ASTROSAT CZTI

Data Quality Report

Orbit 20190228_T03_083T01_9000002742_level2

Creation date: 2019-03-01T09:57:26.765949
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_083T01_9000002742cztM0_level2_bc.evt modeM0/AS1T03_083T01_9000002742cztM0_level2_quad_clean.evt
Size (bytes)1,113,264,000512,899,200
Size1.0 GB 489.1 MB
Events in quadrant A8,462,1183,457,494
Events in quadrant B9,471,4533,464,668
Events in quadrant C6,306,1343,351,861
Events in quadrant D7,496,1463,269,592

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680300
B0709620
C0616750
D0637710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289917842.704288%
B2899112184.201304%
C289914441.531510%
D289913491.203822%

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 33701 28987 105 105 0.31% 0.36%
B 33701 28987 218 218 0.65% 0.75%
C 33701 28987 0 0 0.00% 0.00%
D 33701 28986 40 40 0.12% 0.14%

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 0 13 1980798 5711.01 1556 1530 346.6
A 4 2 293730 843.12 1556 1530 346.6
A 15 174 123706 352.53 1556 1530 346.6
B 10 245 3128035 10437.08 1560 1524 299.6
B 7 220 93204 306.05 1560 1524 299.6
B 0 197 45456 146.65 1560 1524 299.6
C 3 233 457458 1272.22 1500 1499 358.4
C 7 247 58931 160.25 1500 1499 358.4
C 8 128 12330 30.22 1500 1499 358.4
D 7 238 532111 1470.27 1523 1473 360.9
D 1 52 515203 1423.42 1523 1473 360.9
D 12 110 319632 881.54 1523 1473 360.9

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