ASTROSAT CZTI

Data Quality Report

Orbit 18864

Creation date: 2024-06-27T17:55:49.611842
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_094T01_9000002816_18864cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18864cztM0_level2_quad_clean.evt
Size (bytes)605,747,52086,736,960
Size577.7 MB 82.7 MB
Events in quadrant A3,859,755531,628
Events in quadrant B4,222,465540,943
Events in quadrant C4,028,311514,625
Events in quadrant D5,707,770498,620

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163362
B0173292
C0167822
D0220764

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77681912.458805%
B77692413.102072%
C77692583.320891%
D77685597.196189%

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 8013 7769 0 0 0.00% 0.00%
B 8014 7770 13 13 0.16% 0.17%
C 8014 7770 12 12 0.15% 0.15%
D 8013 7769 331 331 4.13% 4.26%

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 6 16 34556 165.68 986 964 202.8
A 0 13 12926 59.0 986 964 202.8
A 13 254 10670 47.87 986 964 202.8
B 7 220 194499 1018.46 978 955 190.0
B 4 216 51848 267.81 978 955 190.0
B 12 111 22036 110.93 978 955 190.0
C 3 233 201405 899.96 937 940 222.7
C 14 238 142158 633.98 937 940 222.7
C 5 112 21609 92.79 937 940 222.7
D 7 238 822022 3566.72 941 914 230.2
D 14 34 434301 1882.54 941 914 230.2
D 12 1 343133 1486.52 941 914 230.2

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