ASTROSAT CZTI

Data Quality Report

Orbit 36160

Creation date: 2022-06-06T07:31:50.647778
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_059T08_9000005160_36160cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36160cztM0_level2_quad_clean.evt
Size (bytes)432,858,24079,318,080
Size412.8 MB 75.6 MB
Events in quadrant A2,721,657504,243
Events in quadrant B3,049,339534,592
Events in quadrant C3,285,644510,486
Events in quadrant D3,692,039480,954

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112073
B0123552
C0128452
D0145112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531670.131678%
B5316390.733634%
C5316691.297968%
D53162995.624530%

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 7439 5317 4 4 0.05% 0.08%
B 7439 5317 25 25 0.34% 0.47%
C 7439 5317 42 42 0.56% 0.79%
D 7439 5317 246 246 3.31% 4.63%

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 175574 1346.97 647 635 129.9
A 9 143 29507 222.3 647 635 129.9
A 13 254 9304 66.75 647 635 129.9
B 5 172 211648 1707.58 651 635 123.6
B 0 213 203648 1642.84 651 635 123.6
B 0 190 30937 245.21 651 635 123.6
C 15 214 225147 1501.19 642 648 149.5
C 15 208 224135 1494.43 642 648 149.5
C 0 207 178847 1191.59 642 648 149.5
D 12 17 558058 3657.39 626 612 152.4
D 13 249 271607 1777.99 626 612 152.4
D 2 250 197795 1293.71 626 612 152.4

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