ASTROSAT CZTI

Data Quality Report

Orbit 51180

Creation date: 2025-03-15T16:27:25.197868
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/AS1C07_001T01_9000006454_51180cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51180cztM0_level2_quad_clean.evt
Size (bytes)776,652,480103,449,600
Size740.7 MB 98.7 MB
Events in quadrant A7,716,308644,548
Events in quadrant B5,834,396725,114
Events in quadrant C9,182,875614,623
Events in quadrant D5,426,692616,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283250
B0226190
C0326630
D0214990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76257339.613115%
B76255016.570492%
C7626112914.804616%
D76263955.179649%

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 7625 7625 524 524 6.87% 6.87%
B 7625 7625 378 378 4.96% 4.96%
C 7626 7626 1099 1099 14.41% 14.41%
D 7626 7625 367 367 4.81% 4.81%

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 12 3 1234148 6417.02 759 741 192.2
A 7 206 1110241 5772.38 759 741 192.2
A 9 160 561612 2918.03 759 741 192.2
B 5 172 667282 4108.61 761 736 162.2
B 10 60 543151 3343.47 761 736 162.2
B 8 128 336450 2069.35 761 736 162.2
C 4 12 2487002 12443.28 724 717 199.8
C 12 247 1551933 7763.48 724 717 199.8
C 4 13 941880 4710.3 724 717 199.8
D 3 12 493999 2378.79 734 706 207.4
D 12 2 413044 1988.4 734 706 207.4
D 8 176 384336 1849.96 734 706 207.4

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