ASTROSAT CZTI

Data Quality Report

Orbit 57998

Creation date: 2026-06-30T00:37:26.314215
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_031T01_9000006584_57998cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57998cztM0_level2_quad_clean.evt
Size (bytes)577,339,20095,906,880
Size550.6 MB 91.5 MB
Events in quadrant A3,359,552649,266
Events in quadrant B3,841,576698,535
Events in quadrant C4,287,618597,488
Events in quadrant D9,350,199479,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014786165
B016047147
C018024432
D032723236

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01420
C01422
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6861881.282612%
B68711602.328628%
C68503715.416058%
D6862153722.398718%

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 7708 6894 8 8 0.10% 0.12%
B 7715 6896 64 64 0.83% 0.93%
C 7709 6876 252 252 3.27% 3.66%
D 7712 6896 1685 1685 21.85% 24.43%

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 281082 1492.89 762 741 187.8
A 13 248 38202 199.49 762 741 187.8
A 3 245 32324 168.19 762 741 187.8
B 10 128 413145 2545.79 749 720 162.0
B 5 185 262744 1617.4 749 720 162.0
B 4 171 90624 554.95 749 720 162.0
C 15 201 987175 4998.76 723 717 197.3
C 13 3 158757 800.85 723 717 197.3
C 14 254 88451 444.58 723 717 197.3
D 12 110 4996183 25308.95 698 666 197.4
D 8 160 320567 1620.72 698 666 197.4
D 2 66 311166 1573.1 698 666 197.4

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