ASTROSAT CZTI

Data Quality Report

Orbit 04776

Creation date: 2024-06-27T14:46:49.822552
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/AS1G05_218T05_9000000602_04776cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04776cztM0_level2_quad_clean.evt
Size (bytes)618,269,76080,303,040
Size589.6 MB 76.6 MB
Events in quadrant A3,185,432512,853
Events in quadrant B3,237,610511,023
Events in quadrant C4,418,913501,370
Events in quadrant D7,451,660461,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135973
B0137982
C0176312
D0265402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371600.941767%
B6371600.941767%
C63716279.841469%
D63714396.890598%

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 7656 6372 4 4 0.05% 0.06%
B 7656 6372 5 5 0.07% 0.08%
C 7656 6372 238 238 3.11% 3.74%
D 7656 6372 439 439 5.73% 6.89%

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 15 173568 1115.14 768 752 155.0
A 0 149 24318 152.07 768 752 155.0
A 13 251 13887 84.76 768 752 155.0
B 4 80 147680 999.35 774 756 147.0
B 14 167 62919 422.82 774 756 147.0
B 15 204 22768 149.72 774 756 147.0
C 14 48 1491273 8685.64 738 739 171.6
C 1 16 38589 220.56 738 739 171.6
C 13 61 6040 30.89 738 739 171.6
D 11 132 3956524 22419.78 734 713 176.4
D 13 235 235503 1330.69 734 713 176.4
D 1 31 126415 712.42 734 713 176.4

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