ASTROSAT CZTI

Data Quality Report

Orbit 51432

Creation date: 2025-04-02T11:20:32.979342
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_090T01_9000006458_51432cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51432cztM0_level2_quad_clean.evt
Size (bytes)3,585,000,960339,073,920
Size3.3 GB 323.4 MB
Events in quadrant A29,476,0202,400,235
Events in quadrant B17,335,3912,848,419
Events in quadrant C60,926,970739,139
Events in quadrant D22,708,1732,263,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01079382
B0722942
C02009552
D0881302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05900
B05900
C05900
D05900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29295394513.466462%
B2929513054.454685%
C292952143073.152415%
D2929626028.881759%

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 30280 29296 2828 2828 9.34% 9.65%
B 30280 29296 796 796 2.63% 2.72%
C 30279 29294 20173 20173 66.62% 68.86%
D 30281 29298 2307 2307 7.62% 7.87%

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 12 250 5055889 6925.89 2955 2884 729.6
A 7 64 4473507 6127.65 2955 2884 729.6
A 12 3 3833686 5250.68 2955 2884 729.6
B 12 18 1207156 1843.09 3045 2931 653.4
B 15 52 774736 1181.26 3045 2931 653.4
B 5 185 531682 809.26 3045 2931 653.4
C 15 179 30760655 71157.45 1562 1551 432.3
C 4 12 19055572 44079.16 1562 1551 432.3
C 10 171 1484414 3430.42 1562 1551 432.3
D 7 60 4028452 5024.27 2903 2813 801.2
D 6 42 1973096 2459.05 2903 2813 801.2
D 3 12 1335088 1662.77 2903 2813 801.2

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