ASTROSAT CZTI

Data Quality Report

Orbit 47211

Creation date: 2024-06-27T23:32:54.247595
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/AS1A13_019T01_9000006302_47211cztM0_level2.fits modeM0/AS1A13_019T01_9000006302_47211cztM0_level2_quad_clean.evt
Size (bytes)776,995,20096,071,040
Size741.0 MB 91.6 MB
Events in quadrant A11,891,181477,367
Events in quadrant B3,679,551720,032
Events in quadrant C3,080,192705,147
Events in quadrant D9,598,272542,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399092
B0154712
C0139722
D0331332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6635267140.256217%
B66351952.938960%
C6635530.798794%
D6635133220.075358%

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 7680 6635 2579 2579 33.58% 38.87%
B 7680 6635 123 123 1.60% 1.85%
C 7680 6635 35 35 0.46% 0.53%
D 7680 6635 1536 1536 20.00% 23.15%

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 9 191 4968916 36731.04 651 638 135.3
A 10 83 3348066 24747.92 651 638 135.3
A 15 235 1055140 7796.05 651 638 135.3
B 15 201 444349 3025.98 739 718 146.6
B 0 200 90463 612.15 739 718 146.6
B 0 190 68598 463.01 739 718 146.6
C 14 254 176650 1014.9 733 735 173.3
C 15 208 24935 139.62 733 735 173.3
C 0 207 9820 52.41 733 735 173.3
D 6 112 6356943 36075.11 691 670 176.2
D 12 218 348342 1973.22 691 670 176.2
D 5 171 86729 488.43 691 670 176.2

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