ASTROSAT CZTI

Data Quality Report

Orbit 41840

Creation date: 2024-06-27T22:33:28.848338
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_099T04_9000005708_41840cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41840cztM0_level2_quad_clean.evt
Size (bytes)357,062,40087,514,560
Size340.5 MB 83.5 MB
Events in quadrant A3,912,010578,591
Events in quadrant B2,347,772602,746
Events in quadrant C3,342,632561,127
Events in quadrant D3,199,498534,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150461
B0108361
C0133341
D0133021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53342725.099363%
B533490.168729%
C53341432.680915%
D5335881.649485%

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 7067 5335 201 201 2.84% 3.77%
B 7067 5335 4 4 0.06% 0.07%
C 7067 5335 154 154 2.18% 2.89%
D 7068 5336 86 86 1.22% 1.61%

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 14 24 1161022 9902.8 565 554 117.2
A 10 83 496269 4230.16 565 554 117.2
A 2 79 60542 511.9 565 554 117.2
B 0 183 46659 419.41 566 551 109.9
B 15 35 20816 184.34 566 551 109.9
B 0 186 19727 174.43 566 551 109.9
C 0 10 575269 4605.94 535 538 124.8
C 14 254 402986 3225.25 535 538 124.8
C 15 214 210327 1681.26 535 538 124.8
D 5 222 461978 3461.03 550 535 133.3
D 13 249 280917 2102.99 550 535 133.3
D 12 79 95057 708.96 550 535 133.3

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