ASTROSAT CZTI

Data Quality Report

Orbit 57306

Creation date: 2026-05-02T00:44:57.119214
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_57306cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57306cztM0_level2_quad_clean.evt
Size (bytes)400,374,72097,318,080
Size381.8 MB 92.8 MB
Events in quadrant A3,118,115650,836
Events in quadrant B3,238,778686,187
Events in quadrant C4,099,788597,024
Events in quadrant D3,871,008570,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136072
B0140322
C0166143
D0158702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335510.805051%
B63351452.288871%
C63341902.999684%
D63341251.973476%

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 7540 6336 13 13 0.17% 0.21%
B 7540 6336 61 61 0.81% 0.96%
C 7539 6335 160 160 2.12% 2.53%
D 7539 6335 124 124 1.64% 1.96%

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 209645 1194.03 708 689 175.0
A 8 4 80775 457.63 708 689 175.0
A 0 12 40465 227.29 708 689 175.0
B 8 234 171221 1138.09 695 670 149.9
B 5 185 86459 572.47 695 670 149.9
B 10 16 70550 466.31 695 670 149.9
C 15 224 1201067 6561.31 667 661 183.0
C 14 254 175741 956.97 667 661 183.0
C 12 252 32200 172.39 667 661 183.0
D 2 249 593196 3116.11 670 640 190.2
D 3 224 417550 2192.43 670 640 190.2
D 8 240 128812 674.03 670 640 190.2

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