ASTROSAT CZTI

Data Quality Report

Orbit 36519

Creation date: 2024-06-27T21:27:51.185206
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/AS1T05_035T01_9000005214_36519cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36519cztM0_level2_quad_clean.evt
Size (bytes)418,622,40055,143,360
Size399.2 MB 52.6 MB
Events in quadrant A2,893,482329,939
Events in quadrant B3,023,039328,941
Events in quadrant C2,956,532325,930
Events in quadrant D3,435,842304,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117983
B0122072
C0117572
D0137702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5436320.588668%
B5436801.471670%
C5436761.398087%
D54361081.986755%

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 7259 5437 20 20 0.28% 0.37%
B 7259 5437 42 42 0.58% 0.77%
C 7259 5437 42 42 0.58% 0.77%
D 7259 5437 71 71 0.98% 1.31%

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 197882 1485.0 666 654 132.8
A 9 143 100578 752.36 666 654 132.8
A 15 223 11180 79.25 666 654 132.8
B 5 172 251859 2001.24 661 645 125.5
B 5 255 84216 665.75 661 645 125.5
B 0 229 37152 290.83 661 645 125.5
C 15 214 232884 1573.6 639 643 147.6
C 0 10 222324 1502.05 639 643 147.6
C 12 249 8837 55.52 639 643 147.6
D 2 137 329313 2124.75 637 620 154.7
D 13 249 221671 1428.93 637 620 154.7
D 2 250 197416 1272.14 637 620 154.7

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