ASTROSAT CZTI

Data Quality Report

Orbit 57703

Creation date: 2026-05-28T19:58:58.791464
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_57703cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57703cztM0_level2_quad_clean.evt
Size (bytes)648,460,80099,054,720
Size618.4 MB 94.5 MB
Events in quadrant A3,270,191692,330
Events in quadrant B5,254,780711,417
Events in quadrant C8,562,783546,820
Events in quadrant D6,357,815547,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146510
B0204011
C0303830
D0237980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A720060.083333%
B71993464.806223%
C7199158422.003056%
D720092912.902778%

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 7200 7200 2 2 0.03% 0.03%
B 7199 7199 282 282 3.92% 3.92%
C 7199 7199 1213 1213 16.85% 16.85%
D 7200 7200 702 702 9.75% 9.75%

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 3 128 210771 1096.79 777 755 191.5
A 4 3 18526 92.81 777 755 191.5
A 3 245 14383 71.17 777 755 191.5
B 4 80 1562697 9805.04 742 714 159.3
B 0 171 142430 889.59 742 714 159.3
B 0 155 137208 856.81 742 714 159.3
C 15 224 4685527 25120.69 685 680 186.5
C 12 254 532318 2850.7 685 680 186.5
C 14 96 237628 1270.54 685 680 186.5
D 2 249 1994558 9950.91 706 672 200.4
D 8 240 665811 3319.52 706 672 200.4
D 10 181 249030 1239.48 706 672 200.4

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