ASTROSAT CZTI

Data Quality Report

Orbit 35827

Creation date: 2022-05-19T14:58:03.233092
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/AS1A10_071T19_9000005144_35827cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35827cztM0_level2_quad_clean.evt
Size (bytes)471,191,04099,564,480
Size449.4 MB 95.0 MB
Events in quadrant A3,414,569677,989
Events in quadrant B3,492,578681,632
Events in quadrant C2,940,387667,652
Events in quadrant D4,076,841630,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134353
B0136492
C0116812
D0154872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50981933.785798%
B50981843.609259%
C5098731.431934%
D50982795.472734%

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 7221 5099 151 151 2.09% 2.96%
B 7220 5097 151 151 2.09% 2.96%
C 7220 5097 60 60 0.83% 1.18%
D 7220 5097 270 270 3.74% 5.30%

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 15 169 660383 4978.11 667 657 132.5
A 10 83 152895 1148.75 667 657 132.5
A 13 6 13943 100.25 667 657 132.5
B 5 172 377280 3034.47 654 641 124.1
B 5 255 330097 2654.33 654 641 124.1
B 4 232 80215 641.1 654 641 124.1
C 15 214 216312 1455.03 643 650 148.2
C 0 10 176423 1185.9 643 650 148.2
C 0 207 43201 287.08 643 650 148.2
D 2 250 437703 2774.56 645 628 157.5
D 14 52 353894 2242.54 645 628 157.5
D 13 249 243415 1541.22 645 628 157.5

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