ASTROSAT CZTI

Data Quality Report

Orbit 51199

Creation date: 2025-03-17T12:54:52.222999
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/AS1C07_001T01_9000006454_51199cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51199cztM0_level2_quad_clean.evt
Size (bytes)2,060,962,560221,572,800
Size1.9 GB 211.3 MB
Events in quadrant A12,363,6731,615,978
Events in quadrant B14,192,1111,587,052
Events in quadrant C28,058,305991,060
Events in quadrant D20,272,7501,257,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493984
B0546984
C09586912
D0729144

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182106233.421197%
B18211208111.427159%
C18210710839.033498%
D18211307916.907364%

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 19765 18215 249 249 1.26% 1.37%
B 19766 18216 1358 1358 6.87% 7.45%
C 19766 18213 6372 6372 32.24% 34.99%
D 19766 18215 2522 2522 12.76% 13.85%

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 12 3 2542726 5359.99 1899 1852 474.0
A 12 194 304497 638.43 1899 1852 474.0
A 13 248 269179 563.93 1899 1852 474.0
B 12 32 3251636 8527.0 1803 1741 381.1
B 5 172 460299 1203.15 1803 1741 381.1
B 0 213 428341 1119.3 1803 1741 381.1
C 4 12 14517146 35178.86 1475 1460 412.6
C 15 253 1454698 3521.93 1475 1460 412.6
C 1 60 1096308 2653.37 1475 1460 412.6
D 2 62 6319079 12598.82 1763 1703 501.4
D 8 176 1446597 2881.57 1763 1703 501.4
D 7 126 784927 1561.99 1763 1703 501.4

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