ASTROSAT CZTI

Data Quality Report

Orbit 38639

Creation date: 2024-06-27T21:54:29.511309
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_061T03_9000005390_38639cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38639cztM0_level2_quad_clean.evt
Size (bytes)385,744,32088,182,720
Size367.9 MB 84.1 MB
Events in quadrant A3,192,035603,654
Events in quadrant B3,112,726603,015
Events in quadrant C2,779,178602,888
Events in quadrant D4,781,625488,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126853
B0125322
C0113452
D0176712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5311791.487479%
B53112093.935229%
C531170.131802%
D531172313.613256%

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 7014 5311 62 62 0.88% 1.17%
B 7014 5311 155 155 2.21% 2.92%
C 7014 5311 3 3 0.04% 0.06%
D 7014 5311 697 697 9.94% 13.12%

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 422825 3368.48 610 597 125.3
A 13 248 241932 1925.34 610 597 125.3
A 10 255 53907 425.3 610 597 125.3
B 4 171 544517 4702.86 598 580 115.7
B 0 155 100913 867.48 598 580 115.7
B 5 184 42324 360.92 598 580 115.7
C 15 214 214764 1517.44 599 601 141.1
C 14 254 98014 690.21 599 601 141.1
C 3 110 92910 654.05 599 601 141.1
D 2 249 1322465 9345.56 564 547 141.4
D 13 249 538989 3806.62 564 547 141.4
D 12 233 414312 2925.19 564 547 141.4

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