ASTROSAT CZTI

Data Quality Report

Orbit 57468

Creation date: 2026-05-13T10:20:17.557386
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_113T09_9000006574_57468cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57468cztM0_level2_quad_clean.evt
Size (bytes)592,943,04076,933,440
Size565.5 MB 73.4 MB
Events in quadrant A2,660,979571,476
Events in quadrant B7,349,018427,180
Events in quadrant C7,075,750424,555
Events in quadrant D4,404,740493,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120581
B0259001
C0252291
D0172401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5898410.695151%
B5899199933.887100%
C5899149725.377183%
D58993616.119681%

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 6833 5899 0 0 0.00% 0.00%
B 6834 5900 1409 1409 20.62% 23.88%
C 6834 5900 994 994 14.54% 16.85%
D 6834 5900 289 289 4.23% 4.90%

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 13 153 134456 847.55 642 625 157.9
A 4 3 20613 126.58 642 625 157.9
A 3 14 10169 60.44 642 625 157.9
B 4 206 5059841 44958.48 520 500 112.5
B 0 63 65259 575.46 520 500 112.5
B 10 247 30208 263.99 520 500 112.5
C 12 254 3097678 21077.16 536 532 146.9
C 15 224 1660176 11294.46 536 532 146.9
C 14 254 156716 1062.89 536 532 146.9
D 2 249 756309 4461.19 601 573 169.4
D 8 240 358992 2115.79 601 573 169.4
D 7 96 348576 2054.3 601 573 169.4

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