ASTROSAT CZTI

Data Quality Report

Orbit 41618

Creation date: 2024-06-27T22:30:46.245560
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_035T02_9000005680_41618cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41618cztM0_level2_quad_clean.evt
Size (bytes)563,734,08082,350,720
Size537.6 MB 78.5 MB
Events in quadrant A2,993,099655,291
Events in quadrant B2,807,037665,434
Events in quadrant C3,163,921599,355
Events in quadrant D11,497,787208,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120542
B0116652
C0124892
D0377262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215180.345158%
B5216831.591258%
C52162104.026074%
D5216367170.379601%

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 7189 5216 5 5 0.07% 0.10%
B 7190 5217 45 45 0.63% 0.86%
C 7190 5217 189 189 2.63% 3.62%
D 7190 5217 3484 3484 48.46% 66.78%

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 541757 4296.54 623 611 125.9
A 13 248 19421 149.35 623 611 125.9
A 2 79 14947 113.82 623 611 125.9
B 0 186 176404 1499.9 615 600 117.2
B 5 255 149278 1268.47 615 600 117.2
B 0 189 33132 277.55 615 600 117.2
C 0 10 481328 3582.27 580 582 134.2
C 15 214 226605 1684.2 580 582 134.2
C 14 254 126384 937.41 580 582 134.2
D 12 79 8475917 78533.87 444 432 107.9
D 13 249 946100 8762.56 444 432 107.9
D 2 249 178011 1645.45 444 432 107.9

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