ASTROSAT CZTI

Data Quality Report

Orbit 37573

Creation date: 2024-06-27T21:41:43.065544
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/AS1T05_053T01_9000005338_37573cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37573cztM0_level2_quad_clean.evt
Size (bytes)719,343,360117,835,200
Size686.0 MB 112.4 MB
Events in quadrant A5,121,306748,086
Events in quadrant B6,267,034722,250
Events in quadrant C4,305,631764,644
Events in quadrant D5,494,427720,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203793
B0242272
C0182852
D0223972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8827840.951626%
B88276327.159850%
C8827290.328537%
D88271952.209131%

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 11814 8829 52 52 0.44% 0.59%
B 11814 8829 526 526 4.45% 5.96%
C 11814 8829 25 25 0.21% 0.28%
D 11814 8829 189 189 1.60% 2.14%

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 467439 2293.19 1000 980 203.4
A 15 222 446967 2192.55 1000 980 203.4
A 13 248 116083 565.87 1000 980 203.4
B 5 200 967783 5236.86 969 944 184.6
B 5 255 583335 3154.5 969 944 184.6
B 5 172 309212 1669.72 969 944 184.6
C 15 214 375277 1648.1 970 977 227.1
C 0 10 93647 408.04 970 977 227.1
C 15 159 18688 77.98 970 977 227.1
D 1 47 525557 2217.14 963 935 236.6
D 2 250 522939 2206.08 963 935 236.6
D 12 233 193190 812.5 963 935 236.6

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