ASTROSAT CZTI

Data Quality Report

Orbit 59027

Creation date: 2026-08-27T21:17:43.225219
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_004T02_9000006600_59027cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59027cztM0_level2_quad_clean.evt
Size (bytes)1,035,930,24078,324,480
Size987.9 MB 74.7 MB
Events in quadrant A5,323,850675,389
Events in quadrant B4,309,620712,042
Events in quadrant C16,564,61094,709
Events in quadrant D11,591,884387,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205160
B0178810
C0539820
D0393981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71964576.350750%
B71964095.683713%
C7196637388.563091%
D7196306242.551417%

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 7196 7196 308 308 4.28% 4.28%
B 7196 7196 158 158 2.20% 2.20%
C 7196 7196 6230 6230 86.58% 86.58%
D 7196 7196 2772 2772 38.52% 38.52%

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 10 251 865106 4317.72 804 781 200.2
A 0 24 788626 3935.66 804 781 200.2
A 8 206 253293 1261.42 804 781 200.2
B 4 236 500882 2935.47 789 760 170.4
B 5 185 162836 951.31 789 760 170.4
B 6 255 113376 661.0 789 760 170.4
C 15 219 14429181 110948.49 470 465 130.0
C 12 252 179075 1373.4 470 465 130.0
C 1 16 46602 354.76 470 465 130.0
D 12 1 7156137 41989.62 597 570 170.4
D 12 110 1314093 7707.89 597 570 170.4
D 2 62 315712 1849.29 597 570 170.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct