ASTROSAT CZTI

Data Quality Report

Orbit 59341

Creation date: 2026-09-15T22:07:45.107739
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_033T01_9000006608_59341cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59341cztM0_level2_quad_clean.evt
Size (bytes)411,039,360102,761,280
Size392.0 MB 98.0 MB
Events in quadrant A3,182,638677,264
Events in quadrant B3,661,144722,963
Events in quadrant C3,897,881648,207
Events in quadrant D3,960,550603,803

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139922
B0153342
C0157252
D0160973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65912213.353057%
B65913244.915794%
C65912633.990290%
D65902583.915023%

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 8861 6593 11 11 0.12% 0.17%
B 8861 6592 58 58 0.65% 0.88%
C 8861 6593 56 56 0.63% 0.85%
D 8860 6592 83 83 0.94% 1.26%

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 15 233 66935 346.47 789 768 191.0
A 10 251 28720 146.37 789 768 191.0
A 6 226 17697 88.65 789 768 191.0
B 4 236 233114 1406.42 772 744 165.2
B 5 185 114325 687.45 772 744 165.2
B 4 171 94233 565.84 772 744 165.2
C 1 16 318608 1517.56 771 765 209.4
C 12 252 251550 1197.39 771 765 209.4
C 3 233 227386 1082.01 771 765 209.4
D 11 129 567137 2622.38 771 738 216.0
D 12 110 103143 474.13 771 738 216.0
D 2 249 76730 351.84 771 738 216.0

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