ASTROSAT CZTI

Data Quality Report

Orbit 45821

Creation date: 2024-06-27T23:16:32.561824
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/AS1T05_185T01_9000006128_45821cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45821cztM0_level2_quad_clean.evt
Size (bytes)545,411,520109,748,160
Size520.1 MB 104.7 MB
Events in quadrant A6,080,782739,765
Events in quadrant B5,044,818746,105
Events in quadrant C3,231,802748,283
Events in quadrant D5,339,203645,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220632
B0192562
C0137972
D0200972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171
B0170
C0181
D0181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63611842.892627%
B63614667.325892%
C6361851.336268%
D63614286.728502%

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 7546 6362 80 80 1.06% 1.26%
B 7546 6362 237 237 3.14% 3.73%
C 7546 6362 56 56 0.74% 0.88%
D 7546 6362 411 411 5.45% 6.46%

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 10 83 2948537 19609.11 734 720 150.3
A 13 248 260733 1729.63 734 720 150.3
A 15 14 25981 168.04 734 720 150.3
B 3 112 1137584 8097.05 726 705 140.4
B 4 171 586900 4174.98 726 705 140.4
B 0 171 230231 1634.72 726 705 140.4
C 0 207 271786 1572.21 741 744 172.4
C 3 233 43663 248.96 741 744 172.4
C 2 14 22343 125.29 741 744 172.4
D 11 241 1748476 9758.05 724 703 179.1
D 1 52 226516 1260.74 724 703 179.1
D 12 2 209502 1165.75 724 703 179.1

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