ASTROSAT CZTI

Data Quality Report

Orbit 58559

Creation date: 2026-07-25T08:29:39.586004
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_044T04_9000006592_58559cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58559cztM0_level2_quad_clean.evt
Size (bytes)444,697,920107,919,360
Size424.1 MB 102.9 MB
Events in quadrant A3,546,167705,700
Events in quadrant B3,914,955759,806
Events in quadrant C3,501,890677,343
Events in quadrant D4,926,740612,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158302
B0168842
C0158022
D0199222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7348380.517148%
B7349801.088583%
C7349530.721187%
D73493534.803375%

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 9188 7350 12 12 0.13% 0.16%
B 9189 7351 19 19 0.21% 0.26%
C 9189 7351 36 36 0.39% 0.49%
D 9189 7351 269 269 2.93% 3.66%

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 17 129598 634.45 818 796 203.0
A 10 251 105730 516.88 818 796 203.0
A 4 3 39479 190.54 818 796 203.0
B 0 171 299359 1704.41 814 784 175.2
B 0 186 107122 607.03 814 784 175.2
B 8 234 78693 444.74 814 784 175.2
C 6 223 70113 315.9 794 787 219.5
C 14 245 68664 309.3 794 787 219.5
C 4 5 62462 281.04 794 787 219.5
D 3 12 739564 3365.6 769 734 219.5
D 2 249 484429 2203.38 769 734 219.5
D 8 240 170396 772.86 769 734 219.5

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