ASTROSAT CZTI

Data Quality Report

Orbit 58443

Creation date: 2026-07-17T13:14:54.279700
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_045T01_9000006590_58443cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58443cztM0_level2_quad_clean.evt
Size (bytes)526,420,800114,589,440
Size502.0 MB 109.3 MB
Events in quadrant A4,123,641746,974
Events in quadrant B4,610,555782,948
Events in quadrant C5,479,008702,958
Events in quadrant D4,643,740674,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179173
B0193733
C0219173
D0195673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80914145.116796%
B80916818.416759%
C80916878.490916%
D80914125.092078%

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 9286 8091 29 29 0.31% 0.36%
B 9286 8092 185 185 1.99% 2.29%
C 9286 8091 330 330 3.55% 4.08%
D 9286 8092 123 123 1.32% 1.52%

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 4 249 143048 599.65 957 929 237.0
A 12 80 103538 432.94 957 929 237.0
A 13 248 95910 400.76 957 929 237.0
B 4 201 379149 1887.27 925 889 200.4
B 5 172 253777 1261.74 925 889 200.4
B 8 128 74726 368.4 925 889 200.4
C 5 10 1140789 4682.26 902 896 243.4
C 14 245 221047 904.3 902 896 243.4
C 6 223 216220 884.47 902 896 243.4
D 8 240 391181 1513.59 922 880 257.9
D 2 249 269419 1041.4 922 880 257.9
D 7 222 70466 269.86 922 880 257.9

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