ASTROSAT CZTI

Data Quality Report

Orbit 57057

Creation date: 2026-04-15T06:12:59.471278
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_083T10_9000006566_57057cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57057cztM0_level2_quad_clean.evt
Size (bytes)402,658,56094,170,240
Size384.0 MB 89.8 MB
Events in quadrant A2,885,280631,535
Events in quadrant B3,777,316649,118
Events in quadrant C3,073,681597,449
Events in quadrant D4,668,695525,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132722
B0156472
C0136372
D0183432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423230.358088%
B64233395.277908%
C6423290.451502%
D64234446.912658%

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 7524 6424 6 6 0.08% 0.09%
B 7524 6424 229 229 3.04% 3.56%
C 7524 6424 14 14 0.19% 0.22%
D 7524 6424 401 401 5.33% 6.24%

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 3 14 86021 498.44 698 680 171.2
A 8 249 24561 139.48 698 680 171.2
A 4 3 19398 109.32 698 680 171.2
B 10 16 731300 5073.17 673 650 144.0
B 0 63 231458 1602.59 673 650 144.0
B 0 213 73267 504.21 673 650 144.0
C 1 16 82011 444.23 679 672 183.1
C 12 254 78684 426.06 679 672 183.1
C 15 209 64600 349.14 679 672 183.1
D 12 33 892037 4870.77 649 619 183.0
D 12 251 478882 2613.26 649 619 183.0
D 2 249 192391 1047.86 649 619 183.0

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