ASTROSAT CZTI

Data Quality Report

Orbit 45005

Creation date: 2024-06-27T23:08:56.092937
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_020T01_9000006040_45005cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45005cztM0_level2_quad_clean.evt
Size (bytes)1,868,670,720378,803,520
Size1.7 GB 361.3 MB
Events in quadrant A19,726,7662,512,894
Events in quadrant B13,288,2272,599,270
Events in quadrant C11,410,5012,545,445
Events in quadrant D22,884,8202,150,472

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0771024
B0562034
C0514564
D0848544

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241227222.993118%
B241226672.765111%
C241231840.762758%
D24123255010.570825%

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 26092 24126 247 247 0.95% 1.02%
B 26092 24126 290 290 1.11% 1.20%
C 26093 24127 72 72 0.28% 0.30%
D 26093 24127 2089 2089 8.01% 8.66%

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 8036245 14398.5 2683 2626 557.9
A 13 248 1051019 1879.01 2683 2626 557.9
A 10 248 84741 147.17 2683 2626 557.9
B 5 255 1000980 1894.15 2688 2607 527.1
B 0 189 796517 1506.23 2688 2607 527.1
B 5 172 217248 407.22 2688 2607 527.1
C 14 254 464821 733.03 2671 2685 630.4
C 15 208 167736 261.8 2671 2685 630.4
C 11 16 161020 251.15 2671 2685 630.4
D 1 52 5357483 8298.55 2552 2474 645.3
D 13 249 2845351 4405.55 2552 2474 645.3
D 11 241 1936546 2997.19 2552 2474 645.3

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