ASTROSAT CZTI

Data Quality Report

Orbit 39445

Creation date: 2024-06-27T22:04:39.037777
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_025T17_9000005476_39445cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39445cztM0_level2_quad_clean.evt
Size (bytes)296,933,76063,089,280
Size283.2 MB 60.2 MB
Events in quadrant A3,468,853401,454
Events in quadrant B2,290,256446,284
Events in quadrant C2,173,926438,382
Events in quadrant D2,772,650365,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125402
B090601
C087551
D0106701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366042311.557377%
B36601604.371585%
C3660180.491803%
D36603499.535519%

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 5603 3661 481 481 8.58% 13.14%
B 5603 3661 99 99 1.77% 2.70%
C 5603 3661 10 10 0.18% 0.27%
D 5603 3661 276 276 4.93% 7.54%

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 1576262 18267.87 419 412 86.3
A 10 83 252218 2919.03 419 412 86.3
A 12 189 10855 121.06 419 412 86.3
B 8 3 592296 7034.96 428 417 84.1
B 5 172 14839 171.42 428 417 84.1
B 12 111 10440 119.13 428 417 84.1
C 15 214 149248 1490.36 425 429 99.9
C 9 187 138013 1377.85 425 429 99.9
C 15 208 135407 1351.75 425 429 99.9
D 13 249 909850 9215.47 400 388 98.7
D 12 227 176024 1779.7 400 388 98.7
D 2 153 70578 711.23 400 388 98.7

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