ASTROSAT CZTI

Data Quality Report

Orbit 43447

Creation date: 2024-06-27T22:52:05.980961
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_43447cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43447cztM0_level2_quad_clean.evt
Size (bytes)632,255,04069,174,720
Size603.0 MB 66.0 MB
Events in quadrant A10,082,556177,082
Events in quadrant B4,446,017542,636
Events in quadrant C2,373,901565,944
Events in quadrant D6,099,480445,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335295
B0166822
C0104842
D0218042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176370571.580371%
B517652710.181607%
C517670.135240%
D517696318.605100%

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 7269 5176 2798 2798 38.49% 54.06%
B 7269 5177 395 395 5.43% 7.63%
C 7269 5177 0 0 0.00% 0.00%
D 7269 5177 963 963 13.25% 18.60%

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 15 222 8294160 164768.09 239 235 50.3
A 15 237 557127 11063.28 239 235 50.3
A 10 83 293723 5830.47 239 235 50.3
B 0 190 2010466 19753.48 531 516 101.8
B 0 199 162275 1589.74 531 516 101.8
B 0 189 68575 668.87 531 516 101.8
C 15 214 216889 1724.01 537 540 125.5
C 3 233 57032 450.17 537 540 125.5
C 7 220 3837 26.27 537 540 125.5
D 1 52 3638079 30193.22 487 471 120.5
D 2 16 275061 2279.18 487 471 120.5
D 13 249 162748 1346.95 487 471 120.5

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