ASTROSAT CZTI

Data Quality Report

Orbit 06854

Creation date: 2024-06-27T15:13:15.370744
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/AS1G06_164T01_9000000946_06854cztM0_level2.evt modeM0/AS1G06_164T01_9000000946_06854cztM0_level2_quad_clean.evt
Size (bytes)760,242,240154,425,600
Size725.0 MB 147.3 MB
Events in quadrant A5,226,657973,866
Events in quadrant B5,375,857986,967
Events in quadrant C5,275,173969,382
Events in quadrant D6,348,351932,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238797
B0241535
C02418012
D0267004

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117761060.900136%
B117771241.052900%
C11773670.569099%
D117771201.018935%

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 13068 11780 4 4 0.03% 0.03%
B 13068 11780 17 17 0.13% 0.14%
C 13068 11780 9 9 0.07% 0.08%
D 13068 11780 45 45 0.34% 0.38%

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 13 248 40470 143.17 1335 1305 273.6
A 13 251 37279 131.51 1335 1305 273.6
A 12 194 12593 41.26 1335 1305 273.6
B 0 228 72740 277.36 1344 1310 257.5
B 4 81 31434 116.97 1344 1310 257.5
B 12 111 26919 99.44 1344 1310 257.5
C 9 247 165774 550.81 1293 1295 298.6
C 1 3 38391 124.23 1293 1295 298.6
C 12 4 13423 40.61 1293 1295 298.6
D 8 195 624389 1979.77 1293 1253 314.8
D 2 152 383128 1213.25 1293 1253 314.8
D 14 34 176905 558.06 1293 1253 314.8

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