ASTROSAT CZTI

Data Quality Report

Orbit 32891

Creation date: 2024-06-27T20:43:10.059628
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/AS1A11_005T05_9000004744_32891cztM0_level2.evt modeM0/AS1A11_005T05_9000004744_32891cztM0_level2_quad_clean.evt
Size (bytes)572,195,52063,348,480
Size545.7 MB 60.4 MB
Events in quadrant A3,926,921389,230
Events in quadrant B3,347,781400,774
Events in quadrant C2,897,592397,716
Events in quadrant D6,765,931326,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153843
B0135582
C0121942
D0240792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775250.432900%
B57751773.064935%
C5775360.623377%
D577583714.493506%

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 9451 5777 0 0 0.00% 0.00%
B 9451 5777 104 104 1.10% 1.80%
C 9451 5777 21 21 0.22% 0.36%
D 9451 5777 643 643 6.80% 11.13%

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 14 63 1268910 9226.19 681 667 137.5
A 13 6 14282 99.05 681 667 137.5
A 13 254 10754 73.38 681 667 137.5
B 5 172 585286 4514.78 678 663 129.5
B 5 255 24157 181.43 678 663 129.5
B 0 219 18306 136.25 678 663 129.5
C 0 10 171882 1116.22 664 669 153.4
C 14 67 80571 520.92 664 669 153.4
C 7 247 11458 70.34 664 669 153.4
D 8 195 2283537 14303.32 618 602 159.6
D 12 218 895025 5603.85 618 602 159.6
D 12 33 230928 1443.07 618 602 159.6

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