ASTROSAT CZTI

Data Quality Report

Orbit 58545

Creation date: 2026-07-24T14:42:43.850405
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_58545cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58545cztM0_level2_quad_clean.evt
Size (bytes)567,927,360119,784,960
Size541.6 MB 114.2 MB
Events in quadrant A5,028,079784,791
Events in quadrant B4,603,848845,195
Events in quadrant C4,790,977755,197
Events in quadrant D5,960,475668,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204692
B0192812
C0199652
D0236422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82382623.180384%
B82392523.058624%
C82392082.524578%
D82396187.500910%

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 9508 8240 91 91 0.96% 1.10%
B 9509 8241 30 30 0.32% 0.36%
C 9509 8241 90 90 0.95% 1.09%
D 9509 8241 464 464 4.88% 5.63%

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 10 17 567648 2420.08 939 913 234.2
A 3 14 398742 1698.81 939 913 234.2
A 12 114 259452 1104.02 939 913 234.2
B 0 171 249407 1236.78 934 900 200.9
B 0 186 173002 856.52 934 900 200.9
B 8 234 120713 596.29 934 900 200.9
C 12 252 594487 2360.82 916 907 251.4
C 1 12 218349 864.82 916 907 251.4
C 14 254 83160 327.14 916 907 251.4
D 11 176 866390 3443.84 879 840 251.3
D 8 240 527622 2095.96 879 840 251.3
D 3 12 416211 1652.67 879 840 251.3

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