ASTROSAT CZTI

Data Quality Report

Orbit 43516

Creation date: 2024-06-27T22:52:42.086635
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/AS1A12_018T01_9000005874_43516cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43516cztM0_level2_quad_clean.evt
Size (bytes)942,318,72058,680,000
Size898.7 MB 56.0 MB
Events in quadrant A11,240,460581,388
Events in quadrant B7,525,777667,631
Events in quadrant C13,297,642104,826
Events in quadrant D2,358,9534,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374340
B0264230
C0434880
D0109590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5878325655.392991%
B5879143224.357884%
C5879586899.812893%
D58795879100.000000%

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 7053 5879 2501 2501 35.46% 42.54%
B 7054 5880 1116 1116 15.82% 18.98%
C 7053 5878 4863 4863 68.95% 82.73%
D 7053 5878 24 24 0.34% 0.41%

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 0 228 3677815 32834.02 551 539 112.0
A 0 229 1697002 15147.54 551 539 112.0
A 14 235 1224474 10928.39 551 539 112.0
B 3 42 2342295 20101.44 620 603 116.5
B 3 25 1480963 12707.64 620 603 116.5
B 4 206 552341 4736.2 620 603 116.5
C 15 158 10366493 363973.54 115 115 28.5
C 15 191 821331 28833.69 115 115 28.5
C 3 233 217678 7638.85 115 115 28.5
D 4 201 285208 61654.73 4 4 4.6
D 4 124 270921 58566.2 4 4 4.6
D 4 215 249791 53998.37 4 4 4.6

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