ASTROSAT CZTI

Data Quality Report

Orbit 17958

Creation date: 2024-06-27T17:43:08.562659
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/AS1A05_019T01_9000002672_17958cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17958cztM0_level2_quad_clean.evt
Size (bytes)510,203,52091,742,400
Size486.6 MB 87.5 MB
Events in quadrant A3,223,762594,715
Events in quadrant B3,346,021598,559
Events in quadrant C3,663,010570,656
Events in quadrant D4,769,244552,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138472
B0140442
C0149262
D0184582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621650.981725%
B6621771.162966%
C66211131.706691%
D66213485.256004%

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 7646 6622 4 4 0.05% 0.06%
B 7646 6622 6 6 0.08% 0.09%
C 7646 6622 8 8 0.10% 0.12%
D 7646 6621 246 246 3.22% 3.72%

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 4 2 18483 104.9 828 809 168.5
A 15 174 17289 97.81 828 809 168.5
A 0 226 7319 38.64 828 809 168.5
B 7 220 69048 435.94 820 802 156.5
B 0 197 33629 209.69 820 802 156.5
B 12 111 18759 114.71 820 802 156.5
C 3 233 455817 2458.06 783 788 185.1
C 14 238 119494 641.25 783 788 185.1
C 9 160 20586 106.95 783 788 185.1
D 5 222 977858 5102.88 787 763 191.5
D 12 110 533791 2783.74 787 763 191.5
D 13 170 127722 663.04 787 763 191.5

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