ASTROSAT CZTI

Data Quality Report

Orbit 59198

Creation date: 2026-09-07T11:30:27.422475
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/AS1T05_271T01_9000006604_59198cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59198cztM0_level2_quad_clean.evt
Size (bytes)420,842,880100,287,360
Size401.3 MB 95.6 MB
Events in quadrant A3,600,524656,746
Events in quadrant B3,798,486696,224
Events in quadrant C3,821,800633,175
Events in quadrant D3,841,478587,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158632
B0161642
C0160872
D0161972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6639961.446001%
B66392263.404127%
C6639781.174876%
D6639871.310438%

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 7509 6640 41 41 0.55% 0.62%
B 7509 6639 112 112 1.49% 1.69%
C 7509 6640 30 30 0.40% 0.45%
D 7509 6640 38 38 0.51% 0.57%

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 7 64 301960 1677.41 731 713 179.6
A 10 251 232543 1290.88 731 713 179.6
A 15 233 178503 989.98 731 713 179.6
B 10 247 438186 2834.4 721 694 154.4
B 4 236 177275 1144.02 721 694 154.4
B 4 201 133001 857.18 721 694 154.4
C 3 233 652784 3289.71 722 715 198.2
C 14 96 135106 678.01 722 715 198.2
C 12 252 81407 407.09 722 715 198.2
D 12 110 504046 2482.34 712 682 202.8
D 1 27 133146 653.25 712 682 202.8
D 11 129 121165 594.16 712 682 202.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct