ASTROSAT CZTI

Data Quality Report

Orbit 25719

Creation date: 2024-06-27T19:20:45.236906
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/AS1A09_008T06_9000003748_25719cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25719cztM0_level2_quad_clean.evt
Size (bytes)525,752,64070,355,520
Size501.4 MB 67.1 MB
Events in quadrant A3,448,345430,171
Events in quadrant B3,570,906436,579
Events in quadrant C3,474,651415,802
Events in quadrant D4,995,522401,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145690
B0149080
C0145240
D0195700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6389711.111285%
B6388941.471509%
C63881171.831559%
D63892063.224292%

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 7589 6389 0 0 0.00% 0.00%
B 7588 6388 13 13 0.17% 0.20%
C 7588 6388 0 0 0.00% 0.00%
D 7589 6389 110 110 1.45% 1.72%

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 0 13 49932 279.27 882 866 175.7
A 13 254 10247 53.39 882 866 175.7
A 0 226 7504 37.78 882 866 175.7
B 5 172 52702 318.26 876 857 162.9
B 0 190 28507 169.73 876 857 162.9
B 0 219 26364 156.58 876 857 162.9
C 14 238 136058 689.16 848 856 196.2
C 3 233 25693 126.6 848 856 196.2
C 1 16 6792 30.26 848 856 196.2
D 1 52 992010 4775.18 856 832 207.6
D 2 244 418225 2010.87 856 832 207.6
D 8 195 204588 981.63 856 832 207.6

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