ASTROSAT CZTI

Data Quality Report

Orbit 57319

Creation date: 2026-05-02T21:33:34.015870
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_57319cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57319cztM0_level2_quad_clean.evt
Size (bytes)436,455,36091,082,880
Size416.2 MB 86.9 MB
Events in quadrant A3,191,733609,351
Events in quadrant B3,946,828628,473
Events in quadrant C4,357,188556,269
Events in quadrant D4,184,620535,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137771
B0159351
C0173871
D0166491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123530.865589%
B61232944.801568%
C61233275.340519%
D61232103.429691%

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 7248 6123 17 17 0.23% 0.28%
B 7248 6123 206 206 2.84% 3.36%
C 7247 6122 301 301 4.15% 4.92%
D 7248 6123 171 171 2.36% 2.79%

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 451424 2682.11 676 659 168.1
A 3 14 77932 459.78 676 659 168.1
A 8 4 12107 68.12 676 659 168.1
B 2 249 570346 4121.62 650 628 138.2
B 10 16 341676 2467.31 650 628 138.2
B 1 223 163031 1174.9 650 628 138.2
C 15 224 1760755 10234.42 630 626 172.0
C 1 12 44506 255.14 630 626 172.0
C 14 254 34194 195.18 630 626 172.0
D 3 224 834032 4584.79 639 608 181.8
D 2 249 457490 2513.38 639 608 181.8
D 3 12 112670 616.47 639 608 181.8

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