ASTROSAT CZTI

Data Quality Report

Orbit 36303

Creation date: 2022-06-15T23:02:02.952397
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_089T02_9000005188_36303cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36303cztM0_level2_quad_clean.evt
Size (bytes)583,246,08079,326,720
Size556.2 MB 75.7 MB
Events in quadrant A2,818,150571,462
Events in quadrant B7,063,219406,266
Events in quadrant C3,112,266542,692
Events in quadrant D4,306,621505,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116813
B0246202
C0125882
D0163552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370130.242086%
B5370182033.891993%
C5370510.949721%
D53703967.374302%

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 7343 5371 2 2 0.03% 0.04%
B 7343 5370 1673 1673 22.78% 31.15%
C 7343 5371 41 41 0.56% 0.76%
D 7343 5371 388 388 5.28% 7.22%

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 194484 1434.2 670 658 135.1
A 9 143 11277 78.57 670 658 135.1
A 13 6 10971 76.31 670 658 135.1
B 5 172 3736534 37021.95 533 522 100.9
B 4 171 708204 7012.76 533 522 100.9
B 5 236 205597 2032.19 533 522 100.9
C 15 214 226735 1558.62 629 636 145.1
C 0 207 209229 1437.95 629 636 145.1
C 0 10 201266 1383.05 629 636 145.1
D 7 223 851025 5622.84 622 607 151.2
D 12 6 464302 3065.88 622 607 151.2
D 13 249 189710 1250.32 622 607 151.2

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