ASTROSAT CZTI

Data Quality Report

Orbit 57663

Creation date: 2026-05-26T02:11:16.096969
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_125T09_9000006578_57663cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57663cztM0_level2_quad_clean.evt
Size (bytes)642,723,840142,853,760
Size612.9 MB 136.2 MB
Events in quadrant A4,254,065949,351
Events in quadrant B4,902,8891,006,526
Events in quadrant C7,283,419847,553
Events in quadrant D6,567,372822,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204761
B0221011
C0287951
D0265201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10099170.168333%
B100991391.376374%
C100996766.693732%
D100993773.733043%

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 10494 10100 9 9 0.09% 0.09%
B 10494 10100 61 61 0.58% 0.60%
C 10494 10100 518 518 4.94% 5.13%
D 10494 10100 354 354 3.37% 3.50%

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 8 4 78539 295.71 1059 1031 262.1
A 10 251 21666 78.73 1059 1031 262.1
A 3 245 17262 61.92 1059 1031 262.1
B 10 247 182370 806.88 1047 1007 224.8
B 5 185 140290 619.67 1047 1007 224.8
B 10 16 92320 406.25 1047 1007 224.8
C 15 224 1818243 6728.88 992 983 270.1
C 14 254 629887 2328.68 992 983 270.1
C 12 2 607711 2246.57 992 983 270.1
D 8 240 1208583 4264.85 1005 957 283.2
D 7 253 330360 1163.32 1005 957 283.2
D 3 12 295259 1039.36 1005 957 283.2

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