ASTROSAT CZTI

Data Quality Report

Orbit 37965

Creation date: 2024-06-27T21:46:45.274357
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_082T01_9000005356_37965cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37965cztM0_level2_quad_clean.evt
Size (bytes)428,382,72057,470,400
Size408.5 MB 54.8 MB
Events in quadrant A3,410,668341,221
Events in quadrant B3,366,527348,091
Events in quadrant C2,879,661343,914
Events in quadrant D2,932,384311,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137443
B0137332
C0118842
D0126852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5660761.342756%
B56601242.190813%
C5660330.583039%
D5660691.219081%

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 7362 5661 36 36 0.49% 0.64%
B 7362 5661 74 74 1.01% 1.31%
C 7362 5661 24 24 0.33% 0.42%
D 7362 5661 46 46 0.62% 0.81%

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 15 222 369272 2859.95 636 623 128.9
A 10 83 368974 2857.64 636 623 128.9
A 9 143 136508 1054.18 636 623 128.9
B 0 229 315443 2569.87 641 623 122.5
B 5 172 221494 1802.97 641 623 122.5
B 5 184 116594 946.67 641 623 122.5
C 15 214 238770 1627.12 631 634 146.4
C 0 10 152679 1038.88 631 634 146.4
C 14 254 23101 153.51 631 634 146.4
D 13 249 145638 944.42 625 609 153.6
D 10 199 91742 593.46 625 609 153.6
D 7 55 86844 561.56 625 609 153.6

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