ASTROSAT CZTI

Data Quality Report

Orbit 12423

Creation date: 2024-06-27T16:27:07.473502
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/AS1A04_085T02_9000001846_12423cztM0_level2.evt modeM0/AS1A04_085T02_9000001846_12423cztM0_level2_quad_clean.evt
Size (bytes)639,624,96088,499,520
Size610.0 MB 84.4 MB
Events in quadrant A5,470,929535,022
Events in quadrant B4,510,048540,201
Events in quadrant C3,960,232531,288
Events in quadrant D4,881,458510,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216314
B0185153
C0172673
D0200603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80784165.149790%
B80783444.258480%
C80781982.451102%
D80783864.778410%

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 8764 8080 124 124 1.41% 1.53%
B 8764 8081 77 77 0.88% 0.95%
C 8764 8080 14 14 0.16% 0.17%
D 8764 8081 149 149 1.70% 1.84%

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 13 251 1089261 5196.91 1000 975 209.4
A 1 162 125581 595.03 1000 975 209.4
A 8 15 114827 543.68 1000 975 209.4
B 4 239 350048 1795.02 997 973 194.5
B 3 64 118803 605.91 997 973 194.5
B 3 209 44552 224.09 997 973 194.5
C 15 208 137529 590.94 976 979 231.1
C 8 128 10322 40.43 976 979 231.1
C 13 61 7253 27.15 976 979 231.1
D 1 52 922021 3876.49 971 942 237.6
D 10 157 80595 335.23 971 942 237.6
D 13 104 48675 200.89 971 942 237.6

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