ASTROSAT CZTI

Data Quality Report

Orbit 57370

Creation date: 2026-05-06T08:47:05.004668
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_102T01_9000006572_57370cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57370cztM0_level2_quad_clean.evt
Size (bytes)601,646,400106,179,840
Size573.8 MB 101.3 MB
Events in quadrant A4,355,498698,319
Events in quadrant B4,352,521725,704
Events in quadrant C7,988,013590,661
Events in quadrant D4,903,230598,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191570
B0193310
C0298230
D0208860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8657280.323438%
B86561151.328558%
C8657101511.724616%
D86571291.490124%

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 8939 8939 7 7 0.08% 0.08%
B 8938 8938 56 56 0.63% 0.63%
C 8939 8939 882 882 9.87% 9.87%
D 8939 8939 130 130 1.45% 1.45%

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 3 14 332286 1423.76 939 913 232.7
A 0 12 163378 698.04 939 913 232.7
A 8 4 113492 483.7 939 913 232.7
B 5 185 190816 942.73 935 899 201.5
B 7 252 90772 446.12 935 899 201.5
B 4 201 72924 357.52 935 899 201.5
C 15 224 4114528 17414.59 869 859 236.2
C 12 252 150582 633.83 869 859 236.2
C 6 223 69207 289.34 869 859 236.2
D 2 249 544692 2152.06 902 863 252.7
D 15 142 274546 1083.03 902 863 252.7
D 8 240 122996 483.31 902 863 252.7

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