ASTROSAT CZTI

Data Quality Report

Orbit 57617

Creation date: 2026-05-22T23:28:36.213828
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_070T08_9000006576_57617cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57617cztM0_level2_quad_clean.evt
Size (bytes)473,264,640107,688,960
Size451.3 MB 102.7 MB
Events in quadrant A3,489,286705,850
Events in quadrant B3,628,587760,378
Events in quadrant C5,444,936657,426
Events in quadrant D4,376,100618,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159980
B0160490
C0214855
D0184750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7458861.153124%
B7458480.643604%
C74574005.364087%
D74573184.264450%

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 7458 7458 75 75 1.01% 1.01%
B 7458 7458 11 11 0.15% 0.15%
C 7456 7456 337 337 4.52% 4.52%
D 7457 7457 306 306 4.10% 4.10%

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 7 160 196976 983.51 807 785 199.5
A 3 245 121430 604.8 807 785 199.5
A 3 128 19508 93.86 807 785 199.5
B 10 247 134393 779.48 798 769 171.4
B 0 245 64775 373.37 798 769 171.4
B 4 80 50067 287.57 798 769 171.4
C 15 224 1357481 6531.41 767 757 207.7
C 9 38 427621 2054.97 767 757 207.7
C 12 2 181779 871.46 767 757 207.7
D 15 142 880375 4056.49 765 730 216.8
D 6 159 90133 412.28 765 730 216.8
D 3 224 72727 332.01 765 730 216.8

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