ASTROSAT CZTI

Data Quality Report

Orbit 27041

Creation date: 2024-06-27T19:35:49.841290
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/AS1A09_120T02_9000003904_27041cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27041cztM0_level2_quad_clean.evt
Size (bytes)627,779,520107,222,400
Size598.7 MB 102.3 MB
Events in quadrant A7,952,263619,342
Events in quadrant B3,420,308761,086
Events in quadrant C3,574,594721,537
Events in quadrant D3,625,155691,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280060
B0140620
C0145840
D0150410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498199030.624808%
B6498731.123423%
C64981782.739304%
D6497901.385255%

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 7568 6499 1614 1614 21.33% 24.83%
B 7568 6498 5 5 0.07% 0.08%
C 7568 6499 36 36 0.48% 0.55%
D 7567 6497 78 78 1.03% 1.20%

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 5049568 33799.94 744 734 149.4
A 8 192 26509 172.55 744 734 149.4
A 0 13 9719 60.15 744 734 149.4
B 15 33 32293 190.54 860 844 165.1
B 12 111 19291 111.76 860 844 165.1
B 11 111 17197 99.08 860 844 165.1
C 2 16 213403 1087.32 828 834 195.5
C 14 238 133535 678.78 828 834 195.5
C 13 61 5636 24.56 828 834 195.5
D 5 222 321088 1602.23 828 809 199.9
D 2 250 74188 367.09 828 809 199.9
D 1 52 68131 336.79 828 809 199.9

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