ASTROSAT CZTI

Data Quality Report

Orbit 50539

Creation date: 2025-02-02T10:05:35.452775
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/AS1T05_239T01_9000006444_50539cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50539cztM0_level2_quad_clean.evt
Size (bytes)575,976,96096,413,760
Size549.3 MB 91.9 MB
Events in quadrant A4,706,003630,380
Events in quadrant B4,889,687682,526
Events in quadrant C6,180,029564,163
Events in quadrant D5,013,703563,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185893
B0192503
C0231653
D0197533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68562914.244457%
B68564186.096849%
C685682712.062427%
D68564095.965578%

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 7676 6858 149 149 1.94% 2.17%
B 7676 6857 203 203 2.64% 2.96%
C 7676 6858 577 577 7.52% 8.41%
D 7676 6858 319 319 4.16% 4.65%

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 3 130 206467 1141.01 727 707 180.3
A 4 3 176976 977.48 727 707 180.3
A 8 247 167541 925.16 727 707 180.3
B 4 170 708758 4654.44 724 699 152.1
B 0 229 403434 2647.39 724 699 152.1
B 7 0 387794 2544.58 724 699 152.1
C 15 196 1068548 5568.2 687 684 191.8
C 15 230 508322 2647.0 687 684 191.8
C 15 147 319940 1664.71 687 684 191.8
D 8 246 492188 2548.65 694 671 192.9
D 2 249 433286 2243.23 694 671 192.9
D 3 12 307407 1590.51 694 671 192.9

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