ASTROSAT CZTI

Data Quality Report

Orbit 57309

Creation date: 2026-05-02T19:45:34.890542
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_049T03_9000006570_57309cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57309cztM0_level2_quad_clean.evt
Size (bytes)447,952,320101,957,760
Size427.2 MB 97.2 MB
Events in quadrant A3,762,621670,718
Events in quadrant B3,799,293709,127
Events in quadrant C4,328,573624,845
Events in quadrant D4,142,694591,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161442
B0161542
C0179782
D0173532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70561061.502268%
B70561692.395125%
C70562082.947846%
D70561542.182540%

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 7686 7057 30 30 0.39% 0.43%
B 7686 7057 33 33 0.43% 0.47%
C 7686 7057 159 159 2.07% 2.25%
D 7686 7057 95 95 1.24% 1.35%

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 0 12 337619 1788.48 765 746 188.4
A 3 14 242657 1284.32 765 746 188.4
A 8 4 164538 869.58 765 746 188.4
B 5 185 353296 2155.03 752 722 163.6
B 7 252 177687 1081.66 752 722 163.6
B 10 16 75602 457.69 752 722 163.6
C 15 224 1259476 6347.26 730 723 198.3
C 14 254 100914 505.21 730 723 198.3
C 12 250 32168 158.56 730 723 198.3
D 3 224 532635 2583.01 730 699 205.9
D 8 240 378825 1836.13 730 699 205.9
D 2 31 108297 522.48 730 699 205.9

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