ASTROSAT CZTI

Data Quality Report

Orbit 56145

Creation date: 2026-02-13T10:25:38.245222
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_083T03_9000006548_56145cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56145cztM0_level2_quad_clean.evt
Size (bytes)171,440,64021,168,000
Size163.5 MB 20.2 MB
Events in quadrant A941,643143,846
Events in quadrant B756,972156,942
Events in quadrant C2,217,640118,501
Events in quadrant D2,307,491107,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038720
B033720
C076690
D079340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1547362.327085%
B1548140.904393%
C154830619.767442%
D154836023.255814%

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 1547 1547 24 24 1.55% 1.55%
B 1548 1548 9 9 0.58% 0.58%
C 1548 1548 391 391 25.26% 25.26%
D 1548 1548 445 445 28.75% 28.75%

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 95275 2362.46 153 149 40.3
A 15 32 71245 1765.67 153 149 40.3
A 8 249 54935 1360.61 153 149 40.3
B 4 171 41641 1176.57 153 149 35.3
B 10 247 35931 1014.65 153 149 35.3
B 0 213 35321 997.36 153 149 35.3
C 9 38 1469740 37277.27 137 136 39.4
C 12 254 64938 1643.74 137 136 39.4
C 1 16 41350 1045.41 137 136 39.4
D 2 62 718751 17941.29 134 127 40.1
D 11 129 537958 13427.58 134 127 40.1
D 2 249 379930 9482.23 134 127 40.1

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