ASTROSAT CZTI

Data Quality Report

Orbit 56379

Creation date: 2026-02-28T16:32:59.554554
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_083T05_9000006554_56379cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56379cztM0_level2_quad_clean.evt
Size (bytes)718,410,24085,406,400
Size685.1 MB 81.4 MB
Events in quadrant A8,879,491462,962
Events in quadrant B4,645,954633,389
Events in quadrant C8,153,387457,691
Events in quadrant D4,390,277560,760

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309871
B0184621
C0289871
D0176251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6759203830.152389%
B67606729.940828%
C6760196929.127219%
D67602423.579882%

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 7234 6761 1796 1796 24.83% 26.56%
B 7235 6762 440 440 6.08% 6.51%
C 7235 6762 1721 1721 23.79% 25.45%
D 7235 6762 129 129 1.78% 1.91%

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 4 95 3721436 22915.83 651 633 162.4
A 12 3 1544336 9507.42 651 633 162.4
A 3 14 476545 2931.07 651 633 162.4
B 0 213 898955 6025.01 705 677 149.1
B 1 223 387714 2595.97 705 677 149.1
B 5 185 223423 1494.02 705 677 149.1
C 15 230 4188141 25336.56 605 600 165.3
C 5 250 708197 4281.29 605 600 165.3
C 6 223 273900 1653.59 605 600 165.3
D 8 129 717949 3589.35 712 681 199.8
D 2 31 235783 1176.5 712 681 199.8
D 2 249 150908 751.77 712 681 199.8

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