ASTROSAT CZTI

Data Quality Report

Orbit 47258

Creation date: 2024-06-27T23:33:30.913444
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_005T01_9000006304_47258cztM0_level2.fits modeM0/AS1C09_005T01_9000006304_47258cztM0_level2_quad_clean.evt
Size (bytes)280,460,16069,508,800
Size267.5 MB 66.3 MB
Events in quadrant A4,258,976460,921
Events in quadrant B2,054,810477,686
Events in quadrant C1,752,256460,441
Events in quadrant D2,002,316422,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155000
B088350
C081230
D087720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4021701.740860%
B4021400.994777%
C402230.074590%
D402280.198906%

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 4021 4021 39 39 0.97% 0.97%
B 4021 4021 25 25 0.62% 0.62%
C 4022 4022 2 2 0.05% 0.05%
D 4022 4022 7 7 0.17% 0.17%

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 2072721 22843.82 437 428 90.7
A 9 191 484241 5333.29 437 428 90.7
A 13 254 6311 64.85 437 428 90.7
B 0 200 172177 2041.44 438 425 84.1
B 5 255 45788 539.18 438 425 84.1
B 5 172 43030 506.4 438 425 84.1
C 12 250 21402 201.75 442 444 103.9
C 1 3 4190 36.06 442 444 103.9
C 3 233 3570 30.09 442 444 103.9
D 1 47 168434 1533.04 439 426 109.6
D 12 1 117448 1067.8 439 426 109.6
D 2 234 16257 144.45 439 426 109.6

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