ASTROSAT CZTI

Data Quality Report

Orbit 46956

Creation date: 2024-06-27T23:29:55.154830
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/AS1A13_070T06_9000006288_46956cztM0_level2.fits modeM0/AS1A13_070T06_9000006288_46956cztM0_level2_quad_clean.evt
Size (bytes)305,936,64066,735,360
Size291.8 MB 63.6 MB
Events in quadrant A3,989,786428,454
Events in quadrant B3,101,358443,765
Events in quadrant C1,923,242447,596
Events in quadrant D1,989,000410,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145351
B0120151
C087201
D089821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41242415.843841%
B41242816.813773%
C4124581.406402%
D4124731.770126%

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 4714 4125 2 2 0.04% 0.05%
B 4714 4124 104 104 2.21% 2.52%
C 4714 4125 4 4 0.08% 0.10%
D 4714 4124 13 13 0.28% 0.32%

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 2136339 21381.92 474 464 99.9
A 14 248 9212 87.57 474 464 99.9
A 13 254 5990 55.32 474 464 99.9
B 3 112 1062877 11203.39 471 455 94.8
B 5 32 68206 714.44 471 455 94.8
B 0 190 39901 415.96 471 455 94.8
C 14 254 60138 527.99 477 479 113.0
C 12 250 3698 28.49 477 479 113.0
C 13 61 3173 23.84 477 479 113.0
D 1 232 41024 337.13 474 459 120.3
D 13 84 33662 275.95 474 459 120.3
D 13 249 27655 226.03 474 459 120.3

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