ASTROSAT CZTI

Data Quality Report

Orbit 40257

Creation date: 2024-06-27T22:14:15.334726
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/AS1A12_022T01_9000005536_40257cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40257cztM0_level2_quad_clean.evt
Size (bytes)346,786,56095,641,920
Size330.7 MB 91.2 MB
Events in quadrant A2,980,116651,003
Events in quadrant B2,634,814672,652
Events in quadrant C2,669,115647,042
Events in quadrant D4,149,276562,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121063
B0111352
C0110082
D0158272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183440.848929%
B5183160.308702%
C5183120.231526%
D51833827.370249%

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 9158 5185 16 16 0.17% 0.31%
B 9158 5185 5 5 0.05% 0.10%
C 9158 5185 3 3 0.03% 0.06%
D 9158 5185 334 334 3.65% 6.44%

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 469572 3782.51 611 599 124.0
A 13 248 106260 852.21 611 599 124.0
A 6 10 15209 117.84 611 599 124.0
B 7 202 79197 675.42 612 596 116.4
B 0 245 66231 564.0 612 596 116.4
B 5 255 56817 483.11 612 596 116.4
C 15 214 225082 1594.38 609 613 140.8
C 9 54 27651 192.05 609 613 140.8
C 0 10 26247 182.08 609 613 140.8
D 12 227 1381653 9711.21 585 569 142.2
D 1 47 128057 896.44 585 569 142.2
D 13 249 112235 785.19 585 569 142.2

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