ASTROSAT CZTI

Data Quality Report

Orbit 52050

Creation date: 2025-05-14T12:49:05.728962
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_011T06_9000006468_52050cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52050cztM0_level2_quad_clean.evt
Size (bytes)1,042,778,88079,427,520
Size994.5 MB 75.7 MB
Events in quadrant A3,916,624672,668
Events in quadrant B5,559,400694,946
Events in quadrant C10,271,056484,338
Events in quadrant D18,284,55741,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169612
B0216272
C0356932
D0594182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73511011.373963%
B73515217.087471%
C7351216429.438172%
D7351689593.796762%

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 7756 7353 58 58 0.75% 0.79%
B 7756 7353 263 263 3.39% 3.58%
C 7756 7352 1783 1783 22.99% 24.25%
D 7755 7350 6558 6558 84.56% 89.22%

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 5 17 148562 787.01 750 732 187.8
A 3 79 102432 541.42 750 732 187.8
A 4 3 88367 466.54 750 732 187.8
B 5 172 1174374 7591.39 735 710 154.6
B 0 171 218013 1405.54 735 710 154.6
B 5 185 216672 1396.86 735 710 154.6
C 15 224 3695947 21490.32 620 614 172.0
C 9 38 2891930 16814.54 620 614 172.0
C 4 5 809958 4706.76 620 614 172.0
D 15 94 10873064 209591.0 167 159 51.9
D 6 42 5397970 104050.63 167 159 51.9
D 8 176 267107 5145.81 167 159 51.9

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