ASTROSAT CZTI

Data Quality Report

Orbit 01088

Creation date: 2024-06-27T14:07:18.273674
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_997T02_9000000212_01088cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01088cztM0_level2_quad_clean.evt
Size (bytes)1,051,424,64093,913,920
Size1002.7 MB 89.6 MB
Events in quadrant A7,276,072626,221
Events in quadrant B7,702,813616,120
Events in quadrant C7,534,840597,261
Events in quadrant D8,915,884569,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260643
B0273302
C0268132
D0309272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227130.208768%
B6227340.546009%
C6227200.321182%
D62273535.668861%

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 6887 6229 234 234 3.40% 3.76%
B 6887 6229 305 305 4.43% 4.90%
C 6887 6229 209 209 3.03% 3.36%
D 6886 6227 709 709 10.30% 11.39%

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 4 32 9044 15.76 1892 1906 452.8
A 11 79 7709 12.81 1892 1906 452.8
A 13 9 6194 9.47 1892 1906 452.8
B 5 191 87732 186.49 1954 1964 459.9
B 14 53 65047 137.17 1954 1964 459.9
B 5 249 51327 107.33 1954 1964 459.9
C 15 241 299080 587.51 1811 1878 505.9
C 9 202 69259 133.2 1811 1878 505.9
C 3 79 46282 87.78 1811 1878 505.9
D 12 22 1374764 2379.11 1797 1808 577.1
D 10 102 49331 82.35 1797 1808 577.1
D 7 207 47633 79.41 1797 1808 577.1

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