ASTROSAT CZTI

Data Quality Report

Orbit 46608

Creation date: 2024-06-27T23:25:24.401563
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_092T09_9000006238_46608cztM0_level2.fits modeM0/AS1A13_092T09_9000006238_46608cztM0_level2_quad_clean.evt
Size (bytes)642,303,360137,551,680
Size612.5 MB 131.2 MB
Events in quadrant A8,053,670870,129
Events in quadrant B5,609,281902,766
Events in quadrant C4,170,798974,624
Events in quadrant D5,331,603869,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289852
B0222542
C0184402
D0214812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A787484010.668021%
B787499112.585725%
C78742973.771908%
D78745376.819914%

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 8724 7876 324 324 3.71% 4.11%
B 8724 7876 511 511 5.86% 6.49%
C 8724 7876 160 160 1.83% 2.03%
D 8724 7876 381 381 4.37% 4.84%

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 3704899 15788.56 1056 1037 234.6
A 0 247 107961 455.79 1056 1037 234.6
A 9 191 66321 278.29 1056 1037 234.6
B 15 201 895240 4248.93 1006 980 210.5
B 4 171 376103 1782.34 1006 980 210.5
B 0 189 188365 890.33 1006 980 210.5
C 3 233 109224 421.77 1015 1021 256.5
C 9 54 30269 114.01 1015 1021 256.5
C 14 254 23366 87.1 1015 1021 256.5
D 1 52 497985 1702.07 1062 1031 292.0
D 12 233 304323 1038.78 1062 1031 292.0
D 13 249 136547 464.14 1062 1031 292.0

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