ASTROSAT CZTI

Data Quality Report

Orbit 09720

Creation date: 2024-06-27T15:49:45.188988
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/AS1A03_029T01_9000001384_09720cztM0_level2.evt modeM0/AS1A03_029T01_9000001384_09720cztM0_level2_quad_clean.evt
Size (bytes)1,180,255,680218,638,080
Size1.1 GB 208.5 MB
Events in quadrant A8,106,7331,367,027
Events in quadrant B8,437,8701,376,983
Events in quadrant C8,533,9621,355,518
Events in quadrant D9,467,8381,302,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373981220
B0380691317
C0388781214
D0420791498

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0201
D0201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037111
B037216
C03719
D037117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17722890.502201%
B176881150.650158%
C17724700.394945%
D176812761.560998%

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 20321 17939 4 4 0.02% 0.02%
B 20321 17944 4 4 0.02% 0.02%
C 20321 17937 32 32 0.16% 0.18%
D 20321 17921 139 139 0.68% 0.78%

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 39128 87.06 2087 2041 426.0
A 0 226 19499 40.98 2087 2041 426.0
A 1 162 18344 38.27 2087 2041 426.0
B 0 219 68098 165.38 2092 2043 399.4
B 0 214 63254 153.25 2092 2043 399.4
B 0 246 61074 147.79 2092 2043 399.4
C 9 68 454600 970.53 2012 2020 466.3
C 14 234 175877 372.83 2012 2020 466.3
C 8 128 19212 36.87 2012 2020 466.3
D 1 52 1427612 2827.21 1990 1936 504.3
D 12 233 149205 292.04 1990 1936 504.3
D 7 71 89459 173.56 1990 1936 504.3

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