ASTROSAT CZTI

Data Quality Report

Orbit 57530

Creation date: 2026-05-17T03:19:02.802156
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_113T09_9000006574_57530cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57530cztM0_level2_quad_clean.evt
Size (bytes)484,534,080100,981,440
Size462.1 MB 96.3 MB
Events in quadrant A3,376,521640,557
Events in quadrant B4,033,655680,748
Events in quadrant C5,682,309614,958
Events in quadrant D4,238,135579,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160391
B0174061
C0224171
D0182441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7790200.256739%
B7790921.181001%
C77902903.722721%
D77901371.758665%

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 8200 8066 1 1 0.01% 0.01%
B 8200 8066 23 23 0.28% 0.29%
C 8200 8066 247 247 3.01% 3.06%
D 8200 8066 120 120 1.46% 1.49%

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 3 245 34380 163.01 837 817 205.9
A 10 251 33538 158.92 837 817 205.9
A 13 248 25441 119.6 837 817 205.9
B 4 206 253746 1426.07 823 791 177.4
B 5 185 162089 909.34 823 791 177.4
B 7 252 68561 382.06 823 791 177.4
C 15 224 2052051 9491.98 791 783 216.1
C 12 252 343356 1585.21 791 783 216.1
C 14 254 66607 304.59 791 783 216.1
D 8 240 503009 2228.83 798 761 225.3
D 3 12 153169 676.34 798 761 225.3
D 8 160 115122 507.5 798 761 225.3

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