ASTROSAT CZTI

Data Quality Report

Orbit 39036

Creation date: 2024-06-27T21:59:12.611064
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_077T06_9000005426_39036cztM0_level2.fits modeM0/AS1A12_077T06_9000005426_39036cztM0_level2_quad_clean.evt
Size (bytes)402,572,16090,645,120
Size383.9 MB 86.4 MB
Events in quadrant A6,608,432547,650
Events in quadrant B2,578,356640,430
Events in quadrant C2,670,129605,896
Events in quadrant D2,611,729561,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236163
B0113702
C0113102
D0116012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556984815.227150%
B556970.125696%
C556950.089783%
D556990.161609%

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 7182 5570 755 755 10.51% 13.55%
B 7182 5570 1 1 0.01% 0.02%
C 7182 5570 0 0 0.00% 0.00%
D 7182 5570 5 5 0.07% 0.09%

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 15 222 3835971 31551.07 601 590 121.6
A 10 83 417414 3428.93 601 590 121.6
A 13 248 15489 122.56 601 590 121.6
B 5 184 88998 734.85 620 602 120.3
B 0 190 22531 182.3 620 602 120.3
B 0 230 16005 128.05 620 602 120.3
C 15 214 235878 1665.59 608 612 141.3
C 15 208 41248 287.69 608 612 141.3
C 9 54 7489 48.69 608 612 141.3
D 12 235 70253 466.06 610 590 149.5
D 2 249 67522 447.79 610 590 149.5
D 2 250 46463 306.9 610 590 149.5

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