ASTROSAT CZTI

Data Quality Report

Orbit 34425

Creation date: 2022-02-09T03:33:25.851740
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_108T02_9000004914_34425cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34425cztM0_level2_quad_clean.evt
Size (bytes)166,380,48037,615,680
Size158.7 MB 35.9 MB
Events in quadrant A933,060255,352
Events in quadrant B1,094,044258,116
Events in quadrant C1,076,886250,567
Events in quadrant D1,798,059230,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040951
B045471
C043951
D067391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198010.050505%
B1980472.373737%
C1980321.616162%
D1980824.141414%

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 4073 1981 0 0 0.00% 0.00%
B 4073 1981 29 29 0.71% 1.46%
C 4073 1981 21 21 0.52% 1.06%
D 4073 1981 99 99 2.43% 5.00%

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 17079 349.25 233 229 48.2
A 13 6 5746 114.35 233 229 48.2
A 13 254 3583 69.52 233 229 48.2
B 5 172 79163 1720.17 232 227 45.9
B 0 229 37067 802.81 232 227 45.9
B 0 190 35269 763.63 232 227 45.9
C 0 10 94468 1761.54 223 225 53.5
C 15 214 85250 1589.24 223 225 53.5
C 14 67 21353 394.91 223 225 53.5
D 8 195 315418 5786.5 217 212 54.5
D 7 80 244304 4481.0 217 212 54.5
D 2 249 84062 1539.3 217 212 54.5

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