ASTROSAT CZTI

Data Quality Report

Orbit 51864

Creation date: 2025-04-30T19:09:40.979141
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/AS1C09_011T05_9000006466_51864cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51864cztM0_level2_quad_clean.evt
Size (bytes)804,237,12094,633,920
Size767.0 MB 90.2 MB
Events in quadrant A6,003,598630,368
Events in quadrant B6,362,180687,906
Events in quadrant C4,302,148647,816
Events in quadrant D12,536,017389,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228271
B0239330
C0180400
D0422910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73225557.579896%
B73226719.164163%
C73221011.379405%
D7323308942.182166%

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 7322 7322 444 444 6.06% 6.06%
B 7322 7322 533 533 7.28% 7.28%
C 7322 7322 106 106 1.45% 1.45%
D 7322 7322 3054 3054 41.71% 41.71%

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 0 250 1143700 6242.36 749 732 183.1
A 11 3 485333 2646.66 749 732 183.1
A 3 14 310353 1691.01 749 732 183.1
B 12 32 1151395 7289.42 741 715 157.9
B 10 44 1009417 6390.0 741 715 157.9
B 5 250 298886 1888.87 741 715 157.9
C 15 230 264923 1290.91 745 738 204.6
C 15 219 242919 1183.39 745 738 204.6
C 13 3 150768 733.1 745 738 204.6
D 11 129 5147304 29990.81 618 596 171.6
D 6 42 2432153 14169.13 618 596 171.6
D 8 209 598378 3483.38 618 596 171.6

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