ASTROSAT CZTI

Data Quality Report

Orbit 12236

Creation date: 2024-06-27T16:24:15.312386
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/AS1C03_014T03_9000001808_12236cztM0_level2.evt modeM0/AS1C03_014T03_9000001808_12236cztM0_level2_quad_clean.evt
Size (bytes)631,123,200123,641,280
Size601.9 MB 117.9 MB
Events in quadrant A4,786,590837,391
Events in quadrant B6,804,435772,327
Events in quadrant C3,213,743833,631
Events in quadrant D3,828,020806,394

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190542
B0251281
C0148261
D0165081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71011792.520772%
B7101104214.673990%
C7101450.633714%
D7101620.873116%

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 7437 7103 60 60 0.81% 0.84%
B 7437 7103 497 497 6.68% 7.00%
C 7437 7103 27 27 0.36% 0.38%
D 7437 7103 40 40 0.54% 0.56%

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 13 251 1224241 7402.24 795 777 165.3
A 1 162 128863 774.95 795 777 165.3
A 8 15 111947 672.6 795 777 165.3
B 4 206 1796960 12667.18 745 726 141.8
B 4 239 1486785 10479.8 745 726 141.8
B 3 64 250266 1759.78 745 726 141.8
C 15 208 165443 924.84 769 772 178.1
C 4 175 27862 152.15 769 772 178.1
C 0 207 7946 40.29 769 772 178.1
D 1 52 281700 1499.55 767 744 187.4
D 13 104 143755 763.29 767 744 187.4
D 5 222 134224 712.42 767 744 187.4

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