ASTROSAT CZTI

Data Quality Report

Orbit 55300

Creation date: 2025-12-18T01:35:25.013256
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_009T01_9000006534_55300cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55300cztM0_level2_quad_clean.evt
Size (bytes)404,968,32094,515,840
Size386.2 MB 90.1 MB
Events in quadrant A4,329,127594,593
Events in quadrant B2,993,356673,293
Events in quadrant C3,001,471606,391
Events in quadrant D4,169,606542,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171482
B0136112
C0137862
D0169982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63854767.454973%
B6384681.065163%
C6384630.986842%
D63843936.156015%

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 7545 6385 403 403 5.34% 6.31%
B 7544 6384 17 17 0.23% 0.27%
C 7544 6385 36 36 0.48% 0.56%
D 7544 6385 325 325 4.31% 5.09%

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 0 8 1102218 6811.93 660 645 161.7
A 7 7 483663 2986.9 660 645 161.7
A 3 78 84310 517.37 660 645 161.7
B 0 199 172197 1187.59 676 653 144.4
B 7 252 45818 312.67 676 653 144.4
B 10 247 22458 150.95 676 653 144.4
C 13 3 133332 721.44 671 662 183.9
C 14 254 96593 521.65 671 662 183.9
C 9 38 58619 315.16 671 662 183.9
D 11 129 946751 5178.83 650 624 182.7
D 6 239 236627 1291.81 650 624 182.7
D 3 12 85724 465.81 650 624 182.7

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