ASTROSAT CZTI

Data Quality Report

Orbit 35739

Creation date: 2022-05-09T17:11:41.231852
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/AS1A09_029T06_9000005126_35739cztM0_level2.evt modeM0/AS1A09_029T06_9000005126_35739cztM0_level2_quad_clean.evt
Size (bytes)881,432,640132,652,800
Size840.6 MB 126.5 MB
Events in quadrant A4,469,380900,882
Events in quadrant B4,658,610897,231
Events in quadrant C4,823,312853,776
Events in quadrant D12,143,577748,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186933
B0193312
C0196272
D0421622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8883260.292694%
B8883640.720477%
C8883981.103231%
D8883184920.815040%

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 12890 8885 12 12 0.09% 0.14%
B 12890 8885 41 41 0.32% 0.46%
C 12890 8885 95 95 0.74% 1.07%
D 12890 8885 2197 2197 17.04% 24.73%

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 204440 948.83 1078 1060 214.3
A 15 169 47833 218.21 1078 1060 214.3
A 13 6 22109 98.2 1078 1060 214.3
B 5 172 208102 1042.34 1057 1032 198.7
B 5 255 120262 600.17 1057 1032 198.7
B 0 189 84053 417.91 1057 1032 198.7
C 15 214 369127 1592.72 1006 1012 231.1
C 0 10 270673 1166.74 1006 1012 231.1
C 15 208 158023 679.34 1006 1012 231.1
D 1 52 5764342 24425.94 976 951 236.0
D 14 52 1940757 8221.13 976 951 236.0
D 12 17 176597 744.41 976 951 236.0

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