ASTROSAT CZTI

Data Quality Report

Orbit 40716

Creation date: 2024-06-27T22:19:31.105913
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_029T02_9000005558_40716cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40716cztM0_level2_quad_clean.evt
Size (bytes)434,036,16087,275,520
Size413.9 MB 83.2 MB
Events in quadrant A2,998,862620,344
Events in quadrant B2,599,250636,799
Events in quadrant C6,362,346544,146
Events in quadrant D3,669,840448,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124713
B0115792
C0226342
D0149402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5600190.339286%
B5600210.375000%
C560081414.535714%
D5600126622.607143%

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 7212 5601 4 4 0.06% 0.07%
B 7212 5601 5 5 0.07% 0.09%
C 7212 5601 838 838 11.62% 14.96%
D 7212 5601 147 147 2.04% 2.62%

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 513794 3990.92 625 611 128.6
A 12 189 40940 313.63 625 611 128.6
A 7 3 16435 123.06 625 611 128.6
B 0 190 70419 574.21 625 607 121.6
B 0 230 22958 183.84 625 607 121.6
B 4 170 20101 160.34 625 607 121.6
C 9 187 3709512 27013.36 585 588 137.3
C 15 214 232474 1688.91 585 588 137.3
C 14 254 126931 920.2 585 588 137.3
D 2 249 663829 4936.47 538 524 134.4
D 1 52 349335 2595.93 538 524 134.4
D 12 191 223914 1662.52 538 524 134.4

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