ASTROSAT CZTI

Data Quality Report

Orbit 39604

Creation date: 2024-06-27T22:06:41.102814
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/AS1A12_018T01_9000005488_39604cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39604cztM0_level2_quad_clean.evt
Size (bytes)404,576,64096,249,600
Size385.8 MB 91.8 MB
Events in quadrant A3,005,397668,923
Events in quadrant B2,715,375674,371
Events in quadrant C5,306,408616,538
Events in quadrant D3,534,188581,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123453
B0116712
C0194682
D0140732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5338140.262271%
B5338551.030348%
C53383566.669164%
D53382174.065193%

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 7221 5339 5 5 0.07% 0.09%
B 7221 5339 31 31 0.43% 0.58%
C 7221 5339 344 344 4.76% 6.44%
D 7221 5339 167 167 2.31% 3.13%

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 456854 3631.79 618 605 125.6
A 15 222 140424 1112.97 618 605 125.6
A 13 254 7975 58.67 618 605 125.6
B 5 255 221267 1890.81 612 596 116.7
B 5 172 79138 672.98 612 596 116.7
B 12 111 13994 114.8 612 596 116.7
C 9 187 2227880 16260.47 597 602 137.0
C 15 208 350267 2552.77 597 602 137.0
C 15 214 234115 1704.79 597 602 137.0
D 12 227 665468 4540.28 599 584 146.4
D 12 233 133699 909.0 599 584 146.4
D 13 249 125207 851.01 599 584 146.4

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