ASTROSAT CZTI

Data Quality Report

Orbit 20495

Creation date: 2024-06-27T18:16:02.276610
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/AS1A05_115T01_9000003030_20495cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20495cztM0_level2_quad_clean.evt
Size (bytes)564,200,64095,063,040
Size538.1 MB 90.7 MB
Events in quadrant A3,127,392641,243
Events in quadrant B3,459,963657,390
Events in quadrant C3,393,503616,380
Events in quadrant D6,685,120529,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131502
B0142142
C0140712
D0241212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6213350.563335%
B6214560.901191%
C6214831.335694%
D6214105817.026070%

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 7578 6214 0 0 0.00% 0.00%
B 7579 6215 3 3 0.04% 0.05%
C 7579 6214 0 0 0.00% 0.00%
D 7579 6214 1125 1125 14.84% 18.10%

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 12 96 8679 49.23 808 794 160.2
A 11 29 7933 44.58 808 794 160.2
A 0 226 7193 39.96 808 794 160.2
B 0 189 101123 661.86 817 799 151.6
B 0 197 47570 308.56 817 799 151.6
B 0 190 43116 279.18 817 799 151.6
C 3 233 217487 1185.36 782 787 182.8
C 14 238 123098 669.05 782 787 182.8
C 13 61 5345 24.93 782 787 182.8
D 7 38 1924799 10690.64 744 724 180.0
D 2 16 840897 4668.21 744 724 180.0
D 1 52 477191 2647.37 744 724 180.0

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