ASTROSAT CZTI

Data Quality Report

Orbit 25321

Creation date: 2024-06-27T19:16:21.169599
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_059T01_9000003706_25321cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25321cztM0_level2_quad_clean.evt
Size (bytes)764,596,800114,439,680
Size729.2 MB 109.1 MB
Events in quadrant A3,701,086771,429
Events in quadrant B3,887,238776,847
Events in quadrant C5,352,591709,274
Events in quadrant D9,691,281668,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162170
B0166900
C0208110
D0342260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7743791.020276%
B77441782.298554%
C77437719.957381%
D7743140718.171251%

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 8293 7747 0 0 0.00% 0.00%
B 8294 7748 29 29 0.35% 0.37%
C 8293 7747 549 549 6.62% 7.09%
D 8293 7747 994 994 11.99% 12.83%

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 13 254 12485 59.22 959 936 195.0
A 3 137 8992 41.31 959 936 195.0
A 0 226 8069 36.57 959 936 195.0
B 3 112 128661 698.64 952 925 182.8
B 12 111 22340 117.13 952 925 182.8
B 11 111 20020 104.44 952 925 182.8
C 9 54 1656781 7828.19 902 910 211.5
C 14 238 141472 664.51 902 910 211.5
C 3 233 15991 71.3 902 910 211.5
D 1 52 3423473 15930.78 889 862 214.8
D 8 195 2262894 10528.79 889 862 214.8
D 12 233 289695 1344.39 889 862 214.8

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