ASTROSAT CZTI

Data Quality Report

Orbit 38649

Creation date: 2024-06-27T21:54:36.338500
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_061T03_9000005390_38649cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38649cztM0_level2_quad_clean.evt
Size (bytes)331,231,68099,982,080
Size315.9 MB 95.4 MB
Events in quadrant A3,132,769675,580
Events in quadrant B2,688,612702,938
Events in quadrant C2,992,787664,138
Events in quadrant D3,030,164610,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125993
B0111792
C0118572
D0125082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5353360.672520%
B5353150.280217%
C53531001.868111%
D5353711.326359%

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 7356 5353 26 26 0.35% 0.49%
B 7356 5353 5 5 0.07% 0.09%
C 7356 5353 92 92 1.25% 1.72%
D 7356 5353 56 56 0.76% 1.05%

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 409380 3187.31 635 622 128.2
A 7 3 119536 927.24 635 622 128.2
A 9 143 82365 637.39 635 622 128.2
B 0 155 75010 618.79 640 623 120.2
B 4 171 45819 375.96 640 623 120.2
B 15 85 15383 122.78 640 623 120.2
C 14 254 255991 1735.78 631 636 147.1
C 15 214 215209 1458.56 631 636 147.1
C 3 110 24392 161.48 631 636 147.1
D 5 222 247339 1626.79 626 611 151.7
D 13 249 106304 696.88 626 611 151.7
D 2 249 97632 639.7 626 611 151.7

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