ASTROSAT CZTI

Data Quality Report

Orbit 54782

Creation date: 2025-11-13T08:39:54.062095
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/AS1A14_103T01_9000006524_54782cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54782cztM0_level2_quad_clean.evt
Size (bytes)664,810,560128,885,760
Size634.0 MB 122.9 MB
Events in quadrant A4,111,879886,936
Events in quadrant B5,283,194914,452
Events in quadrant C8,052,668760,174
Events in quadrant D6,502,034750,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190303
B0218461
C02986112
D02563411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85081772.080395%
B85093233.795981%
C850686710.192805%
D85066757.935575%

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 8819 8512 71 71 0.81% 0.83%
B 8819 8512 144 144 1.63% 1.69%
C 8819 8512 724 724 8.21% 8.51%
D 8820 8513 563 563 6.38% 6.61%

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 0 8 198956 828.04 936 912 239.2
A 13 248 91885 380.37 936 912 239.2
A 5 240 51878 213.09 936 912 239.2
B 2 249 702150 3569.63 910 878 196.5
B 5 185 559195 2841.96 910 878 196.5
B 4 171 203751 1032.67 910 878 196.5
C 9 38 2831645 11731.08 865 859 241.3
C 13 3 870588 3604.25 865 859 241.3
C 14 254 551789 2283.11 865 859 241.3
D 15 94 950613 3725.3 879 837 255.0
D 15 170 655427 2567.5 879 837 255.0
D 14 52 368968 1443.92 879 837 255.0

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