ASTROSAT CZTI

Data Quality Report

Orbit 27094

Creation date: 2024-06-27T19:36:25.952302
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/AS1T03_231T01_9000003910_27094cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27094cztM0_level2_quad_clean.evt
Size (bytes)561,326,40092,635,200
Size535.3 MB 88.3 MB
Events in quadrant A3,671,049622,074
Events in quadrant B4,772,906619,185
Events in quadrant C3,014,758592,065
Events in quadrant D5,133,312551,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148700
B0184090
C0127660
D0193760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60311993.299619%
B60311692.802189%
C6032911.508621%
D60324918.139920%

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 7176 6032 79 79 1.10% 1.31%
B 7176 6032 59 59 0.82% 0.98%
C 7177 6033 0 0 0.00% 0.00%
D 7177 6033 463 463 6.45% 7.67%

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 14 235 636892 4120.1 770 758 154.4
A 6 16 46306 295.0 770 758 154.4
A 12 189 15693 96.73 770 758 154.4
B 0 189 1281506 8856.67 760 742 144.6
B 10 245 308433 2127.73 760 742 144.6
B 3 112 85360 585.15 760 742 144.6
C 14 238 121137 700.24 734 739 171.9
C 2 16 21487 120.67 734 739 171.9
C 15 208 9515 51.04 734 739 171.9
D 1 52 1930947 11080.02 728 709 174.2
D 2 250 140585 802.92 728 709 174.2
D 7 38 136001 776.61 728 709 174.2

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