ASTROSAT CZTI

Data Quality Report

Orbit 54186

Creation date: 2025-10-04T03:11:28.885239
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_012T01_9000006512_54186cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54186cztM0_level2_quad_clean.evt
Size (bytes)657,411,840104,725,440
Size627.0 MB 99.9 MB
Events in quadrant A3,829,606733,801
Events in quadrant B4,461,170791,496
Events in quadrant C7,767,897563,086
Events in quadrant D7,672,848541,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170791
B0186811
C0286654
D0283671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77731341.723916%
B77741421.826601%
C7773170621.947768%
D7773144718.615721%

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 7773 7773 50 50 0.64% 0.64%
B 7774 7774 50 50 0.64% 0.64%
C 7773 7773 1411 1411 18.15% 18.15%
D 7773 7773 1297 1297 16.69% 16.69%

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 300338 1462.26 825 802 204.8
A 3 14 87371 422.61 825 802 204.8
A 4 3 47560 228.26 825 802 204.8
B 15 20 375480 2152.44 820 791 174.1
B 5 236 203534 1164.68 820 791 174.1
B 5 185 151304 864.64 820 791 174.1
C 15 215 1578808 7899.26 721 712 199.8
C 1 241 1354890 6778.42 721 712 199.8
C 15 177 923183 4617.49 721 712 199.8
D 8 176 3794255 18691.37 721 687 203.0
D 3 12 764839 3765.07 721 687 203.0
D 3 144 71999 351.36 721 687 203.0

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