ASTROSAT CZTI

Data Quality Report

Orbit 28663

Creation date: 2024-06-27T19:54:38.504516
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/AS1A10_073T08_9000004112_28663cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28663cztM0_level2_quad_clean.evt
Size (bytes)520,663,680100,344,960
Size496.5 MB 95.7 MB
Events in quadrant A3,223,828681,223
Events in quadrant B3,892,635668,960
Events in quadrant C3,221,863639,774
Events in quadrant D5,008,094614,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132431
B0154461
C0133011
D0189201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62131021.641719%
B62142714.361120%
C62131802.897151%
D62134617.419926%

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 6978 6213 2 2 0.03% 0.03%
B 6979 6214 140 140 2.01% 2.25%
C 6978 6214 37 37 0.53% 0.60%
D 6978 6214 359 359 5.14% 5.78%

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 15 174 145604 899.64 798 784 161.0
A 13 254 12490 72.72 798 784 161.0
A 3 137 7516 41.82 798 784 161.0
B 10 245 699167 4732.24 779 761 147.6
B 5 172 102019 686.1 779 761 147.6
B 12 111 17657 114.48 779 761 147.6
C 2 16 143684 818.81 748 755 174.6
C 14 238 132109 752.5 748 755 174.6
C 14 254 16062 87.69 748 755 174.6
D 1 52 1787520 10013.98 748 729 178.4
D 8 195 276270 1544.26 748 729 178.4
D 2 250 39376 216.6 748 729 178.4

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