ASTROSAT CZTI

Data Quality Report

Orbit 59180

Creation date: 2026-09-07T10:45:12.234752
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_59180cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59180cztM0_level2_quad_clean.evt
Size (bytes)561,810,240102,985,920
Size535.8 MB 98.2 MB
Events in quadrant A3,538,998719,899
Events in quadrant B4,231,148750,963
Events in quadrant C3,323,870691,463
Events in quadrant D9,173,097481,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01527973
B01714850
C01470335
D032151147

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6812991.453318%
B68163204.694836%
C6819741.085203%
D6805192628.302719%

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 9176 6831 21 21 0.23% 0.31%
B 9175 6832 125 125 1.36% 1.83%
C 9176 6832 11 11 0.12% 0.16%
D 9176 6833 1546 1546 16.85% 22.63%

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 0 24 209026 1072.88 795 774 194.1
A 3 245 197539 1013.7 795 774 194.1
A 3 14 40651 205.44 795 774 194.1
B 5 185 402117 2394.65 778 748 167.6
B 4 171 340074 2024.49 778 748 167.6
B 4 236 231565 1377.1 778 748 167.6
C 12 252 138474 641.48 786 782 214.6
C 14 254 43751 200.18 786 782 214.6
C 3 233 17976 80.1 786 782 214.6
D 2 31 3308934 17708.17 653 625 186.8
D 12 110 2054971 10996.16 653 625 186.8
D 11 129 384848 2056.6 653 625 186.8

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