ASTROSAT CZTI

Data Quality Report

Orbit 54025

Creation date: 2025-09-23T10:13:51.846875
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_041T01_9000006510_54025cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54025cztM0_level2_quad_clean.evt
Size (bytes)732,568,32086,031,360
Size698.6 MB 82.0 MB
Events in quadrant A3,273,590649,300
Events in quadrant B5,813,868610,389
Events in quadrant C3,798,697619,010
Events in quadrant D13,700,927250,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150352
B0220562
C0163882
D0454152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6830841.229868%
B6830106315.563690%
C68301522.225476%
D6829410860.155220%

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 7590 6831 51 51 0.67% 0.75%
B 7590 6829 778 778 10.25% 11.39%
C 7590 6831 92 92 1.21% 1.35%
D 7589 6828 3651 3651 48.11% 53.47%

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 15 174 356042 2027.31 709 691 175.3
A 0 8 42315 237.47 709 691 175.3
A 10 253 34505 192.91 709 691 175.3
B 5 236 2440483 17529.64 656 633 139.2
B 2 249 229109 1641.54 656 633 139.2
B 0 213 120803 863.39 656 633 139.2
C 13 3 501586 2637.19 693 685 189.9
C 9 53 184045 965.37 693 685 189.9
C 14 254 85878 448.53 693 685 189.9
D 8 176 11271943 87651.3 442 422 128.6
D 2 165 136509 1058.26 442 422 128.6
D 3 144 92006 712.19 442 422 128.6

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