ASTROSAT CZTI

Data Quality Report

Orbit 34336

Creation date: 2022-02-03T02:54:44.062431
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/AS1C07_001T05_9000004902_34336cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34336cztM0_level2_quad_clean.evt
Size (bytes)478,632,960103,760,640
Size456.5 MB 99.0 MB
Events in quadrant A2,368,119713,319
Events in quadrant B3,000,655717,348
Events in quadrant C3,501,019716,971
Events in quadrant D5,296,402653,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101053
B0120072
C0134582
D0191912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486260.123406%
B48621803.702180%
C48621964.031263%
D486257111.744138%

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 6983 4863 0 0 0.00% 0.00%
B 6983 4863 115 115 1.65% 2.36%
C 6983 4863 176 176 2.52% 3.62%
D 6983 4863 507 507 7.26% 10.43%

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 30853 256.09 594 584 118.2
A 13 6 21243 174.78 594 584 118.2
A 9 143 21195 174.38 594 584 118.2
B 5 172 523515 4789.81 589 577 109.2
B 0 229 37500 338.19 589 577 109.2
B 4 171 35365 318.64 589 577 109.2
C 14 254 851346 6377.97 587 593 133.4
C 15 214 205280 1534.51 587 593 133.4
C 0 10 121136 903.69 587 593 133.4
D 12 235 1870959 12226.01 564 554 153.0
D 8 195 571735 3733.56 564 554 153.0
D 1 52 180738 1177.78 564 554 153.0

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