ASTROSAT CZTI

Data Quality Report

Orbit 36202

Creation date: 2022-06-09T10:16:30.370053
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/AS1T05_009T02_9000005172_36202cztM0_level2.evt modeM0/AS1T05_009T02_9000005172_36202cztM0_level2_quad_clean.evt
Size (bytes)231,497,28046,661,760
Size220.8 MB 44.5 MB
Events in quadrant A1,626,643303,980
Events in quadrant B1,553,691312,527
Events in quadrant C1,950,358303,333
Events in quadrant D1,691,217295,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066442
B063641
C074351
D069221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2756200.725689%
B2756331.197388%
C27561385.007257%
D2756582.104499%

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 4789 2757 9 9 0.19% 0.33%
B 4789 2757 18 18 0.38% 0.65%
C 4789 2757 123 123 2.57% 4.46%
D 4789 2757 52 52 1.09% 1.89%

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 15 223 232945 3455.08 331 325 67.3
A 10 83 88379 1307.86 331 325 67.3
A 9 143 11994 173.32 331 325 67.3
B 5 172 63890 996.15 331 322 63.8
B 5 255 63784 994.49 331 322 63.8
B 4 171 62900 980.64 331 322 63.8
C 4 254 453305 6085.42 318 321 74.4
C 15 214 122129 1636.38 318 321 74.4
C 0 10 61390 820.41 318 321 74.4
D 12 6 179929 2284.58 320 311 78.6
D 12 233 98706 1251.5 320 311 78.6
D 2 153 53226 673.03 320 311 78.6

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