ASTROSAT CZTI

Data Quality Report

Orbit 54158

Creation date: 2025-10-02T05:29:57.014999
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_012T01_9000006512_54158cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54158cztM0_level2_quad_clean.evt
Size (bytes)540,253,440107,147,520
Size515.2 MB 102.2 MB
Events in quadrant A4,953,493671,043
Events in quadrant B4,527,587739,547
Events in quadrant C4,511,721656,852
Events in quadrant D5,362,791601,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207670
B0194840
C0197400
D0219850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82754625.583082%
B82752102.537764%
C8276981.184147%
D82762603.141614%

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 8550 8550 338 338 3.95% 3.95%
B 8550 8550 118 118 1.38% 1.38%
C 8551 8551 30 30 0.35% 0.35%
D 8551 8551 266 266 3.11% 3.11%

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 7 29 649550 3056.46 855 832 212.2
A 0 8 451733 2124.43 855 832 212.2
A 15 174 221156 1038.06 855 832 212.2
B 4 171 352931 1874.03 873 841 187.9
B 10 245 196092 1039.24 873 841 187.9
B 5 185 126802 670.44 873 841 187.9
C 9 38 759107 3170.35 866 856 239.2
C 15 157 65426 269.98 866 856 239.2
C 14 254 62968 259.7 866 856 239.2
D 8 176 1106437 4592.5 854 816 240.7
D 3 12 440435 1826.08 854 816 240.7
D 6 42 80718 331.9 854 816 240.7

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