ASTROSAT CZTI

Data Quality Report

Orbit 01120

Creation date: 2024-06-27T14:07:50.384317
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/AS1P01_997T01_9000000214_01120cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01120cztM0_level2_quad_clean.evt
Size (bytes)1,196,622,720102,591,360
Size1.1 GB 97.8 MB
Events in quadrant A8,211,097678,676
Events in quadrant B8,569,739673,043
Events in quadrant C9,961,554635,780
Events in quadrant D9,032,655630,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293722
B0304621
C0346561
D0319351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7025110.156584%
B702580.113879%
C70253825.437722%
D70254105.836299%

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 7380 7026 190 190 2.57% 2.70%
B 7380 7026 200 200 2.71% 2.85%
C 7380 7026 991 991 13.43% 14.10%
D 7380 7026 829 829 11.23% 11.80%

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 0 175 37516 69.82 2113 2125 506.9
A 12 243 27441 49.95 2113 2125 506.9
A 10 229 20434 36.12 2113 2125 506.9
B 15 22 49603 90.7 2209 2216 522.5
B 8 234 47752 87.16 2209 2216 522.5
B 0 190 25230 44.05 2209 2216 522.5
C 5 234 1679470 3001.16 2000 2072 558.9
C 15 241 352670 627.28 2000 2072 558.9
C 10 207 42725 72.74 2000 2072 558.9
D 2 16 187663 312.25 1996 2038 594.5
D 12 22 127972 211.84 1996 2038 594.5
D 14 34 98621 162.47 1996 2038 594.5

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