ASTROSAT CZTI

Data Quality Report

Orbit 40552

Creation date: 2024-06-27T22:17:30.373994
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_054T02_9000005550_40552cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40552cztM0_level2_quad_clean.evt
Size (bytes)364,366,08089,712,000
Size347.5 MB 85.6 MB
Events in quadrant A2,929,259622,771
Events in quadrant B3,041,496628,326
Events in quadrant C2,798,139599,131
Events in quadrant D4,276,494469,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122252
B0126891
C0120161
D0166371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566950.088199%
B5669120.211678%
C5669310.546834%
D5669110019.403775%

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 7042 5670 3 3 0.04% 0.05%
B 7042 5670 4 4 0.06% 0.07%
C 7042 5670 21 21 0.30% 0.37%
D 7041 5669 187 187 2.66% 3.30%

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 477011 3818.37 607 595 124.8
A 12 189 37481 295.63 607 595 124.8
A 3 1 34469 271.49 607 595 124.8
B 3 112 584741 5031.72 602 584 116.1
B 0 230 53281 453.91 602 584 116.1
B 15 85 18884 157.63 602 584 116.1
C 15 214 243218 1757.77 592 596 138.0
C 14 254 114205 823.09 592 596 138.0
C 10 20 100278 722.19 592 596 138.0
D 12 227 1003125 7445.89 541 527 134.7
D 2 250 429303 3184.34 541 527 134.7
D 12 191 210621 1560.28 541 527 134.7

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