ASTROSAT CZTI

Data Quality Report

Orbit 34492

Creation date: 2022-02-13T15:59:30.314510
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/AS1A05_118T04_9000004926_34492cztM0_level2.evt modeM0/AS1A05_118T04_9000004926_34492cztM0_level2_quad_clean.evt
Size (bytes)894,706,560109,215,360
Size853.3 MB 104.2 MB
Events in quadrant A5,189,188655,646
Events in quadrant B6,999,596660,463
Events in quadrant C5,529,351656,672
Events in quadrant D8,672,282610,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220155
B0275633
C0225343
D0329773

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10448230.220138%
B104487086.776417%
C10448490.468989%
D104485275.044028%

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 37066 10451 10 10 0.03% 0.10%
B 37066 10451 417 417 1.13% 3.99%
C 37066 10451 31 31 0.08% 0.30%
D 37066 10451 437 437 1.18% 4.18%

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 15 169 188820 744.54 1264 1241 251.9
A 10 83 55249 214.37 1264 1241 251.9
A 9 143 43819 169.0 1264 1241 251.9
B 5 172 1479668 6420.72 1214 1183 230.3
B 0 189 374932 1623.11 1214 1183 230.3
B 5 255 136894 589.36 1214 1183 230.3
C 15 214 441487 1579.83 1216 1225 278.7
C 0 10 183284 653.3 1216 1225 278.7
C 14 67 130710 464.64 1216 1225 278.7
D 8 195 2134433 7257.78 1201 1166 293.9
D 12 79 337008 1142.6 1201 1166 293.9
D 2 249 312275 1058.45 1201 1166 293.9

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