ASTROSAT CZTI

Data Quality Report

Orbit 38808

Creation date: 2024-06-27T21:56:42.359716
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_025T17_9000005400_38808cztM0_level2.fits modeM0/AS1A12_025T17_9000005400_38808cztM0_level2_quad_clean.evt
Size (bytes)87,373,44019,840,320
Size83.3 MB 18.9 MB
Events in quadrant A1,140,036122,338
Events in quadrant B532,220144,384
Events in quadrant C567,194134,150
Events in quadrant D909,154119,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040500
B022370
C022910
D034710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106415314.379699%
B106420.187970%
C106450.469925%
D1064403.759398%

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 1064 1064 132 132 12.41% 12.41%
B 1064 1064 0 0 0.00% 0.00%
C 1064 1064 5 5 0.47% 0.47%
D 1064 1064 36 36 3.38% 3.38%

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 13 248 367480 14065.82 119 117 26.1
A 12 16 151554 5798.31 119 117 26.1
A 10 83 126171 4826.43 119 117 26.1
B 5 184 19712 763.51 126 123 25.7
B 0 230 7483 286.87 126 123 25.7
B 4 170 4282 162.1 126 123 25.7
C 15 214 51630 1718.7 122 122 30.0
C 2 16 23773 789.18 122 122 30.0
C 0 10 11166 368.51 122 122 30.0
D 12 235 192109 6224.16 120 117 30.8
D 2 16 134372 4352.39 120 117 30.8
D 13 249 71238 2305.66 120 117 30.8

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