ASTROSAT CZTI

Data Quality Report

Orbit 35693

Creation date: 2022-05-10T14:28:36.586600
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_142T02_9000005112_35693cztM0_level2.evt modeM0/AS1A09_142T02_9000005112_35693cztM0_level2_quad_clean.evt
Size (bytes)166,155,84033,684,480
Size158.5 MB 32.1 MB
Events in quadrant A1,116,063220,589
Events in quadrant B1,341,841219,560
Events in quadrant C1,174,014216,768
Events in quadrant D1,252,339207,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046202
B052891
C047041
D050901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214340.186654%
B2143653.033131%
C2143271.259916%
D2143512.379841%

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 3875 2144 0 0 0.00% 0.00%
B 3875 2144 47 47 1.21% 2.19%
C 3875 2144 21 21 0.54% 0.98%
D 3875 2144 36 36 0.93% 1.68%

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 10 83 66972 1201.54 266 260 55.5
A 15 169 12241 215.79 266 260 55.5
A 13 6 7157 124.22 266 260 55.5
B 5 255 180880 3506.28 259 252 51.5
B 5 172 125657 2434.31 259 252 51.5
B 0 189 6651 124.21 259 252 51.5
C 15 214 90467 1492.25 255 256 60.5
C 0 10 86785 1431.35 255 256 60.5
C 1 241 1998 28.82 255 256 60.5
D 2 250 127158 2016.96 254 247 62.9
D 13 249 81112 1285.17 254 247 62.9
D 2 153 19699 309.15 254 247 62.9

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