ASTROSAT CZTI

Data Quality Report

Orbit 54955

Creation date: 2025-11-24T21:02:27.975446
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_014T01_9000006528_54955cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54955cztM0_level2_quad_clean.evt
Size (bytes)757,560,96083,672,640
Size722.5 MB 79.8 MB
Events in quadrant A4,254,607628,268
Events in quadrant B3,138,787702,052
Events in quadrant C3,328,116625,659
Events in quadrant D16,774,75588,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175841
B0146621
C0150741
D0546741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70154606.557377%
B70161832.608324%
C70161512.152223%
D7016612987.357469%

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 7400 7016 314 314 4.24% 4.48%
B 7401 7017 11 11 0.15% 0.16%
C 7401 7017 12 12 0.16% 0.17%
D 7401 7017 5940 5940 80.26% 84.65%

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 32 936636 4958.93 763 741 188.7
A 0 8 103044 542.06 763 741 188.7
A 4 3 84351 443.01 763 741 188.7
B 5 185 36728 217.69 762 733 165.3
B 12 111 20315 118.42 762 733 165.3
B 7 252 19867 115.72 762 733 165.3
C 14 254 120694 579.67 757 749 206.9
C 1 16 77598 371.39 757 749 206.9
C 6 223 45973 218.56 757 749 206.9
D 15 94 13995219 155762.84 309 293 89.8
D 8 240 752787 8375.22 309 293 89.8
D 14 52 300208 3338.04 309 293 89.8

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