 233 45056 224.32 835 843 197.1
C 12 2 12990 61.63 835 843 197.1
D 1 52 1180937 5578.57 828 801 211.5
D 1 47 577710 2727.08 828 801 211.5
D 13 249 312598 1473.88 828 801 211.5

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