ASTROSAT CZTI

Data Quality Report

Orbit 00668

Creation date: 2024-06-27T14:01:18.236314
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/AS1P01_141T01_9000000096_00668cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00668cztM0_level2_quad_clean.evt
Size (bytes)731,171,52041,909,760
Size697.3 MB 40.0 MB
Events in quadrant A5,492,232239,798
Events in quadrant B5,580,187242,729
Events in quadrant C4,898,660241,544
Events in quadrant D5,872,032226,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195341
B0198024
C0177741
D0206621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A451830.066401%
B4517330.730573%
C451720.044277%
D4517751.660394%

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 6674 4519 91 91 1.36% 2.01%
B 6673 4518 157 157 2.35% 3.47%
C 6673 4518 36 36 0.54% 0.80%
D 6673 4518 333 333 4.99% 7.37%

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 12 236 44206 139.21 1393 1381 307.6
A 14 79 16453 48.99 1393 1381 307.6
A 15 171 15258 45.11 1393 1381 307.6
B 7 221 168077 519.97 1356 1369 320.6
B 5 191 110856 341.5 1356 1369 320.6
B 4 172 41210 124.27 1356 1369 320.6
C 15 241 10667 26.73 1244 1291 350.8
C 10 38 3918 7.49 1244 1291 350.8
C -1 -1 -1 -1.0 1244 1291 350.8
D 12 237 637029 1646.0 1224 1271 386.2
D 13 221 191460 492.41 1224 1271 386.2
D 2 18 86080 219.57 1224 1271 386.2

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