ASTROSAT CZTI

Data Quality Report

Orbit 09872

Creation date: 2024-06-27T15:51:41.117685
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/AS1A03_117T06_9000001404_09872cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09872cztM0_level2_quad_clean.evt
Size (bytes)415,399,68086,284,800
Size396.2 MB 82.3 MB
Events in quadrant A2,970,325550,269
Events in quadrant B3,072,100568,354
Events in quadrant C3,019,940542,520
Events in quadrant D3,095,373517,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128663
B0131305
C0132136
D0134152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621680.128700%
B6215470.756235%
C6215550.884956%
D6216260.418275%

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 7566 6217 0 0 0.00% 0.00%
B 7566 6217 18 18 0.24% 0.29%
C 7566 6217 25 25 0.33% 0.40%
D 7566 6217 17 17 0.22% 0.27%

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 15 174 33755 214.02 761 748 154.2
A 0 167 8927 53.03 761 748 154.2
A 0 226 7567 44.22 761 748 154.2
B 4 81 92051 626.08 766 749 145.8
B 12 111 17160 112.53 766 749 145.8
B 11 111 14084 91.44 766 749 145.8
C 14 234 132756 785.05 731 737 168.2
C 9 236 23321 134.3 731 737 168.2
C 1 3 7178 38.3 731 737 168.2
D 1 52 147790 785.01 722 706 187.4
D 10 172 85238 451.16 722 706 187.4
D 2 14 41008 215.1 722 706 187.4

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