ASTROSAT CZTI

Data Quality Report

Orbit 57673

Creation date: 2026-05-26T17:32:37.773985
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_125T09_9000006578_57673cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57673cztM0_level2_quad_clean.evt
Size (bytes)481,996,800106,646,400
Size459.7 MB 101.7 MB
Events in quadrant A3,324,364700,097
Events in quadrant B4,359,865727,232
Events in quadrant C5,002,057664,826
Events in quadrant D4,581,831622,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153882
B0180782
C0200642
D0187762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73801752.371274%
B73814145.608996%
C73813544.796098%
D73813324.498035%

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 7455 7382 7 7 0.09% 0.09%
B 7456 7383 57 57 0.76% 0.77%
C 7456 7383 226 226 3.03% 3.06%
D 7456 7382 269 269 3.61% 3.64%

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 4 95 74579 367.37 813 789 200.9
A 7 160 43634 213.3 813 789 200.9
A 10 251 25340 122.23 813 789 200.9
B 4 80 627291 3710.48 786 757 168.9
B 10 16 212088 1251.55 786 757 168.9
B 0 213 190337 1122.74 786 757 168.9
C 15 224 1451909 6906.23 780 772 210.1
C 12 2 285954 1357.23 780 772 210.1
C 14 254 55832 262.04 780 772 210.1
D 8 240 585707 2637.76 784 750 221.8
D 2 120 503407 2266.64 784 750 221.8
D 2 31 88914 397.56 784 750 221.8

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