ASTROSAT CZTI

Data Quality Report

Orbit 56366

Creation date: 2026-02-27T19:50:54.898443
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_083T05_9000006554_56366cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56366cztM0_level2_quad_clean.evt
Size (bytes)1,223,657,28068,529,600
Size1.1 GB 65.4 MB
Events in quadrant A12,729,973345,816
Events in quadrant B6,133,069662,211
Events in quadrant C7,367,542549,963
Events in quadrant D18,499,1085,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426950
B0231990
C0270030
D0600578

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7334389353.081538%
B733597213.251534%
C7335139318.991138%
D7334727599.195528%

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 7334 7334 3850 3850 52.50% 52.50%
B 7335 7335 761 761 10.37% 10.37%
C 7335 7335 1312 1312 17.89% 17.89%
D 7333 7333 6715 6715 91.57% 91.57%

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 12 3 8266498 56904.88 582 567 145.3
A 12 194 959583 6602.12 582 567 145.3
A 4 95 409857 2817.66 582 567 145.3
B 4 206 2605026 16503.51 734 709 157.8
B 5 185 257611 1627.98 734 709 157.8
B 8 128 80003 502.48 734 709 157.8
C 15 230 2819296 14790.09 690 683 190.6
C 5 250 540634 2833.28 690 683 190.6
C 13 3 506386 2653.57 690 683 190.6
D 8 129 17570972 359487.9 164 156 48.9
D 6 239 80668 1647.23 164 156 48.9
D 2 249 74769 1526.54 164 156 48.9

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