ASTROSAT CZTI

Data Quality Report

Orbit 15547

Creation date: 2024-06-27T17:10:09.734611
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/AS1G08_030T01_9000002302_15547cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15547cztM0_level2_quad_clean.evt
Size (bytes)530,426,88097,441,920
Size505.9 MB 92.9 MB
Events in quadrant A3,457,427642,820
Events in quadrant B3,846,065638,723
Events in quadrant C3,488,821604,503
Events in quadrant D4,817,149598,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141893
B0154412
C0143002
D0186032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67021682.506714%
B67022503.730230%
C67022113.148314%
D67025558.281110%

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 7778 6703 0 0 0.00% 0.00%
B 7778 6703 51 51 0.66% 0.76%
C 7778 6703 1 1 0.01% 0.01%
D 7778 6703 386 386 4.96% 5.76%

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 0 226 8098 40.19 897 880 179.6
A 9 143 7026 34.22 897 880 179.6
A 12 194 6625 31.99 897 880 179.6
B 3 64 337169 2002.29 878 857 168.0
B 0 214 30873 178.71 878 857 168.0
B 4 173 19724 112.33 878 857 168.0
C 14 238 131435 662.43 844 849 197.1
C 3 233 46763 232.91 844 849 197.1
C 10 187 7628 34.39 844 849 197.1
D 1 52 1013198 4986.93 844 823 203.0
D 5 222 512622 2521.11 844 823 203.0
D 13 104 35990 173.23 844 823 203.0

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