ASTROSAT CZTI

Data Quality Report

Orbit 27322

Creation date: 2024-06-27T19:38:51.558178
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/AS1T03_255T01_9000003922_27322cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27322cztM0_level2_quad_clean.evt
Size (bytes)1,377,794,880228,778,560
Size1.3 GB 218.2 MB
Events in quadrant A9,501,8411,439,691
Events in quadrant B10,004,4321,449,107
Events in quadrant C9,487,8401,378,101
Events in quadrant D11,437,1061,341,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403240
B0412660
C0401270
D0466760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191711830.954567%
B191712481.293621%
C191722591.350928%
D191723521.836011%

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 21146 19175 48 48 0.23% 0.25%
B 21146 19175 50 50 0.24% 0.26%
C 21147 19176 16 16 0.08% 0.08%
D 21147 19176 188 188 0.89% 0.98%

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 14 235 185285 386.18 2363 2313 473.8
A 13 248 141706 294.2 2363 2313 473.8
A 15 174 43787 87.53 2363 2313 473.8
B 7 205 238078 530.24 2351 2294 444.7
B 3 64 212393 472.48 2351 2294 444.7
B 5 172 135041 298.53 2351 2294 444.7
C 14 238 355725 669.16 2246 2255 528.2
C 2 16 118293 219.67 2246 2255 528.2
C 0 207 99869 184.8 2246 2255 528.2
D 1 52 1458124 2589.59 2254 2205 562.2
D 2 250 474749 840.5 2254 2205 562.2
D 12 227 355998 629.28 2254 2205 562.2

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