ASTROSAT CZTI

Data Quality Report

Orbit 58327

Creation date: 2026-07-10T09:50:48.504933
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_044T03_9000006588_58327cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58327cztM0_level2_quad_clean.evt
Size (bytes)500,762,880112,176,000
Size477.6 MB 107.0 MB
Events in quadrant A4,059,575721,991
Events in quadrant B5,467,105758,961
Events in quadrant C4,035,047714,042
Events in quadrant D4,367,854658,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175921
B0215121
C0178261
D0183661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78063514.496541%
B78065827.455803%
C78062032.600564%
D78062903.715091%

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 7806 7806 59 59 0.76% 0.76%
B 7806 7806 159 159 2.04% 2.04%
C 7806 7806 81 81 1.04% 1.04%
D 7806 7806 97 97 1.24% 1.24%

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 13 248 218813 981.79 896 869 222.0
A 4 249 97873 436.98 896 869 222.0
A 2 143 85444 380.99 896 869 222.0
B 10 128 1489165 8048.15 870 839 184.9
B 4 201 110214 591.45 870 839 184.9
B 5 185 94717 507.65 870 839 184.9
C 12 16 428635 1825.12 867 857 234.4
C 12 252 38902 162.32 867 857 234.4
C 4 5 36969 154.07 867 857 234.4
D 11 176 363477 1487.51 874 837 243.8
D 11 129 184255 752.36 874 837 243.8
D 3 12 110117 448.25 874 837 243.8

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