ASTROSAT CZTI

Data Quality Report

Orbit 45558

Creation date: 2024-06-27T23:13:35.615841
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/AS1A13_093T11_9000006108_45558cztM0_level2.fits modeM0/AS1A13_093T11_9000006108_45558cztM0_level2_quad_clean.evt
Size (bytes)470,211,840110,615,040
Size448.4 MB 105.5 MB
Events in quadrant A6,713,606707,231
Events in quadrant B3,332,130764,723
Events in quadrant C3,246,601730,248
Events in quadrant D3,585,475673,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246002
B0144832
C0144382
D0154342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67975648.297778%
B67971291.897896%
C6796811.191878%
D67961071.574456%

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 7812 6797 284 284 3.64% 4.18%
B 7812 6798 21 21 0.27% 0.31%
C 7811 6797 18 18 0.23% 0.26%
D 7811 6797 48 48 0.61% 0.71%

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 2666125 16928.46 755 736 157.5
A 10 248 845284 5363.91 755 736 157.5
A 13 248 284802 1804.16 755 736 157.5
B 0 189 139322 917.53 769 745 151.0
B 5 172 77535 508.43 769 745 151.0
B 0 183 31973 206.76 769 745 151.0
C 14 254 248402 1401.21 758 764 176.7
C 12 2 27212 149.65 758 764 176.7
C 2 14 10653 55.96 758 764 176.7
D 1 52 293266 1524.4 761 737 191.9
D 12 233 159121 825.36 761 737 191.9
D 2 249 56542 290.81 761 737 191.9

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