ASTROSAT CZTI

Data Quality Report

Orbit 08867

Creation date: 2024-06-27T15:38:16.457938
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/AS1G07_028T01_9000001232_08867cztM0_level2.evt modeM0/AS1G07_028T01_9000001232_08867cztM0_level2_quad_clean.evt
Size (bytes)1,238,523,840220,489,920
Size1.2 GB 210.3 MB
Events in quadrant A9,723,0201,390,340
Events in quadrant B9,289,2981,380,061
Events in quadrant C7,938,5201,377,365
Events in quadrant D9,390,7841,339,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404513
B0390693
C0356913
D0393913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172683071.777855%
B172683642.107945%
C172681290.747047%
D172683101.795228%

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 18429 17272 54 54 0.29% 0.31%
B 18429 17272 106 106 0.58% 0.61%
C 18429 17273 8 8 0.04% 0.05%
D 18429 17273 136 136 0.74% 0.79%

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 8 5 1512989 3596.53 2060 2017 420.1
A 15 174 109498 255.83 2060 2017 420.1
A 4 2 52941 121.21 2060 2017 420.1
B 4 48 590044 1485.07 2065 2013 396.0
B 10 16 387899 974.55 2065 2013 396.0
B 0 214 121937 302.87 2065 2013 396.0
C 10 22 32814 66.15 2005 2015 465.6
C 14 234 26320 52.2 2005 2015 465.6
C 1 3 20136 38.92 2005 2015 465.6
D 13 105 725020 1383.67 1987 1939 522.6
D 8 195 689222 1315.17 1987 1939 522.6
D 2 14 168236 318.22 1987 1939 522.6

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