ASTROSAT CZTI

Data Quality Report

Orbit 52128

Creation date: 2025-05-18T15:24:20.110758
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/AS1C09_011T07_9000006470_52128cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52128cztM0_level2_quad_clean.evt
Size (bytes)2,786,532,480201,182,400
Size2.6 GB 191.9 MB
Events in quadrant A11,919,6601,677,365
Events in quadrant B14,473,1391,792,057
Events in quadrant C28,629,3481,125,975
Events in quadrant D46,666,358187,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03853
B03842
C03853
D03864

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0101

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048716135
B056494197
C098578372
D0152225596

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189758254.347826%
B1897210065.302551%
C18964696736.738030%
D189591712690.331769%

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 20052 18989 507 507 2.53% 2.67%
B 20053 18986 404 404 2.01% 2.13%
C 20053 18981 5412 5412 26.99% 28.51%
D 20053 18963 16069 16069 80.13% 84.74%

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 7 206 1274336 2597.38 1983 1929 489.9
A 4 249 758821 1545.05 1983 1929 489.9
A 4 3 555669 1130.35 1983 1929 489.9
B 5 172 3278096 7841.91 1967 1896 417.8
B 5 185 795291 1899.07 1967 1896 417.8
B 12 32 629537 1502.32 1967 1896 417.8
C 15 224 15725744 34467.51 1654 1639 456.2
C 15 193 2004828 4391.02 1654 1639 456.2
C 15 192 1422972 3115.59 1654 1639 456.2
D 6 42 23591157 92579.88 883 843 254.8
D 15 94 16039829 62944.79 883 843 254.8
D 8 176 1068794 4191.16 883 843 254.8

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