ASTROSAT CZTI

Data Quality Report

Orbit 51733

Creation date: 2025-04-21T23:33:26.088670
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/AS1A13_090T01_9000006464_51733cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51733cztM0_level2_quad_clean.evt
Size (bytes)928,111,680106,937,280
Size885.1 MB 102.0 MB
Events in quadrant A5,900,270773,552
Events in quadrant B6,856,850799,643
Events in quadrant C5,577,343738,634
Events in quadrant D15,372,938344,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234070
B0261232
C0224140
D0514360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83791842.195966%
B83797278.676453%
C83792793.329753%
D8379473456.498389%

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 8379 8379 126 126 1.50% 1.50%
B 8379 8379 535 535 6.39% 6.39%
C 8379 8379 242 242 2.89% 2.89%
D 8378 8378 4460 4460 53.23% 53.23%

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 12 3 1006913 4443.26 920 896 226.4
A 11 3 245413 1079.95 920 896 226.4
A 3 114 226957 998.44 920 896 226.4
B 4 206 1702410 8905.44 888 857 191.1
B 8 128 265730 1386.27 888 857 191.1
B 1 207 220145 1147.69 888 857 191.1
C 13 3 482302 1973.11 888 881 244.0
C 15 148 432753 1770.04 888 881 244.0
C 15 178 220325 899.4 888 881 244.0
D 11 129 10913258 63545.69 611 589 171.7
D 7 60 570079 3316.2 611 589 171.7
D 15 123 359146 2087.92 611 589 171.7

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