ASTROSAT CZTI

Data Quality Report

Orbit 40882

Creation date: 2024-06-27T22:21:43.329053
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_097T01_9000005574_40882cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40882cztM0_level2_quad_clean.evt
Size (bytes)341,472,96083,764,800
Size325.7 MB 79.9 MB
Events in quadrant A2,744,905566,379
Events in quadrant B3,310,196568,135
Events in quadrant C2,448,546558,709
Events in quadrant D3,752,838497,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111003
B0131302
C0102322
D0146062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4928170.344968%
B49282925.925325%
C4928300.608766%
D49281442.922078%

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 7050 4929 13 13 0.18% 0.26%
B 7050 4929 167 167 2.37% 3.39%
C 7050 4929 23 23 0.33% 0.47%
D 7050 4929 126 126 1.79% 2.56%

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 475561 4167.71 557 547 114.0
A 2 79 90800 791.87 557 547 114.0
A 13 248 9507 78.61 557 547 114.0
B 4 171 713348 6718.0 550 534 106.1
B 5 255 380318 3579.32 550 534 106.1
B 0 183 25808 238.2 550 534 106.1
C 15 214 207334 1615.4 545 550 128.0
C 0 10 106018 823.92 545 550 128.0
C 5 10 8413 61.43 545 550 128.0
D 12 79 967682 7410.61 531 516 130.5
D 13 249 300973 2302.16 531 516 130.5
D 1 47 172980 1321.45 531 516 130.5

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