ASTROSAT CZTI

Data Quality Report

Orbit 39551

Creation date: 2024-06-27T22:06:01.768325
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_9000005488_39551cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39551cztM0_level2_quad_clean.evt
Size (bytes)465,816,96083,154,240
Size444.2 MB 79.3 MB
Events in quadrant A3,070,322589,472
Events in quadrant B2,286,934609,953
Events in quadrant C5,668,039498,936
Events in quadrant D5,797,732441,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126613
B0109542
C0205812
D0212222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5402220.407257%
B5402150.277675%
C540289416.549426%
D5402113320.973713%

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 7255 5403 14 14 0.19% 0.26%
B 7255 5403 3 3 0.04% 0.06%
C 7255 5403 943 943 13.00% 17.45%
D 7255 5403 878 878 12.10% 16.25%

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 430186 3761.0 561 550 114.2
A 15 222 396859 3469.26 561 550 114.2
A 10 255 42406 366.4 561 550 114.2
B 5 255 60309 552.12 559 543 108.2
B 12 111 13666 121.23 559 543 108.2
B 11 111 12469 110.17 559 543 108.2
C 9 187 3342897 27504.12 524 529 121.5
C 15 214 219119 1798.76 524 529 121.5
C 15 208 44259 359.85 524 529 121.5
D 7 38 2045306 16893.1 494 479 121.0
D 12 227 864229 7135.77 494 479 121.0
D 12 0 356432 2940.66 494 479 121.0

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