ASTROSAT CZTI

Data Quality Report

Orbit 54775

Creation date: 2025-11-14T19:11:22.416545
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/AS1A14_103T01_9000006524_54775cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54775cztM0_level2_quad_clean.evt
Size (bytes)1,794,873,600286,767,360
Size1.7 GB 273.5 MB
Events in quadrant A9,207,1292,338,517
Events in quadrant B31,140,9971,152,929
Events in quadrant C11,617,8321,948,792
Events in quadrant D13,033,7551,958,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03882
B03870
C03860
D03862

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433881279
B01064121203
C0493561113
D0536041256

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186314312.313349%
B18639919349.321316%
C186325562.984113%
D1863411115.962220%

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 21665 18681 123 123 0.57% 0.66%
B 21702 18666 7964 7964 36.70% 42.67%
C 21667 18687 307 307 1.42% 1.64%
D 21655 18677 822 822 3.80% 4.40%

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 13 248 317859 513.39 2233 2182 614.9
A 0 8 108359 172.68 2233 2182 614.9
A 13 254 39572 60.81 2233 2182 614.9
B 2 249 23852021 70723.91 1515 1471 337.2
B 5 185 827487 2449.38 1515 1471 337.2
B 1 207 253023 745.93 1515 1471 337.2
C 9 38 1541928 2653.45 2025 2008 580.3
C 12 252 812786 1397.06 2025 2008 580.3
C 13 3 417122 715.29 2025 2008 580.3
D 11 129 1186724 1833.75 2122 2027 646.1
D 14 52 833348 1286.77 2122 2027 646.1
D 3 12 779061 1202.74 2122 2027 646.1

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