ASTROSAT CZTI

Data Quality Report

Orbit 38363

Creation date: 2024-06-27T21:51:42.044779
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/AS1A10_094T24_9000005374_38363cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38363cztM0_level2_quad_clean.evt
Size (bytes)450,797,76084,617,280
Size429.9 MB 80.7 MB
Events in quadrant A2,758,471591,085
Events in quadrant B2,448,729607,294
Events in quadrant C2,463,113571,131
Events in quadrant D8,625,748439,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113283
B0106902
C0104922
D0290652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5040180.357143%
B5040240.476190%
C5040340.674603%
D5040111722.162698%

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 7012 5041 9 9 0.13% 0.18%
B 7012 5041 10 10 0.14% 0.20%
C 7012 5041 21 21 0.30% 0.42%
D 7012 5041 1468 1468 20.94% 29.12%

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 10 83 387037 3447.09 553 543 112.1
A 12 189 99160 879.55 553 543 112.1
A 9 143 51571 455.11 553 543 112.1
B 0 183 81865 777.16 556 542 104.6
B 4 21 33968 319.43 556 542 104.6
B 5 172 24899 232.77 556 542 104.6
C 15 214 213627 1683.86 542 545 126.5
C 1 23 65930 516.7 542 545 126.5
C 0 10 36139 281.28 542 545 126.5
D 10 203 5410373 43393.42 501 485 124.7
D 12 227 740963 5939.47 501 485 124.7
D 2 16 171793 1374.08 501 485 124.7

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