ASTROSAT CZTI

Data Quality Report

Orbit 48082

Creation date: 2024-08-20T12:13:00.671401
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/AS1A13_071T07_9000006398_48082cztM0_level2.fits modeM0/AS1A13_071T07_9000006398_48082cztM0_level2_quad_clean.evt
Size (bytes)356,725,44076,262,400
Size340.2 MB 72.7 MB
Events in quadrant A6,216,475639,822
Events in quadrant B1,052,70039,172
Events in quadrant C2,665,440632,831
Events in quadrant D2,803,226581,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225341
B064561
C0124661
D0128711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59112033.434275%
B59115911100.000000%
C5911300.507528%
D5911330.558281%

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 7026 5912 54 54 0.77% 0.91%
B 7025 5910 1 1 0.01% 0.02%
C 7026 5912 18 18 0.26% 0.30%
D 7026 5912 24 24 0.34% 0.41%

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 3722562 27961.77 631 618 133.1
A 13 248 39678 293.45 631 618 133.1
A 13 254 10834 76.75 631 618 133.1
B 2 177 815389 79690.41 40 39 10.2
B 4 21 61835 6039.8 40 39 10.2
B 5 32 7883 766.65 40 39 10.2
C 14 254 207858 1431.23 618 623 144.8
C 12 250 16722 111.18 618 623 144.8
C 3 233 10598 68.89 618 623 144.8
D 2 249 211198 1364.02 618 600 154.4
D 2 37 47864 306.12 618 600 154.4
D 13 29 34061 216.72 618 600 154.4

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