ASTROSAT CZTI

Data Quality Report

Orbit 38789

Creation date: 2024-06-27T21:56:25.302330
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/AS1A12_051T01_9000005394_38789cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38789cztM0_level2_quad_clean.evt
Size (bytes)595,203,840128,747,520
Size567.6 MB 122.8 MB
Events in quadrant A3,994,192893,591
Events in quadrant B5,972,598870,707
Events in quadrant C6,902,299766,101
Events in quadrant D4,536,054806,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169102
B0231322
C0257732
D0189812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8082150.185598%
B80825346.607275%
C8082102912.731997%
D8082790.977481%

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 10707 8084 2 2 0.02% 0.02%
B 10707 8084 406 406 3.79% 5.02%
C 10707 8084 984 984 9.19% 12.17%
D 10707 8084 63 63 0.59% 0.78%

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 10 83 506966 2804.55 892 874 180.5
A 13 254 13978 72.62 892 874 180.5
A 12 16 11415 58.41 892 874 180.5
B 5 200 1478662 8682.89 871 843 170.2
B 4 171 708051 4155.19 871 843 170.2
B 5 184 290260 1700.46 871 843 170.2
C 14 254 3294632 17199.75 818 822 191.5
C 15 214 334025 1739.93 818 822 191.5
C 0 239 42871 219.57 818 822 191.5
D 5 222 470732 2253.16 860 840 208.5
D 2 249 277246 1325.39 860 840 208.5
D 2 16 208676 996.59 860 840 208.5

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