ASTROSAT CZTI

Data Quality Report

Orbit 56482

Creation date: 2026-03-07T15:14:05.432901
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_060T01_9000006556_56482cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56482cztM0_level2_quad_clean.evt
Size (bytes)650,782,080107,225,280
Size620.6 MB 102.3 MB
Events in quadrant A5,651,519718,725
Events in quadrant B7,146,864632,590
Events in quadrant C4,145,295711,758
Events in quadrant D6,528,220629,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222860
B0267080
C0181200
D0248430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79603564.472362%
B7960191424.045226%
C79612002.512247%
D79616337.951262%

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 7960 7960 176 176 2.21% 2.21%
B 7960 7960 1180 1180 14.82% 14.82%
C 7961 7961 123 123 1.55% 1.55%
D 7961 7961 507 507 6.37% 6.37%

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 4 95 1305989 6108.75 862 840 213.7
A 7 64 286101 1335.16 862 840 213.7
A 12 3 285358 1331.69 862 840 213.7
B 5 172 3765795 22897.61 769 742 164.4
B 4 21 106536 643.4 769 742 164.4
B 0 63 101187 610.87 769 742 164.4
C 15 230 407330 1746.59 854 846 232.7
C 12 252 150356 642.42 854 846 232.7
C 12 249 131952 563.34 854 846 232.7
D 2 249 1389068 6006.29 823 787 231.1
D 12 4 507423 2191.92 823 787 231.1
D 11 176 398277 1719.71 823 787 231.1

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