ASTROSAT CZTI

Data Quality Report

Orbit 40788

Creation date: 2024-06-27T22:20:30.526266
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_095T02_9000005568_40788cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40788cztM0_level2_quad_clean.evt
Size (bytes)309,335,04088,905,600
Size295.0 MB 84.8 MB
Events in quadrant A2,953,789591,164
Events in quadrant B2,590,952607,688
Events in quadrant C2,637,742576,714
Events in quadrant D2,841,349533,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121942
B0113851
C0113711
D0124111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5473190.347159%
B5473140.255801%
C5473420.767404%
D5473721.315549%

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 7026 5474 15 15 0.21% 0.27%
B 7025 5472 2 2 0.03% 0.04%
C 7025 5472 37 37 0.53% 0.68%
D 7026 5473 61 61 0.87% 1.11%

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 492254 4047.42 591 578 121.5
A 13 248 81145 663.22 591 578 121.5
A 12 189 49329 401.31 591 578 121.5
B 0 230 86876 751.48 589 573 114.8
B 4 171 77212 667.33 589 573 114.8
B 5 255 36459 312.48 589 573 114.8
C 15 214 234895 1725.53 579 582 135.8
C 0 10 112226 822.17 579 582 135.8
C 3 233 17340 123.41 579 582 135.8
D 2 249 289668 2014.14 579 560 143.5
D 2 153 101000 699.74 579 560 143.5
D 5 222 65097 449.61 579 560 143.5

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