ASTROSAT CZTI

Data Quality Report

Orbit 46281

Creation date: 2024-06-27T23:21:13.119270
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_072T01_9000006192_46281cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46281cztM0_level2_quad_clean.evt
Size (bytes)502,364,160111,173,760
Size479.1 MB 106.0 MB
Events in quadrant A6,034,029717,602
Events in quadrant B4,933,657751,866
Events in quadrant C3,022,308740,127
Events in quadrant D4,065,963671,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224043
B0194962
C0142482
D0169882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69611792.571470%
B69611592.284155%
C6961300.430973%
D6961931.336015%

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 7826 6962 3 3 0.04% 0.04%
B 7826 6962 30 30 0.38% 0.43%
C 7826 6962 3 3 0.04% 0.04%
D 7826 6962 68 68 0.87% 0.98%

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 3086576 19697.83 755 738 156.7
A 13 254 12448 74.75 755 738 156.7
A 3 137 8770 51.27 755 738 156.7
B 3 112 1738861 11651.71 755 731 149.2
B 0 199 80978 537.94 755 731 149.2
B 0 190 66679 442.09 755 731 149.2
C 2 14 35727 198.64 748 749 176.1
C 12 2 31261 173.28 748 749 176.1
C 4 254 16146 87.44 748 749 176.1
D 1 52 935724 5035.51 742 717 185.7
D 13 249 99209 530.43 742 717 185.7
D 2 249 93534 499.87 742 717 185.7

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