ASTROSAT CZTI

Data Quality Report

Orbit 47282

Creation date: 2024-06-27T23:33:42.633080
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/AS1A13_025T01_9000006312_47282cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47282cztM0_level2_quad_clean.evt
Size (bytes)2,736,037,440410,777,280
Size2.5 GB 391.7 MB
Events in quadrant A31,180,5972,823,441
Events in quadrant B15,347,7352,958,789
Events in quadrant C12,399,2152,803,582
Events in quadrant D40,253,7621,974,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01119643
B0634393
C0565713
D01384529

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2726716345.992592%
B272677922.904610%
C272682991.096523%
D27267811429.757582%

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 38001 27271 365 365 0.96% 1.34%
B 38002 27271 189 189 0.50% 0.69%
C 38002 27272 32 32 0.08% 0.12%
D 38002 27272 7866 7866 20.70% 28.84%

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 15178827 23761.34 3084 3014 638.7
A 9 191 3409885 5334.27 3084 3014 638.7
A 15 235 497521 774.27 3084 3014 638.7
B 0 200 1286952 2095.81 3104 3001 612.6
B 5 32 330641 534.81 3104 3001 612.6
B 0 198 304235 491.71 3104 3001 612.6
C 14 254 268548 368.32 3057 3070 720.8
C 12 2 69918 92.74 3057 3070 720.8
C 3 233 66165 87.54 3057 3070 720.8
D 6 112 26276419 37570.97 2767 2679 699.3
D 12 233 868345 1237.89 2767 2679 699.3
D 12 2 654467 932.05 2767 2679 699.3

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