ASTROSAT CZTI

Data Quality Report

Orbit 54350

Creation date: 2025-10-15T04:18:49.945405
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_126T15_9000006516_54350cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54350cztM0_level2_quad_clean.evt
Size (bytes)965,099,520120,386,880
Size920.4 MB 114.8 MB
Events in quadrant A4,876,523870,193
Events in quadrant B4,648,467946,723
Events in quadrant C7,948,278746,557
Events in quadrant D17,511,308418,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218760
B0209460
C0305460
D0585790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95562812.940561%
B9557991.035890%
C9557116812.221408%
D9557476249.827352%

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 9556 9556 269 269 2.81% 2.81%
B 9557 9557 71 71 0.74% 0.74%
C 9557 9557 1058 1058 11.07% 11.07%
D 9556 9556 4839 4839 50.64% 50.64%

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 7 29 784918 3190.56 979 953 245.7
A 0 8 123193 497.49 979 953 245.7
A 8 246 52585 210.13 979 953 245.7
B 0 171 189724 901.02 976 941 209.5
B 0 213 140055 663.96 976 941 209.5
B 10 247 87111 411.27 976 941 209.5
C 1 241 953235 3868.72 902 896 246.2
C 14 254 941505 3821.07 902 896 246.2
C 13 3 794349 3223.27 902 896 246.2
D 8 176 7292263 37569.98 684 653 194.1
D 15 108 6436549 33160.92 684 653 194.1
D 12 3 342456 1761.14 684 653 194.1

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