ASTROSAT CZTI

Data Quality Report

Orbit 46767

Creation date: 2024-06-27T23:27:23.794536
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_053T01_9000006266_46767cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46767cztM0_level2_quad_clean.evt
Size (bytes)490,800,960111,484,800
Size468.1 MB 106.3 MB
Events in quadrant A6,806,945727,004
Events in quadrant B3,393,144772,917
Events in quadrant C3,106,116735,768
Events in quadrant D4,317,787652,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246102
B0150506
C0144372
D01789711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70054055.781585%
B70021321.885176%
C7005610.870807%
D70023625.169951%

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 7730 7005 90 90 1.16% 1.28%
B 7730 7005 13 13 0.17% 0.19%
C 7730 7005 5 5 0.06% 0.07%
D 7730 7004 288 288 3.73% 4.11%

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 3427207 21978.83 753 737 155.9
A 9 191 280810 1796.51 753 737 155.9
A 13 248 155985 995.83 753 737 155.9
B 4 171 172176 1147.1 764 740 149.5
B 0 190 45045 296.45 764 740 149.5
B 5 172 44312 291.54 764 740 149.5
C 14 254 77758 439.11 755 757 175.4
C 14 220 68106 384.07 755 757 175.4
C 1 241 9611 50.49 755 757 175.4
D 13 249 393853 2140.74 739 716 183.6
D 1 52 307853 1672.45 739 716 183.6
D 10 181 256966 1395.35 739 716 183.6

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