ASTROSAT CZTI

Data Quality Report

Orbit 36481

Creation date: 2022-06-28T00:09:23.969644
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/AS1A11_049T03_9000005208_36481cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36481cztM0_level2_quad_clean.evt
Size (bytes)441,924,48064,635,840
Size421.5 MB 61.6 MB
Events in quadrant A2,554,538415,463
Events in quadrant B2,842,075406,342
Events in quadrant C4,707,336378,021
Events in quadrant D2,922,075388,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110353
B0119242
C0175362
D0123982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5265130.246914%
B5265290.550807%
C52654077.730294%
D52651122.127255%

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 7147 5266 3 3 0.04% 0.06%
B 7147 5266 22 22 0.31% 0.42%
C 7147 5266 367 367 5.14% 6.97%
D 7147 5266 104 104 1.46% 1.97%

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 198048 1616.41 599 589 122.2
A 9 143 14669 115.26 599 589 122.2
A 13 254 9980 76.88 599 589 122.2
B 5 172 228976 2012.64 590 575 113.5
B 5 255 128827 1130.14 590 575 113.5
B 0 213 44800 389.71 590 575 113.5
C 4 254 1421896 11107.65 552 556 128.0
C 0 10 483815 3776.62 552 556 128.0
C 0 207 419711 3275.66 552 556 128.0
D 13 249 434932 3116.29 570 554 139.4
D 2 250 142782 1020.37 570 554 139.4
D 2 153 46310 328.26 570 554 139.4

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