ASTROSAT CZTI

Data Quality Report

Orbit 34707

Creation date: 2022-03-02T15:56:53.710511
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/AS1A09_038T36_9000004976_34707cztM0_level2.evt modeM0/AS1A09_038T36_9000004976_34707cztM0_level2_quad_clean.evt
Size (bytes)390,366,72078,681,600
Size372.3 MB 75.0 MB
Events in quadrant A2,670,875533,142
Events in quadrant B2,628,388534,586
Events in quadrant C2,111,828531,361
Events in quadrant D4,128,831490,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106482
B0105121
C086421
D0152361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4161370.889209%
B41611884.518145%
C4161160.384523%
D41611423.412641%

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 5833 4162 13 13 0.22% 0.31%
B 5833 4162 126 126 2.16% 3.03%
C 5833 4162 8 8 0.14% 0.19%
D 5833 4162 108 108 1.85% 2.59%

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 15 169 747129 7680.05 484 475 97.2
A 10 83 27128 274.15 484 475 97.2
A 9 143 14347 142.69 484 475 97.2
B 5 255 338634 3733.38 474 460 90.6
B 5 172 205321 2261.63 474 460 90.6
B 4 171 69735 764.78 474 460 90.6
C 15 214 175136 1593.61 474 477 109.6
C 0 10 46647 421.26 474 477 109.6
C 15 159 17755 157.65 474 477 109.6
D 8 195 1512650 12156.79 463 451 124.4
D 12 227 369420 2966.2 463 451 124.4
D 2 250 131185 1050.99 463 451 124.4

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