ASTROSAT CZTI

Data Quality Report

Orbit 47913

Creation date: 2024-08-07T13:37:02.536893
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_074T02_9000006378_47913cztM0_level2.fits modeM0/AS1A13_074T02_9000006378_47913cztM0_level2_quad_clean.evt
Size (bytes)486,342,720112,216,320
Size463.8 MB 107.0 MB
Events in quadrant A7,247,492705,963
Events in quadrant B3,227,697769,131
Events in quadrant C3,343,097746,444
Events in quadrant D3,626,494676,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264591
B0149081
C0153381
D0160673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71825097.087162%
B71821452.018936%
C71831472.046499%
D71822203.063214%

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 7667 7184 187 187 2.44% 2.60%
B 7667 7184 11 11 0.14% 0.15%
C 7668 7185 37 37 0.48% 0.51%
D 7667 7184 101 101 1.32% 1.41%

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 3675532 22901.1 768 748 160.5
A 13 248 599622 3732.16 768 748 160.5
A 3 137 9080 51.92 768 748 160.5
B 8 234 41132 260.65 780 755 154.9
B 0 200 31707 199.81 780 755 154.9
B 0 198 24421 152.77 780 755 154.9
C 12 2 259127 1404.24 786 788 184.0
C 14 254 17554 91.13 786 788 184.0
C 14 67 5314 24.6 786 788 184.0
D 10 204 222422 1141.28 783 756 194.2
D 11 224 115477 590.66 783 756 194.2
D 2 37 85285 435.21 783 756 194.2

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